java Spring 基于注解的配置（一）

注解引用：1.service.xml 配置注解模式

<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

<!--将针对注解的处理器配置好  -->
<context:annotation-config />

<context:component-scan base-package="*.*"/>
</beans>

2.UserService.java

使用@Service 命名该类的name

使用@Controller("userService") 效果也是一样

如果单使用@Controller 那么命名就只能用userService 这样的驼峰

package com.sun.service;

import java.util.ArrayList;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service("userservice")
public class UserService {
private String name;
private ArrayList arr;
public ArrayList getArr() {
return arr;
}
public void setArr(ArrayList arr) {
this.arr = arr;
}
public UserService(){
System.out.println("this is chushihua");
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void init(){
System.out.println("init------------");
}
public void cleanup(){
System.out.println("cleanup------------");
}

}

3.HelloWorld.java

package com.sun.service;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class HelloWorld {

public static void main(String[] args) {
// TODO Auto-generated method stub
AbstractApplicationContext app = new ClassPathXmlApplicationContext("service.xml");
UserService us  = (UserService) app.getBean("userservice");
us.setName("Hello World");
System.out.println(us.getName());
//us.setName("sunzhiyan");
/*System.out.println(us.getName());
for(int i = 0;i < us.getArr().size();i++){
System.out.println(us.getArr().get(i));
}
app.registerShutdownHook();*/

}

}

这样能够进行输出。