使用JavaConfig代替xml实现Spring配置操作

package indi.stitch.pojo;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
@Component
public class User {
    private String name;
    public String getName() {
        return name;
    }
    @Value("Stitch")
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }
}

package indi.stitch.config;
import indi.stitch.pojo.User;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@ComponentScan("indi.stitch.pojo")
public class BeanConfig {
    @Bean
    public User getUser() {
        return new User();
    }
}

import indi.stitch.config.BeanConfig;
import indi.stitch.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new AnnotationConfigApplicationContext(BeanConfig.class);
        User user = context.getBean("getUser", User.class);
        System.out.println(user.getName());
    }
}

public class User {
    private String name;
    public String getName() {
        return name;
    }
    @Value("Juyss") //注入name属性的值
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }
}

@Configuration //表明此类为Spring配置类
public class SpringConfig {
    @Bean //返回一个实例,注册为一个Bean由Spring管理
    public User getUser(){
        return new User();
    }
}

public class ConfTest {
    @Test
    public void Test(){
        ApplicationContext context = new AnnotationConfigApplicationContext(SpringConfig.class);
        User user = context.getBean("getUser", User.class); //第一个参数需与方法名一致
        System.out.println(user);
    }
}

@Component //表明这个类注册为Bean组件
public class User {
    private String name;
    public String getName() {
        return name;
    }
    @Value("Juyss") //注入name属性的值
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                '}';
    }
}

@Configuration //表明为Spring配置类
@ComponentScan("com.juyss.pojo") //扫描此包下的所有已注册的Bean
public class SpringConfig {
}
ConfTest.java ( 测试类 )
public class ConfTest {
    @Test
    public void Test(){
        ApplicationContext context = new AnnotationConfigApplicationContext(SpringConfig.class);
        User user = context.getBean("user", User.class); //第一个参数为类名首字母小写
        System.out.println(user);
    }
}