yaml配置 yaml配置文件application.properties语法结构：key=valueapplication.yaml语法结构：key：空格 valueyamlYAML是"YAML Ain't a Markup Language"（YAML不是一种标记语言）的递归缩写。基本语法：# k=v name: test #对象 student: name: test age: 3 #行内写法 student1: {name: test,age: 3} #数组 students: -test1 -test2 -test3 students1: [test1,test2,test3]注入配置文件1、导入配置文件的依赖<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional> </dependency>2、yaml配置文件person: name: test age: 3 happy: false birth: 2020/12/22 map: {k: v,k1: v1} list: -code -girl dog: name: test age: 33、实体类package com.sw.pojo; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; import java.util.Date; import java.util.List; import java.util.Map; /** * @Author suaxi * @Date 2020/12/22 10:38 */ @Data @AllArgsConstructor @NoArgsConstructor @Component //注册Bean @ConfigurationProperties(prefix = "person") public class Person { private String name; private int age; private Boolean happy; private Date birth; private Map<String,Object> map; private List<Object> list; private Dog dog; } @ConfigurationProperties的作用：将配置文件中配置的每一个属性的值，映射到这个组件中，参数prefix = "person"，将配置文件中person下的所有属性一一对应补充：通过properties注入属性@PropertySource(value = "classpath:application.properties")properties与yaml对比 @ConfigurationProperties@value功能批量注入配置文件中的属性需单个一一指定松散绑定是否SPEL表达式否是JSR303校验是否复杂类型封装是否松散绑定：yaml中写的是last-name，实体类中写的是lastName，值依然能注入，yaml中 - 后面的第一个字母默认大写JSR303校验：JSR是Java Specification Requests的缩写，意思是Java 规范提案。使用时须在实体类前加上注解 @Validated //JSR303校验