www.pudn.com > MobileServlet.rar > MobileServlet.java

import javax.microedition.midlet.*; 
import javax.microedition.lcdui.*; 
import javax.microedition.io.*; 
import java.io.*; 
import java.io.DataInputStream; 
 
public class MobileServlet extends MIDlet implements CommandListener  
{ 
Display display;  
 
TextField tf1,tf2;   
String tf1Str,tf2Str; 
Form inputForm,returnForm; 
Command cmdSend,cmdBack; 
private static String defaultURL = "http://192.167.0.12:8080/MobileServlet/ms_servlet"; 
public MobileServlet() 
{ 
 
display = Display.getDisplay(this); 
tf1 = new TextField("input first param:","卢东方",20,TextField.ANY); 
tf2 = new TextField("input second param:","王桃群",20,TextField.ANY); 
cmdSend = new Command("Send",Command.SCREEN,1); 
cmdBack = new Command("Back",Command.SCREEN,1); 
inputForm = new Form("pls input the param:"); 
inputForm.append(tf1); 
inputForm.append(tf2); 
inputForm.addCommand(cmdSend);		 
inputForm.setCommandListener(this);	 
tf1Str = tf1.getString(); 
tf2Str = tf2.getString(); 
} 
 
public void startApp() throws MIDletStateChangeException 
{ 
//display.setCurrent(inputForm);	 
try{ invokeServlet(defaultURL); 
}catch(Exception e) 
	{System.out.println(e.getMessage());} 
 
} 
 
public void invokeServlet(String url) throws IOException  
{ 
 
HttpConnection hc = null;  
DataOutputStream dos = null; 
DataInputStream dis = null;  
 
try{ 
hc = (HttpConnection)Connector.open(url,Connector.READ_WRITE); 
 
 
//设置请求属性 
hc.setRequestMethod(HttpConnection.POST); 
 //设置为POST请求方式,默认的请求方式是GET 
 
hc.setRequestProperty("IF-Modified-Since","15 Oct 2003 08:47:14 GMT"); 
hc.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0"); 
hc.setRequestProperty("Content-Language","en-CA"); 
hc.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); 
hc.setRequestProperty("Connection","Keep-Alive"); 
 
//Connection头可以控制MIDlet和Web服务器之间保持"keep alive"特色。 
//"keep alive"特色是指在MIDlet和Web服务器间始终使用同一个HTTP连接来多次传递数据 
//（在通常情况下，HTTP是无连接的协议，每次数据传输完毕后都将断开连接， 
//而下次传递数据之前将重新建立连接）  
//发送请求参数到servlet 
 
dos = hc.openDataOutputStream(); 
hc.setRequestProperty("Content_Length",Integer.toString(tf1Str.length())); 
dos.writeUTF(tf1Str);  
hc.setRequestProperty("Content_Length",Integer.toString(tf2Str.length())); 
dos.writeUTF(tf2Str); 
 
//用于发送请求参数给servlet 
System.out.println("手机传递给servlet的第一个参数为:"+ tf1Str); 
 
//主要起调试的作用，调试的结果将显示在WTK的控制台中 
System.out.println("手机传递给servlet的第一个参数为:"+ tf2Str);	 
 
dos.flush(); 
dos.close(); 
 
dis = new DataInputStream(hc.openInputStream()); 
System.out.println("测试成功测试成功!"); 
int rc = hc.getResponseCode(); 
if(rc == HttpConnection.HTTP_OK) 
	{ 
//接收servlet响应数据 
 
 
String return1Str = dis.readUTF();  
String return2Str = dis.readUTF(); 
System.out.println("手机接收到servlet端传来的第一个参数为:" + return1Str); 
//主要起调试的作用，调试的结果将显示在WTK的控制台中 
System.out.println("手机接收到servlet端传来的第二个参数为:" + return2Str); 
 
returnForm = new Form("返回的结果"); 
returnForm.append(return1Str); 
returnForm.append("\n"); 
//将返回的结果append到resultForm中 
 
returnForm.append(return2Str); 
returnForm.addCommand(cmdBack); 
returnForm.setCommandListener(this);	 
}  else{System.out.println(rc);}	 
}finally{ 
if (dis != null)  
	{dis.close();}  
if (dos != null)  
	{dos.close();} 
if (hc != null)  
	{hc.close();} 
} 
display.setCurrent(returnForm);    
} 
 
public void pauseApp(){} 
 
public void destroyApp(boolean unconditional){} 
 
public void commandAction(Command c,Displayable d){ 
if(c == cmdBack) 
	{display.setCurrent(inputForm);} 
if(c == cmdSend) 
	{tf1Str = tf1.getString();  
     tf2Str = tf2.getString(); 
//try{ invokeServlet(defaultURL); 
//}catch(Exception e) 
//	{System.out.println(e.getMessage());} 
} 
 
} 
}