利用java编写简单的wenservice实例

使用Axis编写WebService比较简单，就我的理解，WebService的实现代码和编写Java代码其实没有什么区别，主要是将哪些Java类发布为WebService。下面是一个从编写测试例子到发布WebService，以及编写测试代码的过程介绍。

      本例子的WebService提供了两个方法，分别是sayHello和sayHelloToPerson，第一个只是返回一个"Hello"字符串，没有参数，第二个函数接受一个字符串作为参数，返回"Hello 参数值"，该例子比较简单，但是清楚的说明了从编写代码到发布为WebService以及测试编写好的WebService全过程。

编写服务代码
      服务代码提供了两个函数，分别为sayHello和sayHelloToPerson，源代码如下：

Java代码 
1./* 
2. * File name: HelloService.java 
3. *  
4. * Version: v1.0 
5. *  
6. * Created on Aug 2, 2008 9:40:20 AM 
7. *  
8. * Designed by Stephen 
9. *  
10. * (c)Copyright 2008 
11. */ 
12.package com.sinosoft.webservice;  
13. 
14./** *//** 
15. * @author Stephen 
16. *  
17. * Test web service 
18. */ 
19.public class HelloService {  
20.    /** *//** 
21.     * 不带参数的函数 
22.     *  
23.     * @return 返回Hello字符串 
24.     */ 
25.    public String sayHello() {  
26.        return "Hello";  
27.    }  
28. 
29.    /** *//** 
30.     * 带参数的函数 
31.     *  
32.     * @param name 
33.     *            名称 
34.     * @return 返回加上名称的欢迎词 
35.     */ 
36.    public String sayHelloToPerson(String name) {  
37.        if (name == null || name.equals("")) {  
38.            name = "nobody";  
39.        }  
40.        return "Hello " + name;  
41.    }  
42.} 
/*
* File name: HelloService.java
*
* Version: v1.0
*
* Created on Aug 2, 2008 9:40:20 AM
*
* Designed by Stephen
*
* (c)Copyright 2008
*/
package com.sinosoft.webservice;

/** *//**
* @author Stephen
*
* Test web service
*/
public class HelloService {
    /** *//**
     * 不带参数的函数
     *
     * @return 返回Hello字符串
     */
    public String sayHello() {
        return "Hello";
    }

    /** *//**
     * 带参数的函数
     *
     * @param name
     *            名称
     * @return 返回加上名称的欢迎词
     */
    public String sayHelloToPerson(String name) {
        if (name == null || name.equals("")) {
            name = "nobody";
        }
        return "Hello " + name;
    }
}




发布WebService

      要将上边写的HelloService类发布为WebService，需要先搭建Web应用。下面是在Tomcat下使用Axis（http://ws.apache.org/axis/）创建WebService服务的例子。

