Java/Spring/JdbcTemplate
Содержание
- 1 Control Parameter Type In JdbcTemplate.Query
- 2 Deal With TimeStamp
- 3 Execute Delete Statement
- 4 Execute Update and Delete Statements With JdbcTemplate
- 5 Number Of Row Affected
- 6 Pass DataSource to se JdbcTemplate
- 7 Pass Object Array To Query Method In JdbcTemplate
- 8 Pass Parameter As Object Array
- 9 Query For List
- 10 Query For List, Returns List Of Linked HashMap
- 11 Query For Map
- 12 Query For Object, Return String
- 13 Query For Rowset
- 14 UpdateStatement With Two Parameters
- 15 Use batchUpdate from JdbcTemplate To Execute Two UpdateStatements
- 16 Use JdbcTemplate To Create Table
- 17 Use JdbcTemplate To Execute Aggregate Function: queryForLong
- 18 Use JdbcTemplate To Execute Delete Statement With Parameter
- 19 Use queryForInt To Execute Aggregate Function
Control Parameter Type In JdbcTemplate.Query
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
System.out.println(jdbcTemplate.query("select first_name from t_customer where id=?",
new Object[] { 1L },
new int[] { Types.INTEGER },
new FirstColumnStringRowMapper()));
}
}
class FirstColumnStringRowMapper implements RowMapper {
public Object mapRow(ResultSet resultSet, int i) throws SQLException {
return resultSet.getString(1);
}
}
Deal With TimeStamp
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
jdbcTemplate.query("select first_name from t_customer where last_login < ?",
new Object[] { new java.util.Date() },
new int[] { Types.TIMESTAMP },
new StringExtractingRowCallbackHandler());
}
}
class StringExtractingRowCallbackHandler implements RowCallbackHandler {
public void processRow(ResultSet resultSet) throws SQLException {
while (resultSet.next()) {
System.out.println(resultSet.getString(1));
}
}
}
Execute Delete Statement
File: context.xml
File: Main.java
import java.util.List;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("password");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("password");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
jt.execute("delete from employee");
Object[] parameters = new Object[] {new Integer(1)};
List l = jt.queryForList("select id, name from employee where id > ?",
parameters);
System.out.println(l.size());
ds.destroy();
}
}
Execute Update and Delete Statements With JdbcTemplate
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName">
<value>sun.jdbc.odbc.JdbcOdbcDriver</value>
</property>
<property name="url">
<value>jdbc:odbc:test</value>
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value>sql</value>
</property>
</bean>
<bean id="datacon" class="Dataconimpl">
<property name="dataSource"><ref local="dataSource"/></property>
</bean>
</beans>
File: Main.java
import javax.sql.DataSource;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.jdbc.core.JdbcTemplate;
public class Main {
public static void main(String[] args) throws Exception {
BeanFactory factory = new XmlBeanFactory(new ClassPathResource("context.xml"));
Dataconimpl bean1 = (Dataconimpl) factory.getBean("datacon");
JdbcTemplate jt = new JdbcTemplate(bean1.dbcon());
jt.execute("delete from table1 ");
jt.execute("update table1 set table1.place="" ");
}
}
class Dataconimpl implements Datacon {
private DataSource dataSource;
public void setDataSource(DataSource ds) {
dataSource = ds;
}
public DataSource dbcon() {
return dataSource;
}
}
interface Datacon {
public DataSource dbcon();
}
Number Of Row Affected
File: Main.java
import java.util.List;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("password");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("password");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
int x = jt.update("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
System.out.println(x);
Object[] parameters = new Object[] {new Integer(1)};
List l = jt.queryForList("select id, name from employee where id > ?",
parameters);
System.out.println(l.size());
ds.destroy();
}
}
Pass DataSource to se JdbcTemplate
File: Main.java
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
int count = jt.queryForInt("select count(*) from employee");
System.out.println(count);
ds.destroy();
}
}
Pass Object Array To Query Method In JdbcTemplate
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
jdbcTemplate.query("select first_name from t_customer where id=?",
new Object[] { 1L },
new StringExtractingRowCallbackHandler());
}
}
class StringExtractingRowCallbackHandler implements RowCallbackHandler {
public void processRow(ResultSet resultSet) throws SQLException {
while (resultSet.next()) {
System.out.println(resultSet.getString(1));
}
}
}
Pass Parameter As Object Array
File: context.xml
File: Main.java
import java.util.List;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
