java代码通过HttpClient发送WebService请求

import java.io.ByteArrayInputStream;   import java.io.InputStream;     import org.apache.commons.httpclient.HttpClient;   import org.apache.commons.httpclient.methods.InputStreamRequestEntity;   import org.apache.commons.httpclient.methods.PostMethod;   import org.apache.commons.httpclient.methods.RequestEntity;     public class Saml_Test {       private static final String soapRequestData =   "       <SOAP:Envelope xmlns:SOAP=\"http://schemas.xmlsoap.org/soap/envelope/\">"  +"      <SOAP:Header>"  +"      <wsse:Security xmlns:wsse=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd\">"  +"          <wsse:UsernameToken xmlns:wsse=\"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd\">"  +"              <wsse:Username>administrator</wsse:Username>"  +"              <wsse:Password>cordys</wsse:Password>"  +"          </wsse:UsernameToken>"  +"      </wsse:Security>"  +"  </SOAP:Header>"  +"  <SOAP:Body>"  +"      <samlp:Request xmlns:samlp=\"urn:oasis:names:tc:SAML:1.0:protocol\" MajorVersion=\"1\" MinorVersion=\"1\">"  +"          <samlp:AuthenticationQuery>"  +"              <saml:Subject xmlns:saml=\"urn:oasis:names:tc:SAML:1.0:assertion\">"  +"                  <saml:NameIdentifier Format=\"urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified\">administrator</saml:NameIdentifier>"  +"              </saml:Subject>"  +"          </samlp:AuthenticationQuery>"  +"      </samlp:Request>"  +"  </SOAP:Body>"  +"</SOAP:Envelope>";       public static void main(String[] args) {           try {               System.out.println(soapRequestData);               PostMethod postmethod = new PostMethod(                       "http://10.200.1.128/cordys/com.eibus.web.soap.Gateway.wcp");               byte[] b = soapRequestData.getBytes("UTF-8");               InputStream is = new ByteArrayInputStream(b, 0, b.length);               RequestEntity re = new InputStreamRequestEntity(is, b.length,                       "application/xop+xml; charset=UTF-8; type=\"text/xml\"");               postmethod.setRequestEntity(re);               HttpClient httpClient = new HttpClient();               int statusCode = httpClient.executeMethod(postmethod);               System.out.println("statuscode=" + statusCode);               String soapResponseData = postmethod.getResponseBodyAsString();               System.out.println(soapResponseData);           } catch (Exception ex) {               ex.printStackTrace();           }       }   }