在Tomcat下创建Web应用
在该例子中，在Tomcat下创建了一个context path为ws的WEB应用。

     1. 在myeclipse中创建WebServiceTest的webproject

     2. 在WEB-INF文件夹下web.xml文件，该文件的内容如下：

Xml代码 
1.<?xml version="1.0" encoding="ISO-8859-1"?> 
2. 
3.<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web  
4.Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"> 
5. 
6.<web-app> 
7.  <display-name>Apache-Axis</display-name> 
8.      
9.    <listener> 
10.        <listener-class>org.apache.axis.transport.http.AxisHTTPSessionListener</listener-class> 
11.    </listener> 
12.      
13.  <servlet> 
14.    <servlet-name>AxisServlet</servlet-name> 
15.    <display-name>Apache-Axis Servlet</display-name> 
16.    <servlet-class> 
17.        org.apache.axis.transport.http.AxisServlet  
18.    </servlet-class> 
19.  </servlet> 
20. 
21.  <servlet> 
22.    <servlet-name>AdminServlet</servlet-name> 
23.    <display-name>Axis Admin Servlet</display-name> 
24.    <servlet-class> 
25.        org.apache.axis.transport.http.AdminServlet  
26.    </servlet-class> 
27.    <load-on-startup>100</load-on-startup> 
28.  </servlet> 
29. 
30.  <servlet> 
31.    <servlet-name>SOAPMonitorService</servlet-name> 
32.    <display-name>SOAPMonitorService</display-name> 
33.    <servlet-class> 
34.        org.apache.axis.monitor.SOAPMonitorService  
35.    </servlet-class> 
36.    <init-param> 
37.      <param-name>SOAPMonitorPort</param-name> 
38.      <param-value>5001</param-value> 
39.    </init-param> 
40.    <load-on-startup>100</load-on-startup> 
41.  </servlet> 
42. 
43.  <servlet-mapping> 
44.    <servlet-name>AxisServlet</servlet-name> 
45.    <url-pattern>/servlet/AxisServlet</url-pattern> 
46.  </servlet-mapping> 
47. 
48.  <servlet-mapping> 
49.    <servlet-name>AxisServlet</servlet-name> 
50.    <url-pattern>*.jws</url-pattern> 
51.  </servlet-mapping> 
52. 
53.  <servlet-mapping> 
54.    <servlet-name>AxisServlet</servlet-name> 
55.    <url-pattern>/services/*</url-pattern> 
56.  </servlet-mapping> 
57. 
58.  <servlet-mapping> 
59.    <servlet-name>SOAPMonitorService</servlet-name> 
60.    <url-pattern>/SOAPMonitor</url-pattern> 
61.  </servlet-mapping> 
62. 
63. <!-- uncomment this if you want the admin servlet --> 
64. <!--  
65.  <servlet-mapping> 
66.    <servlet-name>AdminServlet</servlet-name> 
67.    <url-pattern>/servlet/AdminServlet</url-pattern> 
68.  </servlet-mapping> 
69. --> 
70. 
71.    <session-config> 
72.        <!-- Default to 5 minute session timeouts --> 
73.        <session-timeout>5</session-timeout> 
74.    </session-config> 
75. 
76.    <!-- currently the W3C havent settled on a media type for WSDL;  
77.    http://www.w3.org/TR/2003/WD-wsdl12-20030303/#ietf-draft  
78.    for now we go with the basic 'it's XML' response --> 
79.  <mime-mapping> 
80.    <extension>wsdl</extension> 
81.     <mime-type>text/xml</mime-type> 
82.  </mime-mapping> 
83.    
84. 
85.  <mime-mapping> 
86.    <extension>xsd</extension> 
87.    <mime-type>text/xml</mime-type> 
88.  </mime-mapping> 
89. 
90.  <welcome-file-list id="WelcomeFileList"> 
91.    <welcome-file>index.jsp</welcome-file> 
92.    <welcome-file>index.html</welcome-file> 
93.    <welcome-file>index.jws</welcome-file> 
94.  </welcome-file-list> 
95. 
96.</web-app> 
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
  <display-name>Apache-Axis</display-name>
   
    <listener>
        <listener-class>org.apache.axis.transport.http.AxisHTTPSessionListener</listener-class>
    </listener>
   
  <servlet>
    <servlet-name>AxisServlet</servlet-name>
    <display-name>Apache-Axis Servlet</display-name>
    <servlet-class>
        org.apache.axis.transport.http.AxisServlet
    </servlet-class>
  </servlet>

  <servlet>
    <servlet-name>AdminServlet</servlet-name>
    <display-name>Axis Admin Servlet</display-name>
    <servlet-class>
        org.apache.axis.transport.http.AdminServlet
    </servlet-class>
    <load-on-startup>100</load-on-startup>
  </servlet>

  <servlet>
    <servlet-name>SOAPMonitorService</servlet-name>
    <display-name>SOAPMonitorService</display-name>
    <servlet-class>
        org.apache.axis.monitor.SOAPMonitorService
    </servlet-class>
    <init-param>
      <param-name>SOAPMonitorPort</param-name>
      <param-value>5001</param-value>
    </init-param>
    <load-on-startup>100</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/servlet/AxisServlet</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>*.jws</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/services/*</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>SOAPMonitorService</servlet-name>
    <url-pattern>/SOAPMonitor</url-pattern>
  </servlet-mapping>

<!-- uncomment this if you want the admin servlet -->
<!--
  <servlet-mapping>
    <servlet-name>AdminServlet</servlet-name>
    <url-pattern>/servlet/AdminServlet</url-pattern>
  </servlet-mapping>
-->

    <session-config>
        <!-- Default to 5 minute session timeouts -->
        <session-timeout>5</session-timeout>
    </session-config>

    <!-- currently the W3C havent settled on a media type for WSDL;
    http://www.w3.org/TR/2003/WD-wsdl12-20030303/#ietf-draft
    for now we go with the basic 'it's XML' response -->
  <mime-mapping>
    <extension>wsdl</extension>
     <mime-type>text/xml</mime-type>
  </mime-mapping>
 

  <mime-mapping>
    <extension>xsd</extension>
    <mime-type>text/xml</mime-type>
  </mime-mapping>

