Spring通过java注解的方式进行配置annotation

摘要: Spring通过java注解的方式进行配置

1.TestAnnotation.java

package com.huangliusong.spring.annotation;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.huangliusong.spring.annotation.controller.UserController;
import com.huangliusong.spring.annotation.respository.UserResponsitory;

public class TestAnnotation {
@Test
public void test1(){
ApplicationContext ctx=new ClassPathXmlApplicationContext("bean_annotation.xml");
TestObject to=(TestObject) ctx.getBean("testObject");
System.out.println(to);

UserController uc=(UserController) ctx.getBean("userController");
System.out.println(uc);

UserResponsitory ur=(UserResponsitory) ctx.getBean("userResponsitory");
System.out.println(ur);
}
}

2.TestObject.java

package com.huangliusong.spring.annotation;

import org.springframework.stereotype.Component;

@Component
public class TestObject {

}

3.UserController.java

package com.huangliusong.spring.annotation.controller;

import org.springframework.stereotype.Controller;

@Controller
public class UserController {
public void execute(){
System.out.println("UserController execute()...");
}
}

4.UserResponsitory.java

package com.huangliusong.spring.annotation.respository;

public interface UserResponsitory {
void save();
}

5.UserResponsitoryImpl.java

package com.huangliusong.spring.annotation.respository;

import org.springframework.stereotype.Repository;

//指定bean的value名
@Repository("userResponsitory")
public class UserResponsitoryImpl implements UserResponsitory{

@Override
public void save() {
System.err.println("UserResponsitoryImpl >>save..");

}

}

6.UserService.java

package com.huangliusong.spring.annotation.service;

import org.springframework.stereotype.Service;

@Service
public class UserService {
public void add(){
System.out.println("UserService add..");
}
}

输出

log4j:WARN No appenders could be found for logger (org.springframework.core.env.StandardEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
com.huangliusong.spring.annotation.TestObject@46496daa
com.huangliusong.spring.annotation.controller.UserController@7ebed7f2
com.huangliusong.spring.annotation.respository.UserResponsitoryImpl@235391e0