libs如图：
web.xml:
struts2 org.apache.struts2.dispatcher.FilterDispatcher struts2 /* index.jsp
struts.xml:
Student.java
package com.zte.android;public class Student{ private String name; private String age; private String school; private String phone; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } public String getSchool() { return school; } public void setSchool(String school) { this.school = school; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; }} Login.action:
package com.zte.android;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.struts2.interceptor.ServletRequestAware;import org.apache.struts2.interceptor.ServletResponseAware;import com.google.gson.Gson;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport implements ServletRequestAware, ServletResponseAware{ /** * */ private static final long serialVersionUID = 1L; HttpServletRequest request; HttpServletResponse response; private String username; private String password; public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public void setServletRequest(HttpServletRequest request) { this.request = request; } public void setServletResponse(HttpServletResponse response) { this.response = response; } /** * 模拟用户登录的业务 */ public void login() { returnUserInfo(); } private void returnUserInfo() { this.response.setContentType("text/json;charset=utf-8"); this.response.setCharacterEncoding("UTF-8"); String json; if (username == null || password == null) { json = "请求参数错误"; flushData(json); return; } if (username.equals("123") && password.equals("123")) { List list = new ArrayList (); Gson gson = new Gson(); for (int i = 0; i < 10; i++) { Student st = new Student(); st.setAge("10" + i); st.setName("csh" + i); st.setPhone("1333007" + i); st.setSchool("abc" + i); list.add(st); } json = gson.toJson(list); } else { json = "非法登陆信息！"; } flushData(json); } private void flushData(String json) { byte[] jsonBytes; try { jsonBytes = json.getBytes("utf-8"); response.setContentLength(jsonBytes.length); response.getOutputStream().write(jsonBytes); response.getOutputStream().flush(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { response.getOutputStream().close(); } catch (IOException e) { e.printStackTrace(); } } }} 网页ajax请求：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%>android请求数据：My JSP 'index.jsp' starting page
package com.zte.android.greenweb.launcher.http;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.UnsupportedEncodingException;import java.net.HttpURLConnection;import java.net.URL;import com.zte.android.greenweb.launcher.util.LogEx;import com.zte.android.greenweb.launcher.util.NetConst;public class HttpConnectionClient{ public static final String HTTP_REQUEST_METHOD_GET = "GET"; public static final String HTTP_REQUEST_METHOD_POST = "POST"; private HttpURLConnection conn = null; /** * 发送请求到http服务然后接收返回报文 * * @param path * 请求的http服务的路径 * @return 返回请求的响应信息 * @throws IOException */ public int doGet(String path) throws IOException { URL url = new URL(path); // openConnection() 返回一个 URLConnection 对象，它表示到 URL 所引用的远程对象的连接 conn = (HttpURLConnection) url.openConnection();// 打开一个连接 conn.setRequestMethod(HTTP_REQUEST_METHOD_GET);// 设置get方式请求 conn.setConnectTimeout(NetConst.CONNECTED_TIME_OUT); conn.setReadTimeout(NetConst.READ_TIME_OUT); // 打算使用 URL 连接进行输出，则将 DoOutput 标志设置为 true conn.setDoOutput(true); // 这里只设置内容类型与内容长度的头字段根据传送内容决定 // 内容类型Content-Type: // application/x-www-form-urlencoded、text/xml;charset=GBK // 内容长度Content-Length: 38 conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8"); conn.setRequestProperty("Charset", "UTF-8"); // 保存调用http服务后的响应信息 return conn.getResponseCode(); } /** * 发送请求到http服务然后接收返回报文 * * @param jsonStr * 请求的json格式的字符串 * @param path * 请求的http服务的路径 * @return 返回请求的响应信息 * @throws IOException */ public int doPost(String jsonStr, String path) throws IOException { LogEx.d("doPost request="+jsonStr); // 得到请求报文的二进制数据 byte[] data = jsonStr.getBytes(); URL url = new URL(path); // 打开一个连接 conn = (HttpURLConnection) url.openConnection(); // 设置post方式请求 conn.setRequestMethod(HTTP_REQUEST_METHOD_POST); conn.setConnectTimeout(NetConst.CONNECTED_TIME_OUT); conn.setReadTimeout(NetConst.READ_TIME_OUT); // 打算使用 URL 连接进行输出，则将 DoOutput 标志设置为 true conn.setDoOutput(true); conn.setDoInput(true); // 这里只设置内容类型与内容长度的头字段根据传送内容决定 // 内容类型Content-Type: // application/x-www-form-urlencoded、text/xml;charset=GBK // 内容长度Content-Length: 38 conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8"); conn.setRequestProperty("Charset", "UTF-8"); conn.setRequestProperty("Content-Length", String.valueOf(data.length)); OutputStream outStream = conn.getOutputStream();// 返回写入到此连接的输出流 // 把二进制数据写入是输出流 outStream.write(data); // 内存中的数据刷入 outStream.flush(); // 关闭流 outStream.close(); int ic = 0; ic = conn.getResponseCode(); return ic; } public String getContent() throws UnsupportedEncodingException, IOException { if (null == conn) { return null; } // 保存调用http服务后的响应信息 String msg = ""; // 如果请求响应码是200，则表示成功 if (conn.getResponseCode() == NetConst.NET_CONNECTED_SUCCESS) { // HTTP服务端返回的编码是UTF-8,故必须设置为UTF-8,保持编码统一,否则会出现中文乱码 BufferedReader in = new BufferedReader(new InputStreamReader( (InputStream) conn.getInputStream(), "UTF-8"));// 返回从此打开的连接读取的输入流 msg = in.readLine(); in.close(); } // 断开连接 conn.disconnect(); LogEx.d("doPost getContent="+msg); return msg; }} 最近在学ssh2框架，很多不懂，放着以后看看。有些代码参照网络的。