Android 实现Http get 和post操作 -

RW1314

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Android 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">
	
  </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" />

</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" />

</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 {

}

web.xml配置情况

web.xml

Android get方法实现

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 block
			e.printStackTrace();
		} catch (ClientProtocolException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	
    	
    }