spring_Demo4_Annotation_Resource

来源参考：

@ResourceSpring also supports injection using the JSR-250 @Resource annotation on fields or bean property setter methods. This is a common pattern in Java EE 5 and 6, for example in JSF 1.2 managed beans or JAX-WS 2.0 endpoints. Spring supports this pattern for Spring-managed objects as well.@Resource takes a name attribute, and by default Spring interprets that value as the bean name to be injected. In other words, it follows by-name semantics, as demonstrated in this example:public class SimpleMovieLister {    private MovieFinder movieFinder;    @Resource(name="myMovieFinder")    public void setMovieFinder(MovieFinder movieFinder) {        this.movieFinder = movieFinder;    }}If no name is specified explicitly, the default name is derived from the field name or setter method. In case of a field, it takes the field name; in case of a setter method, it takes the bean property name. So the following example is going to have the bean with name "movieFinder" injected into its setter method:public class SimpleMovieLister {    private MovieFinder movieFinder;    @Resource    public void setMovieFinder(MovieFinder movieFinder) {        this.movieFinder = movieFinder;    }}

demo 参考：

bean.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd"><context:annotation-config />  <bean id="userDAO" class="com.dao.impl.UserDaoImpl">  </bean> <bean id="user2" class="com.dao.impl.UserDaoImpl">  </bean>  <bean id="userService" class="com.service.UserService">   </bean></beans>

service

package com.service;import javax.annotation.Resource;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import com.dao.UserDAO;import com.model.User;public class UserService {private UserDAO userDAO;  public void add(User user) {userDAO.saveMySql(user);}public UserDAO getUserDAO() {return userDAO;}/** * @Resource 默认使用userDAO * @Resource(name = "user2") * @param userDAO *///@Resource@Resource(name = "user2")public void setUserDAO(UserDAO userDAO) {this.userDAO = userDAO;}}

其他可参考前面的代码