第 0 阶段：项目初始化

backend/cmd/api/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"context"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"hfb_sys/backend/internal/config"
+	"hfb_sys/backend/internal/router"
+
+	"go.uber.org/zap"
+)
+
+func main() {
+	cfg := config.Load()
+	logger, err := zap.NewProduction()
+	if cfg.AppEnv == "development" {
+		logger, err = zap.NewDevelopment()
+	}
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		_ = logger.Sync()
+	}()
+
+	engine := router.New(cfg, logger)
+	server := &http.Server{
+		Addr:              cfg.AppAddr,
+		Handler:           engine,
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	go func() {
+		logger.Info("api server starting", zap.String("addr", cfg.AppAddr))
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			logger.Fatal("api server failed", zap.Error(err))
+		}
+	}()
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	if err := server.Shutdown(ctx); err != nil {
+		logger.Fatal("api server shutdown failed", zap.Error(err))
+	}
+	logger.Info("api server stopped")
+}