  <welcome-file-list id="WelcomeFileList">
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jws</welcome-file>
  </welcome-file-list>

</web-app>




在上面的web.xml中主要是配置了axis的相关配置。

axis的相关配置
在上述的web.xml文件中已经对axis进行了配置，但是还需要进行额外的配置。

     复制axis相关的jar文件

     将axis的相关jar文件复制到WEB-INF\lib文件夹下。这些文件包括：

activation.jar
axis.jar
axis-ant.jar
commons-discovery-0.2.jar
commons-logging-1.0.4.jar
jaxrpc.jar
log4j-1.2.8.jar
saaj.jar
wsdl4j-1.5.1.jar


 

测试发布的Web应用

启动Tomcat服务，打开IE浏览器，访问地址http://127.0.0.1:8080/WebServiceTest/services，如果看到如下界面就说明AXIS部署成功了。






发布WebService
     发布WebService需要使用现有的AdminService来实现，这里我写了一个批处理文件来发布WebService，以后如果需要发布其他文件，只需要修改相应的参数就可以了。

创建deploy.wsdd文件
文件deploy.wsdd内容如下所示：

Xml代码 
1.<?xml version="1.0" encoding="UTF-8"?> 
2.<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"> 
3.    <service name="HelloServices" provider="java:RPC"> 
4.        <parameter name="className" value="com.sinosoft.webservice.HelloService"/> 
5.        <parameter name="allowedMethods" value="*"/> 
6.    </service> 
7.</deployment> 
<?xml version="1.0" encoding="UTF-8"?>
<deployment xmlns="http://xml.apache.org/axis/wsdd/" xmlns:java="http://xml.apache.org/axis/wsdd/providers/java">
    <service name="HelloServices" provider="java:RPC">
        <parameter name="className" value="com.sinosoft.webservice.HelloService"/>
        <parameter name="allowedMethods" value="*"/>
    </service>
</deployment>




创建发布WebService服务的批处理文件

批处理文件deploywebservice.bat内容如下：

Xml代码 
1.java -cp axis-ant.jar;axis-schema.jar;axis.jar;commons-discovery-0.2.jar;commons-logging-1.0.4.jar;jaxrpc.jar;log4j-1.2.8.jar;saaj.jar;wsdl4j-1.5.1.jar;xmlsec-1.3.0.jar org.apache.axis.client.AdminClient -lhttp://localhost:8080/WebServiceTest/services/AdminService deploy.wsdd  
2. 
3.pause 
java -cp axis-ant.jar;axis-schema.jar;axis.jar;commons-discovery-0.2.jar;commons-logging-1.0.4.jar;jaxrpc.jar;log4j-1.2.8.jar;saaj.jar;wsdl4j-1.5.1.jar;xmlsec-1.3.0.jar org.apache.axis.client.AdminClient -lhttp://localhost:8080/WebServiceTest/services/AdminService deploy.wsdd

pause



  其中上面的jar包我都拷到和bat文件在同一个目录，现在将所有的jar文件都加入到classpath中进行执行。

     -l后的参数是本地要发布WebService的AdminService对应的访问地址。

     最后deploy.wsdd是对应的配置文件名称。

发布WebService服务
将deploy.wsdd文件和deploywebservice.bat文件复制到同一个文件夹下，执行deploywebservice.bat批处理文件，就可以将deploy.wsdd中描述的Java类发布为WebService。发布完成之后在访问http://host:port/ws/services如下图所示：







从上图可以看出，发布成功后，多了一个HelloServices的服务。这样就说明HelloService发布成功了。

查看HelloServices的wsdl
     访问http://127.0.0.1:8080/WebServiceTest/services/HelloServices?wsdl可以看到如下wsdl的内容：

