这是一个用Java调用C#版WebService接口的例子

本文介绍了一个具体的例子，展示了如何使用Java来调用C#编写的WebService接口，包括有参方法Add和无参方法HelloWorld的调用过程。

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这是一个用Java调用C#版WebService接口的例子：

C#接口：

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Services.Description;

[WebService(Namespace =   " http://www.tangs.com/ " )]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public   class Service : System.Web.Services.WebService
{
       public Service () ... {

          // 如果使用设计的组件，请取消注释以下行
          // InitializeComponent();
     }

     [SoapRpcMethod(Action =   " http://www.tangs.com/Add " , RequestNamespace =   " http://www.tangs.com/T " , ResponseNamespace =   " http://www.tangs.com/T " , Use = SoapBindingUse.Literal)]
     [WebMethod]
      public   int Add( int a, int b)
       ... {
          return a + b;
     }

     [SoapRpcMethod(Action =   " http://www.tangs.com/Hello " , RequestNamespace =   " http://www.tangs.com/T " , ResponseNamespace =   " http://www.tangs.com/T " , Use = SoapBindingUse.Literal)]
     [WebMethod]
      public String HelloWorld()
       ... {
          return   " Hello, world! " ;
     }

}
...

Java调用这个Webservice中的Add方法和HelloWorld方法：

1.有参方法：Add

public   static   void addTest() {
           try   ... {
             Integer i =   1 ;
             Integer j =   2 ;

              // WebService URL
             String service_url =   " http://localhost:4079/ws/Service.asmx " ;

             Service service =   new Service();
             Call call = (Call) service.createCall();
             call.setTargetEndpointAddress( new java.net.URL(service_url));

              // 设置要调用的方法
             call.setOperationName( new QName( " http://www.tangs.com/T " , " Add " ));

              // 该方法需要的参数
             call.addParameter( " a " , org.apache.axis.encoding.XMLType.XSD_INT,
                     javax.xml.rpc.ParameterMode.IN);
             call.addParameter( " b " , org.apache.axis.encoding.XMLType.XSD_INT,
                     javax.xml.rpc.ParameterMode.IN);

              // 方法的返回值类型
             call.setReturnType(org.apache.axis.encoding.XMLType.XSD_INT);

             call.setUseSOAPAction( true );
             call.setSOAPActionURI( " http://www.tangs.com/Add " );

              // 调用该方法
             Integer res = (Integer)call.invoke(
                       new Object[] ... {
                         i, j
                     }
             );

             System.out.println( " Result: "   + res.toString());

          }   catch (Exception e) ... {
             System.err.println(e);
         }
     } ...
运行，结果返回：Result：3

2.无参方法：HelloWorld

public   static   void helloTest() {
           try   ... {

             String endpoint =   " http://localhost:4079/ws/Service.asmx " ;
             Service service =   new Service();
             Call call = (Call) service.createCall();
             call.setTargetEndpointAddress( new java.net.URL(endpoint));
             call.setOperationName( new QName( " http://www.tangs.com/T " , " HelloWorld " ));

             call.setUseSOAPAction( true );
             call.setSOAPActionURI( " http://www.tangs.com/Hello " );


             String res = (String)call.invoke(
                       new Object[] ... {
                          null
                     }
             );


             System.out.println( " Result: "   + res);
          }   catch (Exception e) ... {
             System.err.println(e.toString());
         }
     } ...
可以看到，调用无参的webservice和有参的基本相同，不过无参调用时，不需要调用Call的addParameter方法和setReturnType方法
执行结果返回：Hello, world!