JBOSS7下部署服务（一）：EJB3集成Resteasy

1、创建local接口类IHelloWorldLocal

package com.ejb.hello;import javax.ejb.Local;import javax.ws.rs.Consumes;import javax.ws.rs.GET;import javax.ws.rs.Path;import javax.ws.rs.PathParam;import javax.ws.rs.Produces;import javax.ws.rs.core.MediaType;import com.ejb.hello.model.Book;@Local@Path("/hello")@Consumes(MediaType.APPLICATION_JSON)public interface IHelloWorldLocal {@GET@Path("/say/{s}")@Produces({ MediaType.APPLICATION_JSON })public String say( @PathParam("s") String s );        @GET        @Path("/say")        @Produces("application/json")        public List<Book> say();}

2、创建接口实现类HelloWorldBean

package com.ejb.hello.impl;import javax.ejb.Stateless;import com.ejb.hello.IHelloWorldLocal;import com.ejb.hello.model.Book;@Statelesspublic class HelloWorldBean implements IHelloWorldLocal {@Overridepublic String say(String s) {// TODO Auto-generated method stubs = "Hello " + s;System.out.println(s);return s;}        @Overridepublic List say() {List list = new ArrayList();Book vo = new Book();vo.setIsbn("1");vo.setTitle("jim");list.add(vo);vo = new Book();vo.setIsbn("2");vo.setTitle("tim");list.add(vo);return list;}}

vo类Book

package com.ejb.hello.model;import java.io.Serializable;public class Book implements Serializable {private String isbn;private String title;public Book() {}public Book(String isbn, String title) {this.isbn = isbn;this.title = title;}public String getIsbn() {return isbn;}public void setIsbn(String isbn) {this.isbn = isbn;}public String getTitle() {return title;}public void setTitle(String name) {this.title = name;}@Overridepublic String toString() {return "Book [isbn=" + isbn + ", title=" + title + "]";}}

3、web.xml配置

<?xml version="1.0" encoding="UTF-8"?><web-app id="WebApp_10" version="2.4"xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"><display-name>RestTest</display-name> <context-param><param-name>resteasy.jndi.resources</param-name><param-value>java:global/ejb-hello/HelloWorldBean!com.ejb.hello.IHelloWorldLocal</param-value></context-param><context-param><param-name>resteasy.servlet.mapping.prefix</param-name><param-value>/rest</param-value></context-param><!-- <context-param><param-name>resteasy.scan</param-name><param-value>true</param-value></context-param> --><listener><listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class></listener><servlet><servlet-name>Resteasy</servlet-name><servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class></servlet><servlet-mapping><servlet-name>Resteasy</servlet-name><url-pattern>/rest/*</url-pattern></servlet-mapping></web-app>

4、把上面的接口类和实现类打包生成jar

ant build代码片段

<property name="classes.dir" value="./web/WEB-INF/classes" /><jar jarfile="ejb-hello.jar"><fileset dir="./${classes.dir}"><include name="**/IHelloWorldLocal.class" /><include name="**/Book.class" /><!--include name="**/jboss-deployment-structure.xml" /--></fileset></jar>

部署到jboss，jboss下打印出如下日志

13:47:27,976 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-2) JNDI bindings for session bean named HelloWorldBean in deployment unit deployment "ejb-hello.jar" are as follows:java:global/ejb-hello/HelloWorldBean!com.ejb.hello.IHelloWorldLocaljava:app/ejb-hello/HelloWorldBean!com.ejb.hello.IHelloWorldLocaljava:module/HelloWorldBean!com.ejb.hello.IHelloWorldLocaljava:global/ejb-hello/HelloWorldBeanjava:app/ejb-hello/HelloWorldBeanjava:module/HelloWorldBean

说明，部署完成。

5、把日志中的java:global/ejb-hello/HelloWorldBean!com.ejb.hello.IHelloWorldLocal拷贝到web.xml，修改为

 <context-param><param-name>resteasy.jndi.resources</param-name><param-value>java:global/ejb-hello/HelloWorldBean!com.ejb.hello.IHelloWorldLocal</param-value></context-param>

6、添加WEB-INF/jboss-deployment-structure.xml

<?xml version="1.0" encoding="UTF-8"?><jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1">  <deployment>    <dependencies>      <module name="org.jboss.resteasy.resteasy-jaxrs" />      <module name="org.jboss.resteasy.resteasy-jaxb-provider" />      <!-- <module name="org.jboss.resteasy.resteasy-jettison-provider" /> -->      <!-- <module name="org.jboss.resteasy.resteasy-jackson-provider"/> -->    </dependencies>      </deployment></jboss-deployment-structure>

7、把接口类（注意：不要实现类）、web.xml和jsp等打包生成war，部署到jboss

ant build代码片段

<property name="war.name" value="RestTest.war" /><jar jarfile="${war.name}"><fileset dir="./web/"><include name="**/IHelloWorldLocal.class" /><include name="**/HelloWorldBean.class" /><include name="**/Book.class" /><include name="**/web.xml" /><include name="WEB-INF/jboss-deployment-structure.xml" /></fileset></jar>

服务端部署完成

8、测试

浏览器地址栏输入：http://localhost:8080/RestTest/rest/hello/say/earthhour

如果输出

Hello earthhour

说明测试成功

输入：http://127.0.0.1:8080/RestTest/rest/hello/say

输出：

[{"isbn":"1","title":"jim"},{"isbn":"2","title":"tim"}]

9、也可以用代码测试

import org.jboss.resteasy.client.ProxyFactory;import com.ejb.hello.IHelloWorldLocal;public class ClientTestREST {  public static void main(String arg[]) {      // TODO Auto-generated method stub    try {         String REQUEST_PATH = "http://localhost:8080/RestTest/rest";         IHelloWorldLocal client = ProxyFactory.create(IHelloWorldLocal.class, REQUEST_PATH);         System.out.println(client.say("earthhour"));    } catch (Exception e) {         e.printStackTrace();    }  }}

10、如果ejb jar在war部署后，重新部署，不重新启动jboss情况下，再次测试时，会报错

Bad arguments passed to org.jboss.resteasy.spi.metadata.ResourceMethod@1f16d5e ( java.lang.String earthhour )

Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class

没有真正实现ejb的热部署，这就需要单独开发一个定时器继承ResteasyBootstrap来实现