Android(安卓)实现Http get 和post操作

配置服务器

这个是我的Web实体

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%><%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>    <body> <h3>GET方法</h3>     <form action="Test" method="get"><P>学号：<input name="id" type="text" /></P><p>姓名：<input name="name" type="text" /></p><p><input name="" type="submit" value="确定" />  <input name="cancel" type="reset" value="取消" /></p></form><h3>POST方法</h3> <form action="Test" method="post"><P>学号：<input name="id" type="text" /></P><p>姓名：<input name="name" type="text" /></p><p><input name="" type="submit" value="确定" />  <input name="cancel" type="reset" value="取消" /></p></form>  </body>  </html>

配置Servlet

Test.java

package rw.servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class Test extends HttpServlet {/** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. *  * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("gb2312");response.setContentType("text/html;charset=gb2312");PrintWriter out = response.getWriter();        String idString=request.getParameter("id");        String nameString=request.getParameter("name");        out.println(idString);        out.println(nameString);out.flush();out.close();}/** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. *  * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("gb2312");response.setContentType("text/html;charset=gb2312");PrintWriter out = response.getWriter();        String idString=request.getParameter("id");        String nameString=request.getParameter("name");        out.println(idString);        out.println(nameString);out.flush();out.close();}}

web.xml配置情况

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"> <display-name>Test</display-name> <servlet>  <description>This is the description of my J2EE component</description>  <display-name>This is the display name of my J2EE component</display-name>  <servlet-name>Test</servlet-name>  <servlet-class>rw.servlet.Test</servlet-class> </servlet> <servlet-mapping>  <servlet-name>Test</servlet-name>  <url-pattern>/Test</url-pattern> </servlet-mapping> <welcome-file-list>  <welcome-file>index.jsp</welcome-file> </welcome-file-list> <login-config>  <auth-method>BASIC</auth-method> </login-config></web-app>

Android get方法实现

/*     * GEt请求     */    void GetDate(){    String idString=G_textView01.getText().toString();    String nameString=G_textView02.getText().toString();    String url=urlString+"?"+"id="+idString+"&name="+nameString;    HttpGet get=new HttpGet(url);    HttpClient client=new DefaultHttpClient();    try {response=client.execute(get);//执行Post方法resultString=EntityUtils.toString(response.getEntity());R_textView01.setText(resultString);} catch (Exception e) {// TODO: handle exception}    }

Post请求

 /*     * POST请求     */    void PostDate(){    String idString=P_textView01.getText().toString();    String nameString=P_textView02.getText().toString();    NameValuePair pair1=new BasicNameValuePair("id", idString);    NameValuePair pair2=new BasicNameValuePair("name", nameString);    List<NameValuePair> list=new ArrayList<NameValuePair>();    list.add(pair1);    list.add(pair2);    try {HttpEntity httpEntity=new UrlEncodedFormEntity(list);//使用编码构建Post实体HttpPost post=new HttpPost(urlString);    post.setEntity(httpEntity);//设置Post实体    HttpClient client=new DefaultHttpClient();            response=client.execute(post);//执行Post方法            resultString=EntityUtils.toString(response.getEntity());            R_textView01.setText(resultString);} catch (UnsupportedEncodingException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (ClientProtocolException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}            }

加入联网权限 <uses-permission android:name="android.permission.INTERNET"></uses-permission>

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