GolangWeb项目异常捕获与日志记录

func RecoverMiddleware(next http.Handler) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        defer func() {
            if err := recover(); err != nil {
                // 输出堆栈信息便于定位
                log.Printf("Panic recovered: %v\n", err)
                stack := make([]byte, 1024)
                runtime.Stack(stack, false)
                log.Printf("Stack trace: %s", stack)

                http.Error(w, "Internal Server Error", http.StatusInternalServerError)
            }
        }()
        next.ServeHTTP(w, r)
    })
}

http.Handle("/api/", RecoverMiddleware(yourHandler))
log.Fatal(http.ListenAndServe(":8080", nil))

logger, _ := zap.NewProduction()
defer logger.Sync() // flushes buffer, if any

// 在处理函数中记录信息
logger.Info("Handling request",
    zap.String("method", r.Method),
    zap.String("url", r.URL.String()),
    zap.String("remote_addr", r.RemoteAddr),
)

func TraceIDMiddleware(next http.Handler) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        traceID := uuid.New().String() // 使用github.com/google/uuid
        ctx := context.WithValue(r.Context(), "trace_id", traceID)
        r = r.WithContext(ctx)

        logger.Info("Request started",
            zap.String("trace_id", traceID),
            zap.String("method", r.Method),
            zap.String("path", r.URL.Path),
        )
        next.ServeHTTP(w, r)
    })
}

traceID := r.Context().Value("trace_id").(string)
logger.Info("Processing data", zap.String("trace_id", traceID))