Object[] parameters = new Object[] {new Integer(1)};
List l = jt.queryForList("select id, name from employee where id > ?",
parameters);
System.out.println(l.size());
System.out.println(l.get(0));
System.out.println(l.get(0).getClass());
ds.destroy();
}
}
Query For List
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
System.out.println(jdbcTemplate.queryForList("select id from t_customer", Long.class));
}
}
Query For List, Returns List Of Linked HashMap
File: context.xml
File: Main.java
import java.util.List;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
Object[] parameters = new Object[] {new Integer(1)};
List l = jt.queryForList("select id, name from employee where id > ?",
parameters);
System.out.println(l.size());
System.out.println(l.get(0));
System.out.println(l.get(0).getClass());
ds.destroy();
}
}
Query For Map
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
System.out.println(jdbcTemplate.queryForMap("select * from customer"));
}
}
Query For Object, Return String
File: Main.java
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
Object[] parameters = new Object[] {new Integer(2)};
Object o = jt.queryForObject("select name from employee where id = ?",
parameters, String.class);
System.out.println((String)o);
ds.destroy();
}
}
Query For Rowset
File: Main.java
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
import org.springframework.jdbc.support.rowset.SqlRowSet;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
int x = jt.update("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
Object[] parameters = new Object[] { new Integer(1) };
SqlRowSet srs = jt.queryForRowSet("select id, name from employee where id > ?", parameters);
int rowCount = 0;
while (srs.next()) {
System.out.println(srs.getString("id") + " - " + srs.getString("name"));
rowCount++;
}
System.out.println(rowCount);
ds.destroy();
}
}
UpdateStatement With Two Parameters
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
jdbcTemplate.update("update customer set first_name=? where id=?",
new Object[] { "A", 1L }, new int[] { Types.VARCHAR, Types.INTEGER });
}
}
Use batchUpdate from JdbcTemplate To Execute Two UpdateStatements
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:lang="http://www.springframework.org/schema/lang"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd">
<!--
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<!--
<bean id="mysqlDataSource" class="org.apache.rumons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
-->
<bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">
<property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>
</bean>
<bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.rumonsDbcpNativeJdbcExtractor"/>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: Main.java
import java.sql.Types;
import javax.sql.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);
DataSource dataSource = (DataSource) ac.getBean("dataSource");
// DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
jdbcTemplate.batchUpdate(new String[] { "update customer set first_name = "FN#"",
"delete from customer where id > 2" });
}
}
Use JdbcTemplate To Create Table
File: context.xml
File: Main.java
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
int count = jt.queryForInt("select count(*) from employee");
System.out.println(count);
ds.destroy();
}
}
Use JdbcTemplate To Execute Aggregate Function: queryForLong
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<bean id="employeeDao" class="EmployeeDaoImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: EmployeeDaoImpl.java
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.sql.DataSource;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.BatchPreparedStatementSetter;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.SqlOutParameter;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.core.simple.ParameterizedRowMapper;
import org.springframework.jdbc.core.simple.SimpleJdbcTemplate;
import org.springframework.jdbc.core.support.AbstractLobCreatingPreparedStatementCallback;
import org.springframework.jdbc.core.support.AbstractLobStreamingResultSetExtractor;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import org.springframework.jdbc.object.MappingSqlQuery;
import org.springframework.jdbc.object.SqlUpdate;
import org.springframework.jdbc.object.StoredProcedure;
import org.springframework.jdbc.support.lob.DefaultLobHandler;
import org.springframework.jdbc.support.lob.LobCreator;
import org.springframework.jdbc.support.lob.LobHandler;
import org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor;
import org.springframework.util.FileCopyUtils;
//import org.apache.rumons.dbcp.BasicDataSource;
