fix

backend-old/internal/api/middleware/cors.go

@@ -0,0 +1,58 @@
+package middleware
+
+import (
+	"net/http"
+	"github.com/gin-gonic/gin"
+	"photography-backend/internal/config"
+)
+
+// CORSMiddleware CORS中间件
+func CORSMiddleware(cfg *config.CORSConfig) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		origin := c.GetHeader("Origin")
+		
+		// 检查是否允许的来源
+		allowed := false
+		for _, allowedOrigin := range cfg.AllowedOrigins {
+			if allowedOrigin == "*" || allowedOrigin == origin {
+				allowed = true
+				break
+			}
+		}
+		
+		if allowed {
+			c.Header("Access-Control-Allow-Origin", origin)
+		}
+		
+		// 设置其他CORS头
+		c.Header("Access-Control-Allow-Methods", joinStrings(cfg.AllowedMethods, ", "))
+		c.Header("Access-Control-Allow-Headers", joinStrings(cfg.AllowedHeaders, ", "))
+		c.Header("Access-Control-Max-Age", "86400")
+		
+		if cfg.AllowCredentials {
+			c.Header("Access-Control-Allow-Credentials", "true")
+		}
+		
+		// 处理预检请求
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+		
+		c.Next()
+	}
+}
+
+// joinStrings 连接字符串数组
+func joinStrings(strs []string, sep string) string {
+	if len(strs) == 0 {
+		return ""
+	}
+	
+	result := strs[0]
+	for i := 1; i < len(strs); i++ {
+		result += sep + strs[i]
+	}
+	
+	return result
+}