功能

在spring-boot項目啟動時，將會打印項目的基本信息：服務(wù)名稱，pom中的項目版本，以及jar包構(gòu)建的時間,方便檢測服務(wù)是否更新到正確的版本，也可以提供接口訪問

實現(xiàn)步驟(steps 2)

step 1 添加服務(wù)啟動的前置執(zhí)行代碼

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

import javax.annotation.PostConstruct;

/**
 * 初始化bean之前執(zhí)行即服務(wù)啟動的前置代碼
 */
@Configuration
@Slf4j
public class BeanPostConfig implements BeanPostProcessor {
    @Value("${project.version}")
    private String serviceVersion;
    @Value("${project.builddate}")
    private String serviceBuildDate;
    @Value("${spring.application.name}")
    private String serviceName;

    @Autowired
    private Environment environment;

    @PostConstruct
    public void  projectInfo(){
        StringBuffer projectInfo = new StringBuffer();
        projectInfo.append("\n=================project=================\n");
        projectInfo.append(String.format("\nservice name:%s\n",serviceName));
        projectInfo.append(String.format("\nservice version:%s\n",serviceVersion));
        projectInfo.append(String.format("\nservice build date:%s\n",serviceBuildDate));
        projectInfo.append("\n=================project=================\n");
        log.info(projectInfo.toString());

    }

}

step 2 application.yml配置變量

project:
  version: @project.version@
  builddate: @maven.build.timestamp@

注意獲取maven的變量是使用@@，并且在@Value中使用@@是無效的,bootstrap.yml也無效,具體原理以后在了解一下