关于如何处理gin框架前端请求跨域

// Cors 跨域
func Cors() gin.HandlerFunc {
   return func(c *gin.Context) {
      if c.Request.Header.Get("Origin") != "" {
         c.Header("Access-Control-Allow-Origin", "*") // 可将将 * 替换为指定的域名
         c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE, UPDATE")
         c.Header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization")
         c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Cache-Control, Content-Language, Content-Type")
         c.Header("Access-Control-Allow-Credentials", "true")
         c.Set("content-type", "application/json")
      }
  if c.Request.Method == http.MethodOptions {
     c.AbortWithStatus(http.StatusNoContent)
  }
  c.Next()

}
}

func main() {

r := gin.Default()

// 中间件 处理跨域

r.Use(middlewares.Cors())

port := config.Config.Server.Port

if port != "" {

panic(r.Run(":" + port))

}

r.Run(config.Config.Server.Port) // listen and serve on 0.0.0.0:8080

}