使用Ajax和HttpURLConnection发送webservice请求（cxf3）

其实质就是向webservice放送soap信息，比如上一篇的soap信息为

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Header><daidao><name>kevin</name><password>123456</password></daidao></soap:Header>
    <soap:Body><ns2:selectByPrimaryKey xmlns:ns2="http://service.cxf.rain6.com/"><arg0>143347</arg0></ns2:selectByPrimaryKey>
    </soap:Body>
</soap:Envelope>

1.Ajax（会有跨域的问题）

　主要就是js代码

$("#btn").click(function(){ //回调函数
            var name = document.getElementById("name").value;
            var data = 'soap信息';
            $.ajax({
                type : "post",
                url : "http://localhost:8092/webservice/testService",
                data : data,
                success : function(msg){
                    alert("------");
                    var $Result = $(msg);
                    var value = $Result.find("return").text();
                    alert(value);
                },
                error : function(msg) {
                    //alert("-----"+msg);
                },
                dataType : "xml"
            });
        });

2.HttpURLConnection

　　1)简单点，直接web.xml配置该sevlet

<servlet>
        <description></description>
        <display-name>HttpURLConnectionServlet</display-name>
        <servlet-name>HttpURLConnectionServlet</servlet-name>
        <servlet-class>httptows.HttpURLConnectionServlet</servlet-class>
</servlet>
<servlet-mapping>
        <servlet-name>HttpURLConnectionServlet</servlet-name>
        <url-pattern>/HttpURLConnectionServlet</url-pattern>
</servlet-mapping>

　　2)HttpURLConnectionServlet.java

public class HttpURLConnectionServlet {
    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("name");
        System.out.println("doPost "+name);

        String data = "soap信息";
　　　　　//localhost建议改为ip地址
        URL url = new URL("http://localhost:8092/webservice/testService");

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod("POST");
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setRequestProperty("Content-Type", "text/xml;charset=utf-8");

        OutputStream os = connection.getOutputStream();
        os.write(data.getBytes("utf-8"));

        int responseCode = connection.getResponseCode();
        if(responseCode==200) {
            InputStream is = connection.getInputStream();//String xml
            System.out.println("return "+is.available());

            response.setContentType("text/xml;charset=utf-8");
            ServletOutputStream outputStream = response.getOutputStream();

            byte[] buffer = new byte[1024];
            int len = 0;
            while((len=is.read(buffer))>0) {
                outputStream.write(buffer, 0, len);
            }
            outputStream.flush();
        }
    }
}

 　　3)前端调用

$("#btn2").click(function(){
      var name = document.getElementById("name").value;
      $.post(
            "HttpURLConnectionServlet",
            "name="+name,
            function(msg) {
               //alert(msg);
               var $Result = $(msg);
               var value = $Result.find("return").text();
               alert(value);
             },
             "xml"
          );
   });