SpringBoot獲得Maven-pom中版本號和編譯時間戳詳細步驟

簡介：為了在專案變更版本時檢視是否變更成功   &  檢視專案編譯時間

1、在pom檔案中新增：

<properties>
        <!--maven.build.timestamp儲存了maven編譯時間戳-->
        <timestamp>${maven.build.timestamp}</timestamp>
        <!--指定時間格式-->
        <maven.build.timestamp.format>yyyy-MM-dd HH:mm:ss</maven.build.timestamp.format>
</properties>


<build>中新增以下內容：


<build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
        </resources>

</build>

2、application.properties中新增：【注意：是@@，不是${}】

app.version = @project.version@
app.build.time = @timestamp@

3、新增一個配置類
【注意：我們所處的時區為東八區，預設列印時間為東零區，需要加8個小時】

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

import javax.annotation.PostConstruct;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 專案啟動日誌：列印專案版本和構建時間
 */
@Configuration
@Slf4j
public class BeanPostConfig implements BeanPostProcessor {
    // 當前版本
    @Value("${app.version}")
    private String serviceVersion;
    // 打包時間
    @Value("${app.build.time}")
    private String serviceBuildDate;

    @PostConstruct
    public void projectInfo(){
        StringBuffer projectInfo = new StringBuffer();
        projectInfo.append("\n=================project=================\n");
        projectInfo.append(String.format("\nservice version:%s\n",serviceVersion));
        String timestamps = formatTimeHours(serviceBuildDate, 8);
        projectInfo.append(String.format("\nservice build date:%s\n",timestamps));
        projectInfo.append("\n=================project=================\n");
        log.info(projectInfo.toString());

    }

    /**
     * 將時間轉換為東八區時區，預設為東0區
     *
     * @param time
     * @param hours
     * @return
     */
    public String formatTimeHours(String time, int hours) {
        try {
            SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date d = sd.parse(time);
            long rightTime = (long) (d.getTime() + hours * 60 * 60 * 1000);
            String newtime = sd.format(rightTime);
            return newtime;
        } catch (Exception e) {
            log.warn("-------系統時間轉化出現異常--------");
            return null;
        }
    }
}

輸出日誌為：