Admin: 1 версия

2010-06-01T05:00:04Z

1 версия

в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== Load text file from a URL ==



<source lang="java">
/* License
*
* Copyright 1994-2004 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
* INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/
import java.io.IOException;
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.TextBox;
import javax.microedition.midlet.MIDlet;
public class J2MEFirstExample extends MIDlet {
private Display display;
String url = "http://www.y.ru/hello.txt";
public J2MEFirstExample() {
display = Display.getDisplay(this);
}
/**
* This will be invoked when we start the MIDlet
*/
public void startApp() {
try {
getViaStreamConnection(url);
} catch (IOException e) {
e.printStackTrace();
}
}
public void pauseApp() {
}
/**
* Destroy must cleanup everything.
*/
public void destroyApp(boolean unconditional) {
}
/**
* read url via stream connection
*/
void getViaStreamConnection(String url) throws IOException {
StreamConnection c = null;
InputStream s = null;
StringBuffer b = new StringBuffer();
TextBox t = null;
try {
c = (StreamConnection) Connector.open(url);
s = c.openInputStream();
int ch;
while ((ch = s.read()) != -1) {
b.append((char) ch);
}
System.out.println(b.toString());
t = new TextBox("hello....", b.toString(), 1024, 0);
} finally {
if (s != null) {
s.close();
}
if (c != null) {
c.close();
}
}
display.setCurrent(t);
}
}</source>



== Read from URL ==



<source lang="java">
import java.io.IOException;
import java.io.InputStream;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
public class J2MEHttpExample extends MIDlet implements CommandListener {
private Command exit= new Command("Exit", Command.EXIT, 1), start= new Command("Start", Command.EXIT, 1);
private Display display;
private Form form = new Form("Customer Ranking");
public J2MEHttpExample() {
display = Display.getDisplay(this);
form.addCommand(exit);
form.addCommand(start);
form.setCommandListener(this);
}
public void startApp() throws MIDletStateChangeException {
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command command, Displayable displayable) {
if (command == exit) {
destroyApp(false);
notifyDestroyed();
} else if (command == start) {
StreamConnection connection = null;
InputStream in = null;
StringBuffer buffer = new StringBuffer();
try {
connection = (StreamConnection) Connector.open("http://www.a.ru/");
in = connection.openInputStream();
int ch;
while ((ch = in.read()) != -1) {
if (ch != "\n") {
buffer.append((char) ch);
} else {
String line = new String(buffer.toString());
if (line.equals("o")) {
int position = line.indexOf("alt=");
Alert alert = new Alert("Alert", line.substring(position + 5, position + 8), null,
null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.ERROR);
display.setCurrent(alert);
}
buffer = new StringBuffer();
}
}
} catch (IOException error) {
Alert alert = new Alert("Error", "Cannot connect", null, null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.ERROR);
display.setCurrent(alert);
}
}
}
}</source>

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Admin: 1 версия

в 17:44, 31 мая 2010