package param type User struct { Username string `json:"username" binding:"required,lte=50"` Nickname string `json:"nickname" binding:"required,lte=255"` Email string `json:"email" binding:"required,email,lte=127"` Password string `json:"password"` Avatar string `json:"avatar" binding:"lte=1023"` Description string `json:"description" binding:"lte=1023"` }