Spring Boot配置文件.md

Spring Boot属性配置文件：application.yml

格式：

server:
  port: 8080
girl:
  cupSize: B
  age: 18
cupSize: C

类中读取配置中属性的方法：

1、单一属性直接读取：

server:
  port: 8080
cupSize: B
age: 18
content: "cupSize: ${cupSize}, age: ${age}"

@value("${cupSize}")

private String cupSize;(属性为Integer时String改为Integer)

2、多属性读取：

server:
  port: 8080
cupSize: B
age: 18
content: "cupSize: ${cupSize}, age: ${age}"

@Value("${content}")
private String content;

@RequestMapping(value = "/hello", method = RequestMethod.GET)
public String say() {
    return content;
}

3、对象属性读取：

server:
  port: 8080
girl:
  cupSize: B
  age: 18

首先创建一个Girlproperties.class

package com.hytxwz.girl;

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

@Repository("girlProperties")
@ConfigurationProperties(prefix = "girl")
public class GirlProperties {

    private String cupSize;
    private Integer age;

    public String getCupSize() {
        return cupSize;
    }

    public void setCupSize(String cupSize) {
        this.cupSize = cupSize;
    }

    public Integer getAge() {
        return age;
    }

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

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

读取数据的方法：

@Resource(name = "girlProperties")
private GirlProperties girlProperties;

@RequestMapping(value = "/hello", method = RequestMethod.GET)
public GirlProperties say() {
    return girlProperties;
}

选用配置文件的方法：

application.yml中：

spring:
  profiles:
    active: dev

此时选用的就是application-dev.yml配置文件。