利用resteasy框架构建rest webservice----第四波：resteasy与spring真正集成发布我们的restful webservice 服务（实例、教程）

思路：这节我们把resteasy和spring结合了(非spring mvc),我的理解就是资源都交给spring来管理了，我们需要的资源需要到spring容器之中去获取

问题汇总:一直出现org.jboss.resteasy.plugins.spring.SpringContextLoaderListener这个类找不到，而实际上本地仓库是已经有了，经过检查eclipse映射的发布项目

发现没有resteasy-spring这个JAR包拿过去

1.  <context-param>
        <param-name>resteasy.scan.resources</param-name>      
        <param-value>true</param-value>
    </context-param> -->

这个东西可能不能写，写了发现有问题，原因不详

2.如果使用m2eclipse的话，可能必须在m2eclipse中执行eclipse命令

3.不得已的话添加MAVEN依赖试试

原本以为根据文档集成resteasy与spring很简单，但是却还是花费的一定时间，避免大家走弯路----现在网上有的相关的集成都只是，spring加入进项目，木有与resteasy真正集成

老规矩，先上MAVEN的配置文件中依赖包：

 <dependencies>
   <!-- core library -->
   <dependency>
      <groupId>org.jboss.resteasy</groupId>
      <artifactId>resteasy-jaxrs</artifactId>
      <version>2.2.1.GA</version>
   </dependency>

   <!-- optional modules -->
     <!-- Spring integration -->
   <dependency>
      <groupId>org.jboss.resteasy</groupId>
      <artifactId>resteasy-spring</artifactId>
      <version>2.2.1.GA</version>
   </dependency>

   <!-- JAXB support -->
   <dependency>
      <groupId>org.jboss.resteasy</groupId>
      <artifactId>resteasy-jaxb-provider</artifactId>
      <version>2.2.1.GA</version>
   </dependency>

   <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring</artifactId>
                                <version>2.5.6.SEC03</version>
                       </dependency>
</dependencies>

注意上图中得resteasy-spring模块依赖，和spring依赖

resteasy-spring直接配置似乎不能自动下载，如果不行可以自己去官网下载然后安装到私服仓库

还有spring的依赖必须是要有的，resteasy-spring只是提供集成代码

2.关键的web.xml中得配置

<!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>Archetype Created Web Application</display-name>
  <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:applicationContext*.xml</param-value>
    </context-param>
  <!--

    <context-param>

        <param-name>resteasy.scan.resources</param-name>
        <param-value>true</param-value>
    </context-param>
    -->
  <listener>
      <listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class>
   </listener>

<listener>
    <listener-class>org.jboss.resteasy.plugins.spring.SpringContextLoaderListener</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>/*</url-pattern>
   </servlet-mapping>

</web-app>

相比原来的配置文件多了

<listener-class>org.jboss.resteasy.plugins.spring.SpringContextLoaderListener</listener-class>

和

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:applicationContext*.xml</param-value>
    </context-param>

3.application.xml的配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd ">
    <!-- service point -->
    <bean id="testServicePoint" class="com.jd.interfacce.service.point.TestServicePoint">
        <property name="manager" ref="manager" />
    </bean>
    <!-- MANAGER -->
    <bean id="manager" class="com.jd.interfacce.manager.impl.ManagerImpl"/>
</beans>

其中

testServicePoint

是我们的资源resouce也就是发布接口的类

4.资源类

package com.jd.interfacce.service.point;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;

import com.jd.interfacce.manager.Manager;
/**
 * service point endpoint
 * @author
 *
 */
@Path(value = "/")
public class TestServicePoint {
    Manager manager;

    @GET
    @Path(value = "/echo/{message}")
    public String getMessage(@PathParam(value = "message") String message)
    {
//      return message;
        return manager.getMessage(message);
    }

    public Manager getManager() {
        return manager;
    }
    public void setManager(Manager manager) {
        this.manager = manager;
    }
}

5.manager类

package com.jd.interfacce.manager.impl;

import com.jd.interfacce.manager.Manager;

public class ManagerImpl implements Manager{
    @Override
    public String getMessage(String message)
    {
        return message;
    }
}