public class EmployeeDaoImpl extends JdbcDaoSupport{
protected void initDao() throws Exception {
super.initDao();
getJdbcTemplate().setNativeJdbcExtractor(new SimpleNativeJdbcExtractor());
}
public int getTotalNumberOfEmployees() {
return getJdbcTemplate().queryForInt("SELECT COUNT(0) FROM employees");
}
public long getTotalAge() {
return getJdbcTemplate().queryForLong("SELECT SUM(age) FROM employee");
}
public long getAverageAge() {
return getJdbcTemplate().queryForLong("SELECT AVG(age) FROM employee");
}
public long getOldestAge() {
return getJdbcTemplate().queryForLong("SELECT MAX(age) FROM employee");
}
public long getYoungestAge() {
return getJdbcTemplate().queryForLong("SELECT MIN(age) FROM employee");
}
}
class Employee {
private Integer id;
private Name name = new Name();
private Integer age;
private Sex sex;
private Address address = new Address();
private List<PhoneNumber> phoneNumbers = new ArrayList<PhoneNumber>();
public Employee() {
}
public Employee(String firstName, String lastName) {
this.getName().setFirst(firstName);
this.getName().setLast(lastName);
}
void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public Address getAddress() {
return address;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Name getName() {
return name;
}
public List<PhoneNumber> getPhoneNumbers() {
return Collections.unmodifiableList(phoneNumbers);
}
public void addPhoneNumber(PhoneNumber phoneNumber) {
this.phoneNumbers.add(phoneNumber);
}
public void removePhoneNumber(PhoneNumber phoneNumber) {
this.phoneNumbers.remove(phoneNumber);
}
public void removePhoneNumber(int index) {
this.phoneNumbers.remove(index);
}
public Sex getSex() {
return sex;
}
public void setSex(Sex sex) {
this.sex = sex;
}
}
abstract class Sex {
public static final Sex MALE = new Male();
public static final Sex FEMALE = new Female();
public boolean equals(Object o) {
if (o == null) {
return false;
}
return getClass().equals(o.getClass());
}
}
class PhoneNumber {
}
class Address {
private String line1;
private String line2;
private String city;
private String state;
private String zip;
public void setLine1(String line1) {
this.line1 = line1;
}
public String getLine1() {
return this.line1;
}
public void setLine2(String line2) {
this.line2 = line2;
}
public String getLine2() {
return this.line2;
}
public void setCity(String city) {
this.city = city;
}
public String getCity() {
return this.city;
}
public void setState(String state) {
this.state = state;
}
public String getState() {
return this.state;
}
public void setZip(String zip) {
this.zip = zip;
}
public String getZip() {
return this.zip;
}
}
final class Male extends Sex {
protected Male() {
}
}
final class Female extends Sex {
protected Female() {
}
}
class Name {
private String first;
private String middle;
private String last;
public void setFirst(String first) {
this.first = first;
}
public String getFirst() {
return this.first;
}
public void setMiddle(String middle) {
this.middle = middle;
}
public String getMiddle() {
return this.middle;
}
public void setLast(String last) {
this.last = last;
}
public String getLast() {
return this.last;
}
}
File: Main.java
import java.util.Date;
import java.util.GregorianCalendar;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext(
"context.xml");
EmployeeDaoImpl ws = (EmployeeDaoImpl) ctx.getBean("employeeDao");
}
}
Use JdbcTemplate To Execute Delete Statement With Parameter
File: context.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="dataSource" class="org.apache.rumons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem:."/>
<property name="username" value="sa"/>
<property name="password" value=""/>
</bean>
<bean id="employeeDao" class="EmployeeDaoImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
File: EmployeeDaoImpl.java
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.sql.DataSource;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.BatchPreparedStatementSetter;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.SqlOutParameter;
import org.springframework.jdbc.core.SqlParameter;
import org.springframework.jdbc.core.simple.ParameterizedRowMapper;
import org.springframework.jdbc.core.simple.SimpleJdbcTemplate;
import org.springframework.jdbc.core.support.AbstractLobCreatingPreparedStatementCallback;
import org.springframework.jdbc.core.support.AbstractLobStreamingResultSetExtractor;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import org.springframework.jdbc.object.MappingSqlQuery;
import org.springframework.jdbc.object.SqlUpdate;
import org.springframework.jdbc.object.StoredProcedure;
import org.springframework.jdbc.support.lob.DefaultLobHandler;
import org.springframework.jdbc.support.lob.LobCreator;
