cors.go: fix部分浏览器不支持*的格式

Author: 汪先森

server/middleware/cors.go

@@ -9,7 +9,8 @@ import (
 func Cors() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		method := c.Request.Method
-		c.Header("Access-Control-Allow-Origin", "*")
+		origin := c.Request.Header.Get("Origin")
+		c.Header("Access-Control-Allow-Origin", origin)
 		c.Header("Access-Control-Allow-Headers", "Content-Type,AccessToken,X-CSRF-Token, Authorization, Token,X-Token,X-User-Id\"")
 		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS,DELETE,PUT")
 		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")