java读取配置文件中的相关属性

1.添加依赖项，然后重启项目才生效。可有可无

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <version>2.1.7.RELEASE</version>
    <optional>true</optional>
</dependency>

2.配置文件相关属性

#配置线程池
gulimall.thread.coreSize=20
gulimall.thread.maxSize=200
gulimall.thread.keepAliveTime=10

3.读取配置文件相关属性

@ConfigurationProperties(prefix = "gulimall.thread")
// @Component
@Data
public class ThreadPoolConfigProperties {

    private Integer coreSize;

    private Integer maxSize;

    private Integer keepAliveTime;

}