java SpringBoot（五）yml配置文件使用

骑猪看日落 2022-10-22 13:52 232阅读 0赞

SpringBoot的配置文件默认是application.properties

这次记录一下application.yml的用法（优先级好像是properties，貌似是先加载的为主，具体建议百度，但是两个文件都会兼容并配置）

首先创建两个测试类

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzcxNTY3_size_16_color_FFFFFF_t_70][]

Person代码

package com.example.demo.bean;
    
    import lombok.Data;
    import lombok.ToString;
    import org.springframework.boot.context.properties.ConfigurationProperties;
    import org.springframework.stereotype.Component;
    
    import java.util.Date;
    import java.util.List;
    import java.util.Map;
    import java.util.Set;
    
    @Data
    @ToString
    @Component
    @ConfigurationProperties(prefix = "person")
    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;
    }

Pet代码

package com.example.demo.bean;
    
    import lombok.Data;
    import lombok.ToString;
    
    @Data
    @ToString
    public class Pet {
        private String name;
        private Double weight;
    }

在resources下边新建application.yml文件，编写

person:
      userName: zhangsan
      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}
      salarys:
        - 9999
        - 9998
      pet:
        name: 阿狗
        weight: 99.99
      allPets:
        sick:
          - {name: 阿狗, weight: 99.99}
          - name: 阿猫
            weight: 88.88
          - name: 啊虫
            weight: 77.77
        health:
          - {name: 阿花, weight: 99.99}
          - {name: 阿狸, weight: 99.99}

测试并使用，在controller中编写

package com.example.demo.controller;
    
    import com.example.demo.bean.Person;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @Slf4j //lombok日志功能
    @RestController
    public class MyController {
        @RequestMapping("/index")
        public String hand1(){
            log.info("收到请求");
            return "hello";
        }
    
        @Autowired
        Person person; //使用person组件
    
        @RequestMapping("/person")
        public Person person(){
    
            return person;
        }
    }

然后运行项目，访问person

![20210317160447466.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzcxNTY3_size_16_color_FFFFFF_t_70]: /images/20221022/5661006a54e5462a910c7cffd4627a96.png
[20210317160447466.png]: /images/20221022/a07204c0222e46b9a95229317d2069f8.png