@Data  //lombok省去get/set/toString
@ConfigurationProperties(prefix = "servers") //配置文件的位置，對(duì)應(yīng)的屬性注入
public class ServerConfig {
    private String ipAddress;
    private int port;
    private String detail;
//時(shí)間
    private Duration serverTimeOut;
//存儲(chǔ)空間
    private DataSize dataSize;
}

<!--        提供規(guī)范的接口-->
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
        </dependency>
<!--        對(duì)上面接口的實(shí)現(xiàn)-->
        <dependency>
            <groupId>org.hibernate.validator</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>

@Data  //lombok省去get/set/toString
//@Component //交給spring容器管理
@ConfigurationProperties(prefix = "servers") //配置文件的位置，對(duì)應(yīng)的屬性注入
//②開(kāi)啟校驗(yàn)
@Validated
public class ServerConfig {
    private String ipAddress;
//    ③設(shè)置校驗(yàn)規(guī)則
@Max(value=9000,message = "最大不能超過(guò)9000")
@Min(value=100,message = "最大不能低于100")
    private int port;
    private String detail;
    private Duration serverTimeOut;
    private DataSize dataSize;
}

package com;
import com.pojo.ServerConfig;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
@SpringBootTest
class Springboot11ConfigurationApplicationTests {
    @Value("${mysql.Password1}")
    private String password1;
    @Value("${mysql.Password2}")
    private String password2;
    @Value("${mysql.Password3}")
    private String password3;
    @Value("${mysql.Password4}")
    private String password4;
    @Test
    void contextLoads() {
        System.out.println(password1);
        System.out.println(password2);
        System.out.println(password3);
        System.out.println(password4);
    }
}