Admin: 1 версия

2010-06-01T06:33:53Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:44Z

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== Demo Prepared Statement Set Ascii Stream ==



<source lang="java">
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class DemoPreparedStatementSetAsciiStream {
public static Connection getConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:databaseName";
String username = "name";
String password = "password";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args) {
Connection conn = null;
PreparedStatement pstmt = null;
String query = null;
try {
conn = getConnection();
String fileName = "fileName.txt";
File file = new File(fileName);
int fileLength = (int) file.length();
InputStream stream = (InputStream) new FileInputStream(file);
query = "insert into LONG_VARCHAR_TABLE(id, stream) values(?, ?)";
pstmt = conn.prepareStatement(query);
pstmt.setString(1, fileName);
pstmt.setAsciiStream(2, stream, fileLength);
int rowCount = pstmt.executeUpdate();
System.out.println("rowCount=" + rowCount);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
pstmt.close();
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

</source>



== Demo Prepared Statement Set BinaryStream ==



<source lang="java">
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class DemoPreparedStatementSetBinaryStream {
public static Connection getConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:databaseName";
String username = "name";
String password = "password";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args)throws Exception {
String smallFileName = "smallFileName.dat";
String largeFileName = "largeFileName.dat";
Connection conn = null;
PreparedStatement pstmt = null;
try {
conn = getConnection();
File smallFile = new File(smallFileName);
int smallFileLength = (int) smallFile.length();
InputStream smallStream = (InputStream) new FileInputStream(smallFile);
File largeFile = new File(largeFileName);
int largeFileLength = (int) largeFile.length();
InputStream largeStream = (InputStream) new FileInputStream(largeFile);
String query = "insert into binary_table(id, raw_column, long_raw_column) values(?, ?, ?)";
conn.setAutoCommit(false);
pstmt = conn.prepareStatement(query);
pstmt.setString(1, "0001");
pstmt.setBinaryStream(2, smallStream, smallFileLength);
pstmt.setBinaryStream(3, largeStream, largeFileLength);
// execute query, and return number of rows created
int rowCount = pstmt.executeUpdate();
System.out.println("rowCount=" + rowCount);
conn.rumit();
} finally {
pstmt.close();
conn.close();
}
}
}

</source>



== Demo PreparedStatement Set Character Stream ==



<source lang="java">
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class DemoPreparedStatementSetCharacterStream {
public static Connection getConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/databaseName";
String username = "root";
String password = "root";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args)throws Exception {
String fileName = "charDataFile.txt";
Reader fileReader = null;
long fileLength = 0;
Connection conn = null;
PreparedStatement pstmt = null;
try {
File file = new File(fileName);
fileLength = file.length();
fileReader = (Reader) new BufferedReader(new FileReader(file));
System.out.println("fileName=" + fileName);
System.out.println("fileLength=" + fileLength);
conn = getConnection();
// begin transaction
conn.setAutoCommit(false);
// prepare SQL query for inserting a new row using SetCharacterStream()
String query = "insert into char_stream_table (id, char_stream_column) values(?, ?)";
// create PrepareStatement object
pstmt = conn.prepareStatement(query);
pstmt.setString(1, fileName);
pstmt.setCharacterStream(2, fileReader, (int) fileLength);
// execute query, and return number of rows created
int rowCount = pstmt.executeUpdate();
System.out.println("rowCount=" + rowCount);
// end transaction
conn.rumit();
} finally {
pstmt.close();
conn.close();
}
}
}

</source>



== Insert Text File To Oracle ==



<source lang="java">
import java.io.File;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
public class InsertTextFileToOracle {
public static Connection getConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:oracle";
String username = "username";
String password = "password";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static void main(String[] args)throws Exception {
String id = "001";
String fileName = "fileName.txt";

FileInputStream fis = null;
PreparedStatement pstmt = null;
Connection conn = null;
try {
conn = getConnection();
conn.setAutoCommit(false);
File file = new File(fileName);
fis = new FileInputStream(file);
pstmt = conn.prepareStatement("insert into DataFiles(id, fileName, fileBody) values (?, ?, ?)");
pstmt.setString(1, id);
pstmt.setString(2, fileName);
pstmt.setAsciiStream(3, fis, (int) file.length());
pstmt.executeUpdate();
conn.rumit();
} catch (Exception e) {
System.err.println("Error: " + e.getMessage());
e.printStackTrace();
} finally {
pstmt.close();
fis.close();
conn.close();
}
}
}

</source>

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Admin: 1 версия

в 18:01, 31 мая 2010