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上一篇，我们通过客户端的Java代码访问webservice，这一篇，我们通过HttpURLConnection请求webservice,如果使用ajax直接请求webservice，会存在跨域的问题，
比如：如果我发布的地址是localhost的，那么在页面的js里使用IP访问的话，就会有问题，访问不了。
页面请求的servlet代码：
package com.cxf.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class HttpURLConnectionServlet
*/
@WebServlet("/HttpURLConnectionServlet")
public class HttpURLConnectionServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public HttpURLConnectionServlet() {
super();
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String code=request.getParameter("code");
System.out.println("code:"+code);
//请求体
String data="<soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/'><soap:Body><ns2:getOrderById xmlns:ns2='http://ws.cxf.com/'><arg0>"+code+"</arg0></ns2:getOrderById></soap:Body></soap:Envelope>";
URL url=new URL("http://localhost:8088/cxf_spring_ws/ws/orderws");
HttpURLConnection openConnection = (HttpURLConnection) url.openConnection();
openConnection.setDoOutput(true);//是否从httpUrlConnection输出
openConnection.setDoInput(true);// 设置是否从httpUrlConnection读入
openConnection.setRequestMethod("POST");//请求类型
openConnection.setRequestProperty("Content-Type","text/xml;charset=utf-8");
OutputStream outputStream = openConnection.getOutputStream();
outputStream.write(data.getBytes("utf-8"));//向服务端写入数据
/**
* 当相应码为200的时候，说明请求成功
*/
int responseCode = openConnection.getResponseCode();
if(responseCode==200){
InputStream inputStream = openConnection.getInputStream();//读取服务端的数据
System.out.println("return:"+inputStream.available());
/**
* 将请求得到的数据写到页面
*/
byte[] buffer=new byte[1024];
response.setContentType("text/xml;charset=utf-8");
ServletOutputStream os = response.getOutputStream();
int len;
while((len=inputStream.read(buffer))>0){
os.write(buffer, 0, len);
}
os.flush();
}
}
}
jsp页面：
<%@ 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">
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
$(function(){
$("#bt").click(function(){
var code=$("#code").val();
$.post(
'HttpURLConnectionServlet',
{"code":code},
function(msg){
var $msg=$(msg);
var info=$msg.find("return").text();
alert(info);
},
'xml'
);
});
});
</script>
</head>
<body>
<input type="text" id="code">
<input type="button" id="bt" value="调用webservice">
</body>
</html>
