J2ME下载并读取服务器txt文件
J2ME下载并读取服务器txt文件，我用的公司的服务器，大家如果测试代码需要修改为自己的url，本实例是将服务器的txt文件内容添加到TextField显示，当然也可以保存到RMS中，代码如下：
package com.mopietek;import java.io.DataInputStream;import java.io.IOException;import javax.microedition.io.Connector;import javax.microedition.io.HttpConnection;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.Form;import javax.microedition.lcdui.TextField;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class LoadTextMidlet extends MIDlet implements Runnable,CommandListener{private Display display;private Thread textThread;private Form mainForm,textForm;private TextField textField;public final static Command exitCommand = new Command("退出",Command.EXIT,1);public LoadTextMidlet() {}protected void destroyApp(boolean arg0) throws MIDletStateChangeException {}protected void pauseApp() {}protected void startApp() throws MIDletStateChangeException {display = Display.getDisplay(this);mainForm = new Form("主窗口");textForm = new Form("文本窗口");textField = new TextField("call me 邪道少年","hello",1024,TextField.ANY);textForm.addCommand(exitCommand);textForm.setCommandListener(this);display.setCurrent(mainForm); textThread = new Thread(this); textThread.start();}public void run(){String URL = "http://dev.mopietek.net:8080/waptest03/down/wap.txt";String text = loadText(URL); //获取服务器文本textField.setString(text);textForm.append(textField);display.setCurrent(textForm);}public String loadText(String url){HttpConnection hpc = null;DataInputStream dis = null;try{hpc = (HttpConnection) Connector.open(url);int length = (int) hpc.getLength();byte[]data = new byte[length];dis = new DataInputStream(hpc.openInputStream());dis.readFully(data);return new String(data);}catch(Exception e){e.printStackTrace();return null;}finally{if(hpc != null)try {hpc.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}if(dis != null)try {dis.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}public void commandAction(Command c, Displayable arg1) {if(c==exitCommand){this.notifyDestroyed();}}}Jerry is test the server