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WebService学习笔记-Ajax通过servlet请求跨域Webservice
ajax不能直接访问跨域的Webservice，但是可以通过servlet去访问跨域的Webservice
页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="http://www.mamicode.com/js/jquery-1.11.1.min.js"></script>
<script type="text/javascript">
//var url = "http://192.168.13.232:8989/ws_01/umgsai";
$(function(){
$("#WebserviceJQuery2").click(function(){
var name = document.getElementById("username").value;
$.post("HttpURLConnectionServlet","name="+name,
function(msg){
//alert("msg");
var $Result = $(msg);
var value = $Result.find("return").text();
alert($Result.text());
},"xml");
});
</script>
</head>
<body>
name:
<input id="username" name="username" value="" />
<button id="WebserviceJQuery2">Ajax请求Webservice JQuery 跨域</button>
</body>
</html>HttpURLConnectionServlet.java
package com.umgsai.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class HttpURLConnectionServlet
*/
public class HttpURLConnectionServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public HttpURLConnectionServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String name = request.getParameter("name");
System.out.println("传过来的name："+name);
String data = "<soapenv:Envelope xmlns:soapenv=‘http://schemas.xmlsoap.org/soap/envelope/‘ xmlns:q0=‘http://ws.umgsai.com/‘ xmlns:xsd=‘http://www.w3.org/2001/XMLSchema‘ xmlns:xsi=‘http://www.w3.org/2001/XMLSchema-instance‘><soapenv:Body><q0:sayHello><arg0>" + name + "</arg0></q0:sayHello></soapenv:Body></soapenv:Envelope>";
URL url = new URL("http://192.168.13.232:8989/ws_01/umgsai");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-Type", "text/xml;charset=utf-8");
OutputStream outputStream = connection.getOutputStream();
outputStream.write(data.getBytes("utf-8"));
int responseCode = connection.getResponseCode();
if (responseCode == 200) {
//
InputStream inputStream = connection.getInputStream();
System.out.println("返回的字节数：" + inputStream.available());//
response.setContentType("text/xml;charset=utf-8");
ServletOutputStream outputStream2 = response.getOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inputStream.read(buffer)) > 0) {
outputStream2.write(buffer, 0 , len);
}
outputStream2.close();
inputStream.close();
}
outputStream.close();
connection.disconnect();
}
}无论是通过localhost还是IP地址来访问页面都可以请求webservice得到相应的结果。
本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/1563995
WebService学习笔记-Ajax通过servlet请求跨域Webservice
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