Ejb发布成webservice

落日映苍穹つ 2024-02-17 15:48 61阅读 0赞

1. 将EJB发布成，或者说暴露成Web服务（也许更贴切），在EJB容器中不是困难的事情，只要容器实现了JavaEE的JAX-WS标准就行了，开发人员要做的就是增加一点点有关WebService的注解，打包发布到应用容器即可。不过在笔者使用JBoss5作为EJB容器的时候，调用Web服务出现了异常~~~最后发现是JDK版本的问题，改用JDK1.5编译EJB类、启动JBoss后才能正常调用。这个问题先留着，回头使用JBoss6的时候在试试吧~~~~

2. helloworld服务端代码

服务端不用再强制规定WebService必须实现一个接口了，而一个普通的POJO+EJB注解的类就可以当做WebService服务器类。

代码如下：

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 <td> package&nbsp;webservice.HelloWebService; &nbsp; import&nbsp;javax.ejb.Stateless; import&nbsp;javax.jws.WebService; &nbsp; @Stateless @WebService(name =&nbsp;"HelloWebService") public&nbsp;class&nbsp;HelloWebService { &nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;String sayHello(String name) { &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.out.println("客户端调用了服务器端的代码"); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;"你好:"&nbsp;+ name+",传授给你武功--旋空斩"; &nbsp;&nbsp;&nbsp;&nbsp;} } </td> 
 </tr> 
 </tbody> 
</table>

将此类打包部署到JBoss容器中，重启JBoss，打开链接

[http://127.0.0.1:8080/jbossws][http_127.0.0.1_8080_jbossws]看到如下界面  
![ff24da43-9a1b-30b3-a5c3-746a4d48b464.jpg][]  
选择[View a list of deployed services][]查看webservice列表  
![8447539d-73ef-3e2c-952d-5a2b98a0eeab.jpg][]

点击链接即可看到WSDL文档

<table> 
 <tbody> 
 <tr> 
 <td> &lt;definitions name='HelloWebServiceService' targetNamespace='http://HelloWebService.webservice/' xmlns='http://schemas.xmlsoap.org/wsdl/' xmlns:soap='http://schemas.xmlsoap.org/wsdl/soap/' xmlns:tns='http://HelloWebService.webservice/' xmlns:xsd='http://www.w3.org/2001/XMLSchema'&gt; &nbsp;&lt;types&gt; &nbsp;&nbsp;&lt;xs:schema targetNamespace='http://HelloWebService.webservice/' version='1.0' xmlns:tns='http://HelloWebService.webservice/' xmlns:xs='http://www.w3.org/2001/XMLSchema'&gt; &nbsp;&nbsp;&nbsp;&lt;xs:element name='sayHello' type='tns:sayHello'/&gt; &nbsp;&nbsp;&nbsp;&lt;xs:element name='sayHelloResponse' type='tns:sayHelloResponse'/&gt; &nbsp;&nbsp;&nbsp;&lt;xs:complexType name='sayHello'&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;xs:sequence&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;xs:element minOccurs='0' name='arg0' type='xs:string'/&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;/xs:sequence&gt; &nbsp;&nbsp;&nbsp;&lt;/xs:complexType&gt; &nbsp;&nbsp;&nbsp;&lt;xs:complexType name='sayHelloResponse'&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;xs:sequence&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;xs:element minOccurs='0' name='return' type='xs:string'/&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;/xs:sequence&gt; &nbsp;&nbsp;&nbsp;&lt;/xs:complexType&gt; &nbsp;&nbsp;&lt;/xs:schema&gt; &nbsp;&lt;/types&gt; &nbsp;&lt;message name='HelloWebService_sayHelloResponse'&gt; &nbsp;&nbsp;&lt;part element='tns:sayHelloResponse' name='sayHelloResponse'&gt;&lt;/part&gt; &nbsp;&lt;/message&gt; &nbsp;&lt;message name='HelloWebService_sayHello'&gt; &nbsp;&nbsp;&lt;part element='tns:sayHello' name='sayHello'&gt;&lt;/part&gt; &nbsp;&lt;/message&gt; &nbsp;&lt;portType name='HelloWebService'&gt; &nbsp;&nbsp;&lt;operation name='sayHello' parameterOrder='sayHello'&gt; &nbsp;&nbsp;&nbsp;&lt;input message='tns:HelloWebService_sayHello'&gt;&lt;/input&gt; &nbsp;&nbsp;&nbsp;&lt;output message='tns:HelloWebService_sayHelloResponse'&gt;&lt;/output&gt; &nbsp;&nbsp;&lt;/operation&gt; &nbsp;&lt;/portType&gt; &nbsp;&lt;binding name='HelloWebServiceBinding' type='tns:HelloWebService'&gt; &nbsp;&nbsp;&lt;soap:binding style='document' transport='http://schemas.xmlsoap.org/soap/http'/&gt; &nbsp;&nbsp;&lt;operation name='sayHello'&gt; &nbsp;&nbsp;&nbsp;&lt;soap:operation soapAction=''/&gt; &nbsp;&nbsp;&nbsp;&lt;input&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;soap:body use='literal'/&gt; &nbsp;&nbsp;&nbsp;&lt;/input&gt; &nbsp;&nbsp;&nbsp;&lt;output&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;soap:body use='literal'/&gt; &nbsp;&nbsp;&nbsp;&lt;/output&gt; &nbsp;&nbsp;&lt;/operation&gt; &nbsp;&lt;/binding&gt; &nbsp;&lt;service name='HelloWebServiceService'&gt; &nbsp;&nbsp;&lt;port binding='tns:HelloWebServiceBinding' name='HelloWebServicePort'&gt; &nbsp;&nbsp;&nbsp;&lt;soap:address location='http://127.0.0.1:8080/EJBWebService/HelloWebService'/&gt; &nbsp;&nbsp;&lt;/port&gt; &nbsp;&lt;/service&gt; &lt;/definitions&gt; </td> 
 </tr> 
 </tbody> 
</table>

