func Cors(c *gin.Context) {    c.Header("Access-Control-Allow-Origin", "*")    c.Header("Access-Control-Allow-Headers", "Content-Type,AccessToken,X-CSRF-Token, Authorization, Token")    c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, PATCH, DELETE")    c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")    c.Header("Access-Control-Allow-Credentials", "true")    //这里是解决vue那个坑    method := c.Request.Method    // 放行所有OPTIONS方法，因为有的模板是要请求两次的    if method == "OPTIONS" {        c.AbortWithStatus(http.StatusNoContent)    }    // 处理请求    c.Next()}