import org.springframework.jdbc.support.lob.LobHandler;
import org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor;
import org.springframework.util.FileCopyUtils;
//import org.apache.rumons.dbcp.BasicDataSource;
public class EmployeeDaoImpl extends JdbcDaoSupport{
protected void initDao() throws Exception {
super.initDao();
getJdbcTemplate().setNativeJdbcExtractor(new SimpleNativeJdbcExtractor());
}
public void delete(Employee employee) {
getJdbcTemplate().update("DELETE FROM employee WHERE id = ?", new Object[] { employee.getId() });
}
}
class Employee {
private Integer id;
private Name name = new Name();
private Integer age;
private Sex sex;
private Address address = new Address();
private List<PhoneNumber> phoneNumbers = new ArrayList<PhoneNumber>();
public Employee() {
}
public Employee(String firstName, String lastName) {
this.getName().setFirst(firstName);
this.getName().setLast(lastName);
}
void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public Address getAddress() {
return address;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Name getName() {
return name;
}
public List<PhoneNumber> getPhoneNumbers() {
return Collections.unmodifiableList(phoneNumbers);
}
public void addPhoneNumber(PhoneNumber phoneNumber) {
this.phoneNumbers.add(phoneNumber);
}
public void removePhoneNumber(PhoneNumber phoneNumber) {
this.phoneNumbers.remove(phoneNumber);
}
public void removePhoneNumber(int index) {
this.phoneNumbers.remove(index);
}
public Sex getSex() {
return sex;
}
public void setSex(Sex sex) {
this.sex = sex;
}
}
abstract class Sex {
public static final Sex MALE = new Male();
public static final Sex FEMALE = new Female();
public boolean equals(Object o) {
if (o == null) {
return false;
}
return getClass().equals(o.getClass());
}
}
class PhoneNumber {
}
class Address {
private String line1;
private String line2;
private String city;
private String state;
private String zip;
public void setLine1(String line1) {
this.line1 = line1;
}
public String getLine1() {
return this.line1;
}
public void setLine2(String line2) {
this.line2 = line2;
}
public String getLine2() {
return this.line2;
}
public void setCity(String city) {
this.city = city;
}
public String getCity() {
return this.city;
}
public void setState(String state) {
this.state = state;
}
public String getState() {
return this.state;
}
public void setZip(String zip) {
this.zip = zip;
}
public String getZip() {
return this.zip;
}
}
final class Male extends Sex {
protected Male() {
}
}
final class Female extends Sex {
protected Female() {
}
}
class Name {
private String first;
private String middle;
private String last;
public void setFirst(String first) {
this.first = first;
}
public String getFirst() {
return this.first;
}
public void setMiddle(String middle) {
this.middle = middle;
}
public String getMiddle() {
return this.middle;
}
public void setLast(String last) {
this.last = last;
}
public String getLast() {
return this.last;
}
}
File: Main.java
import java.util.Date;
import java.util.GregorianCalendar;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
class Main {
public static void main(String args[]) throws Exception {
ApplicationContext ctx = new ClassPathXmlApplicationContext(
"context.xml");
EmployeeDaoImpl ws = (EmployeeDaoImpl) ctx.getBean("employeeDao");
}
}
Use queryForInt To Execute Aggregate Function
File: context.xml
File: Main.java
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.SingleConnectionDataSource;
public class Main {
public static void main(String args[]) throws Exception {
SingleConnectionDataSource ds = new SingleConnectionDataSource();
ds.setDriverClassName("org.hsqldb.jdbcDriver");
ds.setUrl("jdbc:hsqldb:data/tutorial");
ds.setUsername("sa");
ds.setPassword("");
//
// ds.setDriverClassName("com.mysql.jdbc.Driver");
// ds.setUrl("jdbc:mysql://localhost:3306/spring");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
//
// ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
// ds.setUrl("jdbc:oracle:thin:@fiji:1521:my10g");
// ds.setUsername("spring");
// ds.setPassword("t1cket");
JdbcTemplate jt = new JdbcTemplate(ds);
jt.execute("create table employee (id int, name varchar)");
jt.execute("insert into employee (id, name) values (1, "A")");
jt.execute("insert into employee (id, name) values (2, "B")");
jt.execute("insert into employee (id, name) values (3, "C")");
jt.execute("insert into employee (id, name) values (4, "D")");
jt.execute("insert into employee (id, name) values (5, "E")");
jt.execute("insert into employee (id, name) values (6, "F")");
Object[] parameters = new Object[] {"M"};
int count = jt.queryForInt("select count(*) from employee where name > ?",
parameters);
System.out.println(count);
ds.destroy();
}
}