使用annotation
首先 xml文件更改 新加xslt
<?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-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<context:annotation-config />
<bean id="u" class="com.bjsxt.dao.impl.UserDAOImpl">
</bean>
<bean id="u2" class="com.bjsxt.dao.impl.UserDAOImpl">
</bean> <bean id="userService" class="com.bjsxt.service.UserService" > </bean> </beans>
UserService.java
package com.bjsxt.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier; import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User; public class UserService { private UserDAO userDAO; public void init() {
System.out.println("init");
} public void add(User user) {
userDAO.save(user);
}
public UserDAO getUserDAO() {
return userDAO;
} @Autowired
public void setUserDAO(@Qualifier("u") UserDAO userDAO) {
this.userDAO = userDAO;
} public void destroy() {
System.out.println("destroy");
}
}
@Autowired 默认是执行bytype的 如果出现多个 可以使用 @qualifier 指定
Resourse
引入j2ee的annotion-common包
package com.bjsxt.service;
import javax.annotation.Resource; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier; import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User; public class UserService { private UserDAO userDAO; public void init() {
System.out.println("init");
} public void add(User user) {
userDAO.save(user);
}
public UserDAO getUserDAO() {
return userDAO;
} @Resource
public void setUserDAO( UserDAO userDAO) {
this.userDAO = userDAO;
} public void destroy() {
System.out.println("destroy");
}
}
beans.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-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<context:annotation-config />
<bean id="userDAO" class="com.bjsxt.dao.impl.UserDAOImpl">
</bean>
<bean id="u2" class="com.bjsxt.dao.impl.UserDAOImpl">
</bean> <bean id="userService" class="com.bjsxt.service.UserService" > </bean> </beans>
test
package com.bjsxt.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; import com.bjsxt.model.User; //Dependency Injection
//Inverse of Control
public class UserServiceTest { @Test
public void testAdd() throws Exception {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml"); UserService service = (UserService)ctx.getBean("userService");
service.add(new User()); ctx.destroy(); } }