strut2伺服器與android互動資料

libs

web.xml:

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"><!-- 定義Struts2的核心控制器：FilterDispatcher --><filter><!-- 定義核心Filter的名稱 --><filter-name>struts2</filter-name><!-- 定義Filter的實作類別 --><filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class></filter><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app> 

struts.xml:

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts><constant name="struts.i18n.encoding" value="utf-8"></constant><constant name="struts.enable.DynamicMethodInvocation" value="true"></constant><package name="default" extends="json-default" namespace="/"><action name="getjson" class="com.zte.android.LoginAction"method="login"><result type="json"></result></action></package></struts>

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;}/** * 類比使用者登入的業務 */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 = "請求參數錯誤";flushData(json);return;}if (username.equals("123") && password.equals("123")){List<Student> list = new ArrayList<Student>();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 = "非法登陸資訊！";}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();}}}}

網頁ajax請求：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://"+ request.getServerName() + ":" + request.getServerPort()+ path + "/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"><meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><script type="text/javascript">var xmlHttpReq; //用於儲存XMLHttpRequest對象的全域變數  //用於建立XMLHttpRequest對象  function createXmlHttp() {//根據window.XMLHttpRequest對象是否存在使用不同的建立方式  if (window.XMLHttpRequest) {xmlHttp = new XMLHttpRequest(); //FireFox、Opera等瀏覽器支援的建立方式  } else {xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");//IE瀏覽器支援的建立方式  }}function loadAjax() {createXmlHttp(); //建立XmlHttpRequest對象  var url = "http://localhost:8080/ssh2ToAndroid/getjson.action?userName=admin&password=123456";xmlHttpReq.open("GET", url, true);xmlHttpReq.onreadystatechange = loadCallback; //IE這裡設定回呼函數  xmlHttpReq.send(null);}function loadCallback() {alert(xmlHttpReq.readyState);if (xmlHttpReq.readyState == 4) {if (xmlHttpReq.status == 200) {document.getElementById("contentDiv").innerHTML = xmlHttpReq.responseText;}}}</script><body><div id="contentTypeDiv"></div><br /><br /><div id="contentDiv"></div><input type="button" value="請求資料" onclick="loadAjax()"></body></html>

android請求資料：

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;/** * 發送請求到http服務然後接收返回報文 *  * @param path *            請求的http服務的路徑 * @return 返回請求的響應資訊 * @throws IOException */public int doGet(String path) throws IOException{URL url = new URL(path);// openConnection() 返回一個 URLConnection 對象，它表示到 URL 所引用的遠程對象的串連conn = (HttpURLConnection) url.openConnection();// 開啟一個串連conn.setRequestMethod(HTTP_REQUEST_METHOD_GET);// 設定get方式請求conn.setConnectTimeout(NetConst.CONNECTED_TIME_OUT);conn.setReadTimeout(NetConst.READ_TIME_OUT);// 打算使用 URL 串連進行輸出，則將 DoOutput 標誌設定為 trueconn.setDoOutput(true);// 這裡只設定內容類型與內容長度的頭欄位根據傳送內容決定// 內容類型Content-Type:// application/x-www-form-urlencoded、text/xml;charset=GBK// 內容長度Content-Length: 38conn.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");conn.setRequestProperty("Charset", "UTF-8");// 儲存調用http服務後的響應資訊return conn.getResponseCode();}/** * 發送請求到http服務然後接收返回報文 *  * @param jsonStr *            請求的json格式的字串 * @param path *            請求的http服務的路徑 * @return 返回請求的響應資訊 * @throws IOException */public int doPost(String jsonStr, String path) throws IOException{LogEx.d("doPost request="+jsonStr);// 得到請求報文的位元據byte[] data = jsonStr.getBytes();URL url = new URL(path);// 開啟一個串連conn = (HttpURLConnection) url.openConnection();// 設定post方式請求conn.setRequestMethod(HTTP_REQUEST_METHOD_POST);conn.setConnectTimeout(NetConst.CONNECTED_TIME_OUT);conn.setReadTimeout(NetConst.READ_TIME_OUT);// 打算使用 URL 串連進行輸出，則將 DoOutput 標誌設定為 trueconn.setDoOutput(true);conn.setDoInput(true);// 這裡只設定內容類型與內容長度的頭欄位根據傳送內容決定// 內容類型Content-Type:// application/x-www-form-urlencoded、text/xml;charset=GBK// 內容長度Content-Length: 38conn.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();// 返回寫入到此串連的輸出資料流// 把位元據寫入是輸出資料流outStream.write(data);// 記憶體中的資料刷入outStream.flush();// 關閉流outStream.close();int ic = 0;ic = conn.getResponseCode();return ic;}public String getContent() throws UnsupportedEncodingException, IOException{if (null == conn){return null;}// 儲存調用http服務後的響應資訊String msg = "";// 如果請求響應碼是200，則表示成功if (conn.getResponseCode() == NetConst.NET_CONNECTED_SUCCESS){// HTTP服務端返回的編碼是UTF-8,故必須設定為UTF-8,保持編碼統一,否則會出現中文亂碼BufferedReader in =new BufferedReader(new InputStreamReader((InputStream) conn.getInputStream(), "UTF-8"));// 返回從此開啟的串連讀取的輸入資料流msg = in.readLine();in.close();}// 中斷連線conn.disconnect();LogEx.d("doPost getContent="+msg);return msg;}}

最近在學ssh2架構，很多不懂，放著以後看看。有些代碼參照網路的。