使用java方式配置spring_jdk.nashorn.internal.objects.annotations.construct

1.创建实体类：User

package com.huahua.pojo;
 
import jdk.nashorn.internal.objects.annotations.Constructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
 
import java.beans.ConstructorProperties;
 
//这个注解的意思，就是说这个类被spring接管，注册到了容器中
@Component
public class User {
    @Value("123")
    private String name;
    @Value("23")
    private int age;
 
    public User() {
        
    }
 
 
    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
 
    public User(String name, int age) {
        this.name = name;
        this.age = age;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public int getAge() {
        return age;
    }
 
    public void setAge(int age) {
        this.age = age;
    }
}

2.创建配置类：

package com.huahua.config;
 
import com.huahua.pojo.User;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
//@Configuration 代表这是一个配置类
@Configuration
@ComponentScan("com.huahua")//扫描包下面的注释
public class Config {
     //注册一个bean  相当于一个bean标签
    //这个方法的名字   这个bean的id
    //这个方法的返回值   就是bean的class
    @Bean
    public User getUser(){
        return  new User();
    }
 
}

2.创建测试类：

package com.huahua;
 
import com.huahua.config.Config;
import com.huahua.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 
public class MyTest {
      @Test
      public void test(){
        ApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
        User getUser = context.getBean("getUser", User.class);
        System.out.println(getUser.toString());
    }
}