1. 客户端测试程序

我们使用IDE工具生成客户端代码，在MyEclipse中选择new菜单，选择Web服务客户端，如下图所示  
![e5b6aadf-d4e7-3ffe-b511-a47dd27f01a6.jpg][]  
选择生成代码的目标项目和类型  
![5d98a7a4-29ab-30e6-89b9-906959ac93cd.jpg][]  
之后输入WSDL文档的URL位置，如下图所示  
![afea6991-f6b5-3339-b303-40ad5a9e698b.jpg][]  
之后选择Next进入加入依赖包的选项  
![6ebbd98c-79bc-33ab-adee-918dbbf3c004.jpg][]

如果不加入任何依赖包也可以，可以手工下载CXF项目([http://cxf.apache.org/][http_cxf.apache.org])，将它的lib下的wsdl4j-version.jar、XmlSchema-version.jar拷贝到客户端Classpath下面就行。

之后生成的代码如下  
![7f7b7707-8577-3199-bedc-493fe0a0759b.jpg][]

其中HelloWebServiceService是需要客户端稍微关心一下的类，客户端调用这个类的方法就能调到服务器端的代码。测试程序如下

<table> 
 <tbody> 
 <tr> 
 <td> &nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;void&nbsp;main(String[] args) { &nbsp;&nbsp;&nbsp;&nbsp;HelloWebServiceService&nbsp;helloWebServiceService =&nbsp;new&nbsp;HelloWebServiceService(); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HelloWebService helloWebService = helloWebServiceService.getHelloWebServicePort(); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(helloWebService.sayHello("单锋剑尊")); &nbsp;&nbsp;&nbsp;&nbsp;} </td> 
 </tr> 
 </tbody> 
</table>

[http_127.0.0.1_8080_jbossws]: http://127.0.0.1:8080/jbossws
[ff24da43-9a1b-30b3-a5c3-746a4d48b464.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/f3561b029bcd45199da1987d37494eac.png
[View a list of deployed services]: http://127.0.0.1:8080/jbossws/services
[8447539d-73ef-3e2c-952d-5a2b98a0eeab.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/5c0bdf99d5a84425bb58abcd61f84e3e.png
[e5b6aadf-d4e7-3ffe-b511-a47dd27f01a6.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/8257ac0322ae4186abfbf9a731e78c78.png
[5d98a7a4-29ab-30e6-89b9-906959ac93cd.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/deb8fa90d046463a8a42be4b579c54bf.png
[afea6991-f6b5-3339-b303-40ad5a9e698b.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/3c6bb4bad7134e7fb58e62cce4a2dfee.png
[6ebbd98c-79bc-33ab-adee-918dbbf3c004.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/4287d5f3141346db9795e1eeb8b94f73.png
[http_cxf.apache.org]: http://cxf.apache.org/
[7f7b7707-8577-3199-bedc-493fe0a0759b.jpg]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/dd8859c9bc6f4be390a1613b42fed2e6.png