在Seam项目中快速实现Web Service

[原创于：http://happydev.iteye.com]

 

以前写Web Service一直是用Axis来做，用了Seam来开发Web后，这次为了项目的简洁，决定采用“在Seam项目中写JbossWS”的方案来实现WebService。

 

第一步：实现基于POJO的JBossWS Web Service

写基于POJO的Web Service实现：

 

@WebService
public class TestService {

	@WebMethod
	public String test(){
                        //....
	}
}

 

如果在Web Service中要使用到Seam的会话，则需在POJO代码所在位置的META-INF目录中加上standard-jaxws-endpoint-config.xml

 

<jaxws-config xmlns="urn:jboss:jaxws-config:2.0" 
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
              xmlns:javaee="http://java.sun.com/xml/ns/javaee"
              xsi:schemaLocation="urn:jboss:jaxws-config:2.0 jaxws-config_2_0.xsd">
   <endpoint-config>
      <config-name>Seam WebService Endpoint</config-name>
      <pre-handler-chains>
         <javaee:handler-chain>
            <javaee:protocol-bindings>##SOAP11_HTTP</javaee:protocol-bindings>
            <javaee:handler>
               <javaee:handler-name>SOAP Request Handler</javaee:handler-name>
               <javaee:handler-class>org.jboss.seam.webservice.SOAPRequestHandler</javaee:handler-class>
            </javaee:handler>
         </javaee:handler-chain>
      </pre-handler-chains>
   </endpoint-config>
</jaxws-config>

 

 

在web.xml中注册EndPoint

   <!-- Web Service -->
   <servlet>
      <servlet-name>TestService Servlet</servlet-name>
      <servlet-class>test.TestService</servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>
    
   <servlet-mapping>
      <servlet-name>TestService Servlet</servlet-name>
      <url-pattern>/TestService</url-pattern>
   </servlet-mapping>

 

第二步：使得Web Service能够访问Seam组件

 

如果就上面的代码，在Web Service中是无法访问Seam组件的，会提示没有Seam环境。

在WebService中访问Seam组件：

@WebService
public class TestService {

	@WebMethod
	public String test(){
		TestSeamComp comp = (TestSeamComp) Component.getInstance("testSeamComp");
		return comp.test();
	}
}

 

@Name("testSeamComp")
@AutoCreate
public class TestSeamComp {

	
	public String test(){
		return "from testSeamComp";
	}
}

 

如果就使用以上的代码，会抛出Seam环境找不到的异常。

需要在components.xml中做如下配置：

中声明中增加：

xmlns:web="http://jboss.com/products/seam/web"

和

http://jboss.com/products/seam/web http://jboss.com/products/seam/web-2.0.xsd

完整的components.xml头大概如下：

<components xmlns="http://jboss.com/products/seam/components"
            xmlns:core="http://jboss.com/products/seam/core"
            xmlns:persistence="http://jboss.com/products/seam/persistence"
            xmlns:drools="http://jboss.com/products/seam/drools"
            xmlns:bpm="http://jboss.com/products/seam/bpm"
            xmlns:security="http://jboss.com/products/seam/security"
            xmlns:mail="http://jboss.com/products/seam/mail"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:web="http://jboss.com/products/seam/web"
            xsi:schemaLocation=
                "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd 
                 http://jboss.com/products/seam/web http://jboss.com/products/seam/web-2.0.xsd
                 http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd 
                 http://jboss.com/products/seam/drools http://jboss.com/products/seam/drools-2.0.xsd
                 http://jboss.com/products/seam/bpm http://jboss.com/products/seam/bpm-2.0.xsd
                 http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.0.xsd
                 http://jboss.com/products/seam/mail http://jboss.com/products/seam/mail-2.0.xsd
                 http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd">

 

 

再加上：

<web:context-filter url-pattern="/TestService/*"/>

 

 

 

 

评论

3 楼 genghaixu 2009-02-25  

请问 要是需要配置多个webservice 应当如何配置呢？

2 楼 dlbaba 2008-12-01  

想学学，楼主都做过哪些webservice成型的成品啊？？

1 楼 dlbaba 2008-12-01  

  不错吗 比seam文档详细多了 哈哈