@Resource注入

 package cn.jvpy.ejb3;
 
 public interface HelloResource {
     public String sayHello();
 
     public Integer sayNumber();
 }

 1 package cn.jvpy.ejb3.impl;
 2 
 3 import javax.annotation.Resource;
 4 import javax.ejb.Remote;
 5 import javax.ejb.Stateless;
 6 
 7 import cn.jvpy.ejb3.HelloResource;
 8 
 9 @Stateless
 @Remote(HelloResource.class)
 public class HelloResourceBean implements HelloResource {
 
     @Resource(name = "SayHelloHello")
     private String hello;
 
     @Resource(name = "integer_value")
     private Integer number;
 
     public String sayHello() {
         return hello;
     }
 
     public Integer sayNumber() {
         return number;
     }
 }
 

 1 package cn.jvpy.test;
 2 
 3 import javax.naming.InitialContext;
 4 import javax.naming.NamingException;
 5 
 6 import cn.jvpy.ejb3.HelloResource;
 7 
 8 public class EJBTest {
 9     public static void main(String[] args) {
         try {
             InitialContext ctx = new InitialContext();
             HelloResource resource = (HelloResource) ctx.lookup("HelloResourceBean/remote");
             System.out.println(resource.sayHello());
             System.out.println(resource.sayNumber());
         } catch (NamingException e) {
             e.printStackTrace();
         }
     }
 

 1 <ejb-jar xmlns="http://java.sun.com/xml/ns/javaee"
 2     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd"
 4     version="3.0">
 5     <enterprise-beans>
 6         <session>
 7             <ejb-name>HelloResourceBean</ejb-name>
 8             <remote>cn.jvpy.ejb3.HelloResource</remote>
 9             <ejb-class>cn.jvpy.ejb3.impl.HelloResourceBean</ejb-class>
             <session-type>Stateless</session-type>
             <transaction-type>Container</transaction-type>
             <env-entry>
                 <env-entry-name>SayHelloHello</env-entry-name>
                 <env-entry-type>java.lang.String</env-entry-type>
                 <env-entry-value>String injected by resource!</env-entry-value>
             </env-entry>
             <env-entry>
                 <env-entry-name>integer_value</env-entry-name>
                 <env-entry-type>java.lang.Integer</env-entry-type>
                 <env-entry-value>70000000</env-entry-value>
             </env-entry>
         </session>
     </enterprise-beans>
 </ejb-jar

运行结果：