springBoot讀取yml配置檔案

springBoot讀取配置檔案

• pom.xml配置

pom.xml配置

在pom檔案中我們加上配置檔案加載器

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
 </dependency>
           

讀取類配置

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是隻的讀取配置檔案中的對象名稱

application.yml配置檔案

student:
  age: 18
  name: 張三

           

注意：yml配置中，對象名稱後面一定要有空格：列如：age:(空格)18

測試類

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);
    }

}

           

測試結果：