Xml代码 
1.<?xml version="1.0" encoding="UTF-8"?> 
2.<wsdl:definitions targetNamespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:intf="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
3.<!--WSDL created by Apache Axis version: 1.4  
4.Built on Apr 22, 2006 (06:55:48 PDT)--> 
5. 
6.   <wsdl:message name="sayHelloToPersonRequest"> 
7. 
8.      <wsdl:part name="name" type="soapenc:string"/> 
9. 
10.   </wsdl:message> 
11. 
12.   <wsdl:message name="sayHelloRequest"> 
13. 
14.   </wsdl:message> 
15. 
16.   <wsdl:message name="sayHelloToPersonResponse"> 
17. 
18.      <wsdl:part name="sayHelloToPersonReturn" type="soapenc:string"/> 
19. 
20.   </wsdl:message> 
21. 
22.   <wsdl:message name="sayHelloResponse"> 
23. 
24.      <wsdl:part name="sayHelloReturn" type="soapenc:string"/> 
25. 
26.   </wsdl:message> 
27. 
28.   <wsdl:portType name="HelloService"> 
29. 
30.      <wsdl:operation name="sayHello"> 
31. 
32.         <wsdl:input message="impl:sayHelloRequest" name="sayHelloRequest"/> 
33. 
34.         <wsdl:output message="impl:sayHelloResponse" name="sayHelloResponse"/> 
35. 
36.      </wsdl:operation> 
37. 
38.      <wsdl:operation name="sayHelloToPerson" parameterOrder="name"> 
39. 
40.         <wsdl:input message="impl:sayHelloToPersonRequest" name="sayHelloToPersonRequest"/> 
41. 
42.         <wsdl:output message="impl:sayHelloToPersonResponse" name="sayHelloToPersonResponse"/> 
43. 
44.      </wsdl:operation> 
45. 
46.   </wsdl:portType> 
47. 
48.   <wsdl:binding name="HelloServicesSoapBinding" type="impl:HelloService"> 
49. 
50.      <wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/> 
51. 
52.      <wsdl:operation name="sayHello"> 
53. 
54.         <wsdlsoap:operation soapAction=""/> 
55. 
56.         <wsdl:input name="sayHelloRequest"> 
57. 
58.            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://webservice.sinosoft.com" use="encoded"/> 
59. 
60.         </wsdl:input> 
61. 
62.         <wsdl:output name="sayHelloResponse"> 
63. 
64.            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" use="encoded"/> 
65. 
66.         </wsdl:output> 
67. 
68.      </wsdl:operation> 
69. 
70.      <wsdl:operation name="sayHelloToPerson"> 
71. 
72.         <wsdlsoap:operation soapAction=""/> 
73. 
74.         <wsdl:input name="sayHelloToPersonRequest"> 
75. 
76.            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://webservice.sinosoft.com" use="encoded"/> 
77. 
78.         </wsdl:input> 
79. 
80.         <wsdl:output name="sayHelloToPersonResponse"> 
81. 
82.            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" use="encoded"/> 
83. 
84.         </wsdl:output> 
85. 
86.      </wsdl:operation> 
87. 
88.   </wsdl:binding> 
89. 
90.   <wsdl:service name="HelloServiceService"> 
91. 
92.      <wsdl:port binding="impl:HelloServicesSoapBinding" name="HelloServices"> 
93. 
94.         <wsdlsoap:address location="http://127.0.0.1:8080/WebServiceTest/services/HelloServices"/> 
95. 
96.      </wsdl:port> 
97. 
98.   </wsdl:service> 
99. 
100.</wsdl:definitions> 
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:intf="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<!--WSDL created by Apache Axis version: 1.4
Built on Apr 22, 2006 (06:55:48 PDT)-->

   <wsdl:message name="sayHelloToPersonRequest">

      <wsdl:part name="name" type="soapenc:string"/>

   </wsdl:message>

   <wsdl:message name="sayHelloRequest">

   </wsdl:message>

   <wsdl:message name="sayHelloToPersonResponse">

      <wsdl:part name="sayHelloToPersonReturn" type="soapenc:string"/>

   </wsdl:message>

   <wsdl:message name="sayHelloResponse">

      <wsdl:part name="sayHelloReturn" type="soapenc:string"/>

   </wsdl:message>

   <wsdl:portType name="HelloService">

      <wsdl:operation name="sayHello">

         <wsdl:input message="impl:sayHelloRequest" name="sayHelloRequest"/>

         <wsdl:output message="impl:sayHelloResponse" name="sayHelloResponse"/>

      </wsdl:operation>

      <wsdl:operation name="sayHelloToPerson" parameterOrder="name">

         <wsdl:input message="impl:sayHelloToPersonRequest" name="sayHelloToPersonRequest"/>

         <wsdl:output message="impl:sayHelloToPersonResponse" name="sayHelloToPersonResponse"/>

      </wsdl:operation>

   </wsdl:portType>

   <wsdl:binding name="HelloServicesSoapBinding" type="impl:HelloService">

      <wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>

      <wsdl:operation name="sayHello">

         <wsdlsoap:operation soapAction=""/>

         <wsdl:input name="sayHelloRequest">

            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://webservice.sinosoft.com" use="encoded"/>

