jersey2 与 spring4 整合实践【原创】

前几年用过jeysey，那都是1.x版本的,jersey2有很多不同之处。这次我们上分布式搜索引擎，提供给业务系统的包装接口，我们准备使用restful接口，因此准备把jersey2和spring4集成起来用。以下是集成过程(本文省去spring 环境的搭建)。
1. pom引入依赖包（jersey.version=2.23）

  <dependency>
		  <groupId>org.glassfish.jersey.ext</groupId>
		  <artifactId>jersey-spring3</artifactId>
		  <version>${jersey.version}</version>
		  <exclusions>
		    <exclusion>
		      <groupId>org.springframework</groupId>
		      <artifactId>spring-core</artifactId>
		    </exclusion>			
		    <exclusion>
		      <groupId>org.springframework</groupId>
		      <artifactId>spring-web</artifactId>
		    </exclusion>
		    <exclusion>
		      <groupId>org.springframework</groupId>
		      <artifactId>spring-beans</artifactId>
		    </exclusion>
		  </exclusions>			
		</dependency>
		<dependency>
		  <groupId>org.glassfish.jersey.media</groupId>
		  <artifactId>jersey-media-json-jackson</artifactId>
		  <version>${jersey.version}</version>
		</dependency>
      <!-- spring4 相关包 -->
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>
			<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>
      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>4.1.0.RELEASE</version>
      </dependency>

2. web.xml

<servlet>
	    <servlet-name>jersey-serlvet</servlet-name>
	    <servlet-class>
	      org.glassfish.jersey.servlet.ServletContainer
	    </servlet-class>
	    <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>cn.gov.zjport.seg.search.jersey.MyApplication</param-value>
        </init-param>	
	    <load-on-startup>1</load-on-startup>
	  </servlet>
	
	  <servlet-mapping>
	    <servlet-name>jersey-serlvet</servlet-name>
	    <url-pattern>/*</url-pattern>
	  </servlet-mapping>

注：如果不用自定义的 MyApplication， spring bean 将无法注入。
3. rest服务

@Service
@Path("/selsearch")
public class SelSearchServiceImpl implements SelSearchService{
	@Resource
	private SelEsWrappedClient selEsWrappedClient;
	
	@GET
	@Path("/{param}")    
	@Produces(MediaType.TEXT_PLAIN)
	public String search(@PathParam("param") String userName) {
		return selEsWrappedClient.getName()+userName;
	}
}

SelSearchServiceImpl 和 SelEsWrappedClient 都是spring管理的bean，需要当作resource 在 MyApplication 中注册

4. 注册器

public class MyApplication extends ResourceConfig {

    /**
     * Register JAX-RS application components.
     */
    public MyApplication () {
    	
    	  //自己写的服务
    	  register(SelSearchServiceImpl.class);

    	  //用 Jackson JSON 的提供者来解释 JSON
    	  register(JacksonFeature.class);
    	
    	  //Spring filter 提供了 JAX-RS 和 Spring 请求属性之间的桥梁
    	  register(RequestContextFilter.class);
    }
}

5. 访问 http://localhost:8080/seg-search-webapp/selsearch/xxx 即可