日誌打印追蹤

創建過濾器

@Component
@WebFilter(urlPatterns = "/*", filterName = "logMdcFilter")
public class LogMdcFilter implements Filter {

    @Value("${log.traceId}")
    private String  traceId;

    private static String UNIQUE_ID;

    @Override
    public void init(FilterConfig filterConfig) {
        UNIQUE_ID = traceId;
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        boolean bInsertMDC = insertMDC();
        try {
            chain.doFilter(request, response);
        } finally {
            if (bInsertMDC) {
                MDC.remove(UNIQUE_ID);
            }
        }
    }

    @Override
    public void destroy() {
    }

    private boolean insertMDC() {
        UUID uuid = UUID.randomUUID();
        String uniqueId = uuid.toString().replace("-", "");
        MDC.put(UNIQUE_ID, uniqueId);
        return true;
    }
}

 配置文件

#日誌唯一id
log.traceId=traceId

 日誌打印格式

<Pattern>%d{yyyy-MM-dd HH:mm:ss} job [%thread] [%X{traceId}] %level %logger{35} - %msg%n</Pattern>

 大家可以嘗試一下。