10000*365=27.3972603

0%

Java YAML

Posted on Edited on

配置Demo

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family:
  family-name: "happy family"
  father:
    name: zimug
    age: ${random.int}
  mother:
    alias:
      - lovely
      - ailice
  child:
    name: ${family.father.name:zimug2}
    age: 5
    friends:
      - hobby: football
        sex:  male
      - hobby: basketball
        sex: female

YAML配置绑定变量两种方式

  • 通过@Value注解将family.family-name属性的值绑定到familyName成员变量上面。

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    @Data
    @Component
    public class Family {
        @Value("${family.family-name}")
        private String familyName;
    }

  • 使用@ConfigurationProperties获取配置值

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//   1. 一个家庭有爸爸、妈妈、孩子。
//   2. 这个家庭有一个名字（family-name）叫做“happy family”
@Data
@Component
@ConfigurationProperties(prefix = "family")   //表示配置的整体前缀
public class Family {

    private String familyName;   //成员变量名称要和yml配置项key一一对应
    private Father father;
    private Mother mother;
    private Child child;
}


// 3. 爸爸有名字(name)和年龄（age）两个属性
@Data
public class Father {
    private String name;
    private Integer age;
}



//  4. 妈妈有两个别名
@Data
public class Mother {
    private String[] alias;
}


//5. 孩子除了名字(name)和年龄（age）两个属性，还有一个friends的集合
@Data
public class Child {
    private String name;
    private Integer age;
    private List<Friend> friends;
}


//  6. 每个friend有两个属性：hobby(爱好)和性别(sex)
@Data
public class Friend {
    private String hobby;
    private String sex;
}

对配置数值进行校验

  • 在需要校验的属性装配类上加@Validated注解

  • 校验父亲的年龄，必须大于21岁

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    public class Father {
        private String name;
        @Min(21)
        private Integer age;
    }

  • 校验familyName，必须不能为空

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    @NotEmpty
    private String familyName;

  • 针对Family的属性校验，只需要写一个测试类，将Family类注入就可以。

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@ExtendWith(SpringExtension.class)  //Junit5
@SpringBootTest
public class CustomYamlTest {
    @Resource
    Family family;

    @Test
    public void hello(){
        System.out.println(family.toString());
    }
}
  • 其他参考例子：
  • @size (min=6, max=20, message=”密码长度只能在6-20之间”)
  • @pattern (regexp=”[a-za-z0-9._%+-]+@[a-za-z0-9.-]+.[a-za-z]{2,4}”, message=”请输入正确的邮件格式”)
  • @Length(min = 5, max = 20, message = “用户名长度必须位于5到20之间”)
  • @Email(message = “请输入正确的邮箱”)
  • @NotNull(message = “用户名称不能为空”)
  • @Max(value = 100, message = “年龄不能大于100岁”)
  • @Min(value= 18 ,message= “必须年满18岁！” )
  • @AssertTrue(message = “bln4 must is true”)
  • @AssertFalse(message = “blnf must is falase”)
  • @DecimalMax(value=”100”,message=”decim最大值是100”)
  • @DecimalMin(value=”100”,message=”decim最小值是100”)
  • @NotNull(message = “身份证不能为空”)
  • @Pattern(regexp=”^(\d{18,18}|\d{15,15}|(\d{17,17}[x|X]))$”, message=”身份证格式错误”)

加载额外配置文件（老旧项目文件）

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