使用HttpClient对Web Service调用

使用HttpClient对Web Service调用（转）

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


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);

动态构造调用串的话如下实现：

     private  String tns;
     private  String methodName;
     private  String wsdlLocation;
     private  String soapResponseData;

private  int  invoke(Map < String, String >  patameterMap)  throws  Exception  {
        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)  {
        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();
    }