mainservlet.java

j2me简单实例,j2me教程加源码,希望大家喜欢

package com.j2medev.provision;

import java.io.*;
import java.util.Enumeration;
import java.util.Hashtable;
import javax.servlet.*;
import javax.servlet.http.*;

public class MainServlet extends HttpServlet {
    
    public static final String JAD_FILE = "helloworld.jad";
    public static final String JAR_FILE = "helloworld.jar";
    //替换为你的服务器地址
    public static final String HOST = "http://localhost:8080";
    
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/vnd.wap.wml;charset=UTF-8");
        //输出HTTP Header
        Enumeration headers = request.getHeaderNames();
        while(headers.hasMoreElements()){
            String header = (String)headers.nextElement();
            String value = request.getHeader(header);
            System.out.println(header+":"+value);
        }
        //判断是否是应用程序安装状态的返回码
        String action = request.getParameter("action");
        if(action != null){
            System.out.println(action);
            String id = request.getParameter("id");
            System.out.println(id);
            ServletInputStream is = request.getInputStream();
            byte[] data = new byte[request.getContentLength()];
            System.out.println("content-length="+request.getContentLength());
            //读取返回内容，通常是返回码 描述信息的格式，例如900 Success
            is.read(data);
            System.out.println(new String(data));
            return;
        }
        //存储应用程序的根目录
        String path = getServletContext().getRealPath("/")+"ota";
        Hashtable apps = new Hashtable();
        File file = new File(path);
        if(file.isDirectory()){
            //列出存放MIDlet套件应用程序的目录
            File[] dirs = file.listFiles();
            for(int i = 0;i<dirs.length;i++){
                if(dirs[i].isDirectory()){
                    apps.put(dirs[i].getName(),HOST+request.getContextPath()+"/ota/"+dirs[i].getName()+"/"+JAD_FILE);
                }
            }
        }
        request.setAttribute("appsList",apps);
        //将请求转发给wml页面显示出来
        RequestDispatcher dispatcher = request.getRequestDispatcher("/index.jsp");
        dispatcher.forward(request,response);
        
    }
    
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    public String getServletInfo() {
        return "OTA Download";
    }
}