springboot 配置文件-yaml的用法04、配置文件1、文件类型2、配置提示

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我是靠谱客的博主长情小鸽子，最近开发中收集的这篇文章主要介绍springboot 配置文件-yaml的用法04、配置文件1、文件类型2、配置提示，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

04、配置文件

1、文件类型

1.1、properties

同以前的properties用法

1.2、yaml

1.2.1、简介

YAML 是 “YAML Ain’t Markup Language”（YAML 不是一种标记语言）的递归缩写。在开发的这种语言时，YAML 的意思其实是：“Yet Another Markup Language”（仍是一种标记语言）。

非常适合用来做以数据为中心的配置文件

1.2.2、基本语法

key: value；kv之间有空格
大小写敏感
使用缩进表示层级关系
缩进不允许使用tab，只允许空格
缩进的空格数不重要，只要相同层级的元素左对齐即可
'#'表示注释
字符串无需加引号，如果要加，’'与""表示字符串内容会被转义/不转义

1.2.3、数据类型

字面量：单个的、不可再分的值。date、boolean、string、number、null

k: v

对象：键值对的集合。map、hash、set、object

行内写法：
k: {k1:v1,k2:v2,k3:v3}
#或
k:
k1: v1
k2: v2
k3: v3

数组：一组按次序排列的值。array、list、queue

行内写法：
k: [v1,v2,v3]
#或者
k:
- v1
- v2
- v3

1.2.4、示例

@Data
public class Person {
private String userName;
private Boolean boss;
private Date birth;
private Integer age;
private Pet pet;
private String[] interests;
private List<String> animal;
private Map<String, Object> score;
private Set<Double> salarys;
private Map<String, List<Pet>> allPets;
}
@Data
public class Pet {
private String name;
private Double weight;
}

# yaml表示以上对象
person:
userName: zhangsan
boss: false
birth: 2019/12/12 20:12:33
age: 18
pet:
name: tomcat
weight: 23.4
interests: [篮球,游泳]
animal:
- jerry
- mario
score:
english:
first: 30
second: 40
third: 50
math: [131,140,148]
chinese: {first: 128,second: 136}
salarys: [3999,4999.98,5999.99]
allPets:
sick:
- {name: tom}
- {name: jerry,weight: 47}
health: [{name: mario,weight: 47}]

2、配置提示

自定义的类和配置文件绑定一般没有提示。


<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>

person:
#
单引号会将 n作为字符串输出
双引号会将n 作为换行输出
#
双引号不会转义，单引号会转义
boss: true
birth: 2019/12/9
age: 18
#
interests: [篮球,足球]
interests:
- 篮球
- 足球
- 18
animal: [阿猫,阿狗]
#
score:
#
english: 80
#
math: 90
score: {english:80,math:90}
salarys:
- 9999.98
- 9999.99
pet:
name: 阿狗
weight: 99.99
allPets:
sick:
- {name: 阿狗,weight: 99.99}
- name: 阿猫
weight: 88.88
- name: 阿虫
weight: 77.77
health:
- {name: 阿花,weight: 199.99}
- {name: 阿明,weight: 199.99}
user-name: zhangsan
#spring:
#
banner:
#
image:
#
bitdepth: 4
#
cache:
#
type: redis
#
redis:
#
time-to-live: 11000

import lombok.Data;
import lombok.ToString;
@ToString
@Data
public class Pet {
private String name;
private Double weight;
}

控制层


import com.atguigu.boot.bean.Person;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@Autowired
Person person;
@RequestMapping("/person")
public Person person(){
String userName = person.getUserName();
System.out.println(userName);
return person;
}
}

启动类

package com.test.springboot.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringbootHelloworld2Application {
public static void main(String[] args) {
SpringApplication.run(SpringbootHelloworld2Application.class, args);
}
}

输出结果

{"userName":"zhangsan","boss":true,"birth":"2020-12-02T16:00:00.000+00:00","age":18,"pet":{"name":"安居昂","weight":99.89},"interests":["篮球","足球","读书"],"animal":["猫","狗","老虎"],"score":{"chinese98":"","physics90":"","chemistry88":"","politics79":"","hostory88":""},"salarys":[5000.0,888.0],"allPets":{"sick":[{"name":"cat","weight":58.0},{"name":"pig","weight":120.0}],"heakth":[{"name":"dog","weight":122.0}]}}