文件配置

　　为了让 Spring Boot 更好的生成配置元数据文件，需要添加如下依赖

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

　　application.yml

person:
  address: 上海
  name: Jack

      Person：使用时注入属性即可

package com.smart.boot_mybatis.domain;

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

@Component
@ConfigurationProperties(prefix="person")
public class Person {
    private String name;
    private String address;

    public String getName() {
        return name;
    }

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

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

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

　　自定义配置文件

       在Resources文件路径中，增加person.properties

person.address=china
person.name=Jim

　　

package com.smart.boot_mybatis.domain;

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

@Component
@PropertySource("classpath:person.properties")
@ConfigurationProperties(prefix="person")
public class Person {
    private String name;
    private String address;

    public String getName() {
        return name;
    }

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

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

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

springboot 启动会扫描以下位置的application.properties或者application.yml文件作为Spring boot的默认配置文件
–file:./config/
–file:./
–classpath:/config/
–classpath:/
优先级由高到底，高优先级的配置会覆盖低优先级的配置；可以通过spring.config.location来改变默认的配置文件位置

项目打包好以后，可以使用命令行参数的形式，启动项目的时候来指定配置文件的新位置；指定配置文件和默认加载的这些配置文件共同起作用形成互补配置；
java -jar boot-SNAPSHOT.jar --spring.config.location=D:/application.properties