使用HttpClient对Web Service调用

转http://www.blogjava.net/mrcold/archive/2010/05/27/322051.html

1用到的jar包有：
    commons-codec-1.3.jar
    commons-httpclient-3.0.jar
    commons-logging-1.0.4.jar

2具体流程大致这样：

String soapRequestData = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
        "<soap12:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap12=\"http://www.w3.org/2003/05/soap-envelope\">" +
          "<soap12:Body>" +
           " <qqCheckOnline xmlns=\"http://WebXml.com.cn/\">" +
          "    <qqCode>349104641</qqCode>" +
         "   </qqCheckOnline>" +
        "  </soap12:Body>" +
        "</soap12:Envelope>";
        
        System.out.println(soapRequestData);


    //PostMethod postMethod = new PostMethod("http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl");
    
    PostMethod postMethod = new PostMethod("http://www.webxml.com.cn/webservices/qqOnlineWebService.asmx?wsdl");

   // 然后把Soap请求数据添加到PostMethod中


    byte[] b = soapRequestData.getBytes("utf-8");
    InputStream is = new ByteArrayInputStream(b,0,b.length);
    RequestEntity re = new InputStreamRequestEntity(is,b.length,"application/soap+xml; charset=utf-8");
    postMethod.setRequestEntity(re); 
    
    //最后生成一个HttpClient对象，并发出postMethod请求

    HttpClient httpClient = new HttpClient();
    int statusCode = httpClient.executeMethod(postMethod);
    String soapResponseData =  postMethod.getResponseBodyAsString();
        
        
    System.out.print(soapResponseData);

3动态构造调用串的话如下实现：

  public String tns="needtel.rmp.portal";//命名空间
  public String methodName="BeginSession";//方法名
  public String wsdlLocation="http://127.0.0.1/RMPPortal/Service.asmx?wsdl";//地址
  public String soapResponseData;//返回值

private int invoke(Map<String, String> patameterMap) throws Exception {
//调用具体方法
        PostMethod postMethod = new PostMethod(wsdlLocation);
        String soapRequestData = buildRequestData(patameterMap);

        byte[] bytes = soapRequestData.getBytes("utf-8");
        InputStream inputStream = new ByteArrayInputStream(bytes, 0,
                bytes.length);
        RequestEntity requestEntity = new InputStreamRequestEntity(inputStream,
                bytes.length, "application/soap+xml; charset=utf-8");
        postMethod.setRequestEntity(requestEntity);

        HttpClient httpClient = new HttpClient();
        int statusCode = httpClient.executeMethod(postMethod);
        soapResponseData = postMethod.getResponseBodyAsString();
        return statusCode;
    }

    private String buildRequestData(Map<String, String> patameterMap) {
　　//构建请求XML格式参数

　　StringBuffer soapRequestData = new StringBuffer();
　　soapRequestData.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
　　soapRequestData
　　.append("<soap12:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:　　soap12=\"http://www.w3.org/2003/05/soap-envelope\">");
　　soapRequestData.append("<soap12:Body>");
　　soapRequestData.append("<" + methodName + " xmlns=\"" + tns + "\">");
　　Set<String> nameSet = patameterMap.keySet();
　　for (String name : nameSet) {
　　　　soapRequestData.append("<" + name + ">" + patameterMap.get(name)
　　　　+ "</" + name + ">");
　　}
　　soapRequestData.append("</" + methodName + ">");
　　soapRequestData.append("</soap12:Body>");
　　soapRequestData.append("</soap12:Envelope>");

　　　　return soapRequestData.toString();
    }