springBoot读取配置文件

• pom.xml配置

pom.xml配置

在pom文件中我们加上配置文件加载器

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

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：