         </wsdl:input>

         <wsdl:output name="sayHelloResponse">

            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" use="encoded"/>

         </wsdl:output>

      </wsdl:operation>

      <wsdl:operation name="sayHelloToPerson">

         <wsdlsoap:operation soapAction=""/>

         <wsdl:input name="sayHelloToPersonRequest">

            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://webservice.sinosoft.com" use="encoded"/>

         </wsdl:input>

         <wsdl:output name="sayHelloToPersonResponse">

            <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://127.0.0.1:8080/WebServiceTest/services/HelloServices" use="encoded"/>

         </wsdl:output>

      </wsdl:operation>

   </wsdl:binding>

   <wsdl:service name="HelloServiceService">

      <wsdl:port binding="impl:HelloServicesSoapBinding" name="HelloServices">

         <wsdlsoap:address location="http://127.0.0.1:8080/WebServiceTest/services/HelloServices"/>

      </wsdl:port>

   </wsdl:service>

</wsdl:definitions>


用Java调用WebService实例
     下面是用Java调用刚发布的WebService例子。



Java代码 
1./* 
2. * File name: TestHelloService.java 
3. *  
4. * Version: v1.0 
5. *  
6. * Created on Aug 2, 2008 9:54:10 AM 
7. *  
8. * Designed by Stephen 
9. *  
10. * (c)Copyright 2008 
11. */ 
12.package test.com.sinosoft.webservice;  
13. 
14.import java.io.IOException;  
15.import java.net.MalformedURLException;  
16. 
17.import javax.xml.namespace.QName;  
18.import javax.xml.rpc.ServiceException;  
19. 
20.import org.apache.axis.client.Call;  
21.import org.apache.axis.client.Service;  
22.import org.apache.commons.logging.Log;  
23.import org.apache.commons.logging.LogFactory;  
24. 
25./** 
26. * @author Stephen 
27. *  
28. * 测试调用WebService 
29. */ 
30.public class TestHelloService {  
31.    private static final Log log = LogFactory.getLog(TestHelloService.class);  
32.    private static final String HELLO_SERVICE_ENDPOINT = "http://127.0.0.1:8080/WebServiceTest/services/HelloServices?wsdl";  
33. 
34.    public static void main(String[] args) {  
35.        TestHelloService tester = new TestHelloService();  
36.        // tester.callSayHello();  
37.        tester.callSayHelloToPerson();  
38.    }  
39. 
40.    public void callSayHello() {  
41.        try {  
42.            Service service = new Service();  
43.            Call call = (Call) service.createCall();  
44.            call.setTargetEndpointAddress(new java.net.URL(  
45.                    HELLO_SERVICE_ENDPOINT));  
46.            //下面名字查询的http://127.0.0.1:8080/WebServiceTest/services/HelloServices?wsdl文件里有  
47.            call.setOperationName(new QName("http://webservice.sinosoft.com/",  
48.                    "sayHello"));  
49.            call.setReturnType(org.apache.axis.Constants.XSD_STRING);  
50.            try {  
51.                //远程调用发布的方法  
52.                String ret = (String) call.invoke(new Object[] {});  
53.                System.out.println("The return value is:" + ret);  
54.                return;  
55.            } catch (IOException e) {  
56.                e.printStackTrace();  
57.            }  
58.        } catch (MalformedURLException e) {  
59.            e.printStackTrace();  
60.        } catch (ServiceException e) {  
61.            e.printStackTrace();  
62.        }  
63.        log.error("call sayHello service error!");  
64.    }  
65. 
66.    public void callSayHelloToPerson() {  
67.        try {  
68.            Service service = new Service();  
69.            Call call = (Call) service.createCall();  
70.            call.setTargetEndpointAddress(new java.net.URL(HELLO_SERVICE_ENDPOINT));  
71.            call.setOperationName(new QName("http://webservice.sinosoft.com/",  
72.                    "sayHelloToPerson"));  
73.            call.addParameter("name", org.apache.axis.Constants.XSD_STRING,  
74.                    javax.xml.rpc.ParameterMode.IN);  
75.            call.setReturnType(org.apache.axis.Constants.XSD_STRING);  
76.            try {  
77.                String ret = (String) call.invoke(new Object[] { "Stephen" });  
78.                System.out.println("The return value is:" + ret);  
79.                return;  
80.            } catch (IOException e) {  
81.                e.printStackTrace();  
82.            }  
83.        } catch (MalformedURLException e) {  
84.            e.printStackTrace();  
85.        } catch (ServiceException e) {  
86.            e.printStackTrace();  
87.        }  
88.        log.error("call sayHello service error!");  
89.    }  
90.}