重构后端服务架构并优化前端错误处理

go-backend/middleware/auth.go

@@ -0,0 +1,45 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+
+	"niumall-go/utils"
+)
+
+// AuthMiddleware authenticates requests using JWT
+func AuthMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		// Get authorization header
+		authHeader := c.GetHeader("Authorization")
+		if authHeader == "" {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})
+			c.Abort()
+			return
+		}
+
+		// Check if header has Bearer prefix
+		if !strings.HasPrefix(authHeader, "Bearer ") {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid authorization header format"})
+			c.Abort()
+			return
+		}
+
+		// Extract token
+		tokenString := strings.TrimPrefix(authHeader, "Bearer ")
+
+		// Parse and validate token
+		claims, err := utils.ParseJWT(tokenString)
+		if err != nil {
+			c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid or expired token"})
+			c.Abort()
+			return
+		}
+
+		// Set user UUID in context for use in handlers
+		c.Set("user_uuid", claims.UUID)
+		c.Next()
+	}
+}