springBoot读取yml配置文件

pom.xml配置

在pom文件中我们加上配置文件加载器

            org.springframework.boot
            spring-boot-configuration-processor
            true
 

读取类配置

package com.hanlin.springboot.bean;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * @author：hanlin.yuan
 * @date：2019/05/30
 */
@Component
@ConfigurationProperties(prefix = "student")
public class Student {

    private String name ;

    private Integer age;


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

注意@ConfigurationProperties其中的prefix是只的读取配置文件中的对象名称

application.yml配置文件

student:
  age: 18
  name: 张三

注意：yml配置中，对象名称后面一定要有空格：列如：age:(空格)18

测试类

package com.hanlin.springboot;

import com.hanlin.springboot.bean.Student;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBootDemo01ApplicationTests {

    @Autowired
    private Student student;


    @Test
    public void contextLoads() {
        System.out.println(student);
    }

}

测试结果：