httptest.java

jBuilderX无线应用开发源代码

import java.io.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class HTTPTest extends MIDlet implements CommandListener,Runnable{
	
	private Display display;
	
	private Command back = new Command("Back",Command.BACK,0) ;
        
	private String urlStrPost = "http://localhost:8080/myexample/index.html";
	private String urlStrGet =  "http://localhost:8080/myexample/index.html";
	
	private boolean beGet=false;

	public HTTPTest(){
		display = Display.getDisplay(this);
	}
	
	public void startApp() {
		MainForm();
	}
	
	public void MainForm()
    {
        //请求方法选择列表
        List myList = new List("Choose HTTP Request Method", Choice.IMPLICIT) ;
        myList.append("POST", null) ;		//POST方法
        myList.append("GET", null) ;		//GET方法
        myList.setCommandListener(this);
        display.setCurrent(myList) ;
    }
    
	public void pauseApp(){
	}
	
	public void destroyApp(boolean unconditional){
	}
	//使用Get方法
	public void HTTPGet(String urlStrGet) throws IOException {
		HttpConnection hc = null;				//HttpConnection连接
		InputStream is = null;					//用于读入数据
		StringBuffer buf = new StringBuffer();		//用于保存服务器的响应数据
		TextBox t = null;
		
		try{
			//打开一个HttpConnection连接
			hc = (HttpConnection)Connector.open(urlStrGet);
			//设置请求方法
			hc.setRequestMethod(HttpConnection.GET);
			//设置请求属性
			hc.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0");
			is = hc.openDataInputStream();
			int ch;
			//接收服务器的响应数据		
			while((ch = is.read()) != -1) {
				buf.append((char) ch);
			}
			
			t = new TextBox("Get Test Page", buf.toString(), 1024, 0);
			t.addCommand(back);
			t.setCommandListener(this);
		}finally {
				is.close();
				hc.close();
			}
		display.setCurrent(t);
	}
	//使用POST方法
	public void HTTPPost(String urlStrPost) throws IOException {
		HttpConnection hc = null;				//HttpConnection连接
		InputStream is = null;					//用于读入数据	
		OutputStream os = null;				//用于发出请求
		StringBuffer buf = new StringBuffer();		//用于保存服务器的响应数据
		TextBox t = null;
		
		try{
			//打开一个HttpConnection连接
			hc = (HttpConnection) Connector.open(urlStrPost);
			//设置请求方法
			hc.setRequestMethod(HttpConnection.POST);
			//设置请求属性
			hc.setRequestProperty("CONTENT-TYPE","application/x-www-form-Agent");
			hc.setRequestProperty("User-Agent","Profile/MIDP-1.0 Configuration/CLDC-1.0");
			hc.setRequestProperty("Content-Language","en-CA");
			os = hc.openOutputStream();
			
			String str = "key=value";
			byte postmsg[] = str.getBytes();
			//发送请求
			for(int i = 0; i < postmsg.length; i++) {
				os.write(postmsg[i]);
			}
			os.flush();
			is = hc.openDataInputStream();
			int ch;
			//接收服务器的响应数据
			while((ch = is.read()) != -1) {
				buf.append((char)ch);
			}
			
			t = new TextBox("Post Test Page", buf.toString(), 1024, 0);
			t.addCommand(back);
			t.setCommandListener(this);
		}finally{
				is.close();
				os.close();
				hc.close();
		}
		display.setCurrent(t);
	}

	public void commandAction(Command c,Displayable s)
    {
        //主屏幕的菜单选择
        if(c == List.SELECT_COMMAND ) {
            List tmp = (List) s ;
            //确定选择了哪一种方法
           switch(tmp.getSelectedIndex()){
               case 0 :    beGet=false;			//选择了POST方法
                           break ;
               case 1 :    beGet=true;			//选择了GET方法
                           break ;
          }
           Thread t=new Thread(this);			//启动线程
           t.start();
	    }
        //返回选择界面
        if(c.getLabel().equals("Back")) {
            MainForm() ;
        }
    }
    
    public void run(){
    	try{
	    	if(beGet==true)						//调用GET请求方法
	    		HTTPGet(urlStrGet) ;
	    	else
	    		HTTPPost(urlStrPost) ;				//调用POST请求方法
	    }catch(Exception e){
    		e.printStackTrace();
    	}
    }
}