1.开发准备如下2个工具类
package org.lxh.util;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URL;
import java.util.Map;
package org.lxh.util;
imp
