更新前后端代码

go/internal/middleware/cors.go

@@ -0,0 +1,27 @@
+package middleware
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// CORS 跨域中间件
+func CORS() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		origin := c.GetHeader("Origin")
+		if origin != "" {
+			c.Header("Access-Control-Allow-Origin", origin)
+			c.Header("Access-Control-Allow-Credentials", "true")
+			c.Header("Access-Control-Allow-Headers",
+				"Origin, Content-Type, Accept, Authorization, X-Access-Key, X-Timestamp, X-Nonce, X-Signature, X-Request-Id")
+			c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, PATCH")
+			c.Header("Access-Control-Max-Age", "86400")
+		}
+		if c.Request.Method == http.MethodOptions {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+		c.Next()
+	}
+}