J2ME手机与服务器交互的一个Bean

J2ME手机与服务器交互的一个Bean

J2ME手机与服务器交互的一个Bean ServletApp.java

import java.io.*;

import java.sql.*;

import javax.servlet.*;

import javax.servlet.http.*;

public class ServletApp extends HttpServlet{

public void doGet(HttpServletRequest request,HttpServletResponse response)

throws IOException,ServletException

{

long usersize=0;

String return1Str='测试成功';

response.setContentType('text/html; charset=GBK');

//设置响应属性

//接收客户端的请求

InputStream is = request.getInputStream();

DataInputStream dis = new DataInputStream(is);

String tf1Str = dis.readUTF();

//处理客户端信息

if(!tf1Str.equals('^*')){

System.out.println('servlet端接收到手机传来的第一个参数为：' + tf1Str);

File i = new File('E:\\jakarta-tomcat-5.0.28\\webapps\\servlets-examples\\WEB-INF\\classes\\input.txt');

DataOutputStream in = new DataOutputStream(new FileOutputStream(i));

in.writeUTF(tf1Str);

// 将新信息写入input.txt．

in.close();

}

File f = new File('E:\\jakarta-tomcat-5.0.28\\webapps\\servlets-examples\\WEB-INF\\classes\\user.txt');

InputStreamReader read = new InputStreamReader (new FileInputStream(f));

BufferedReader reader=new BufferedReader(read);

while (reader.readLine() != null) {return1Str= reader.readLine();}

//改变检测数值为当前文件长度

System.out.println('servlet传递给手机的第一个参数为:' + return1Str);

DataOutputStream dos = new DataOutputStream(response.getOutputStream());

if(usersize!= f.length())

{usersize= f.length();

dos.writeUTF(return1Str);}

else

{//return1Str='^';

dos.writeUTF('^');

}

//如果文件大小未改变则设回复信息为＂＾＂（无信息标志）

//发送处理后的参数给手机

}

public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException {doGet(request,response);}

public void destroy(){}

//清除资源

}