https://pkg.go.dev/github.com/go-playground/validator/v10#readme-baked-in-validations

• min 最小
• max 最大
• len 长度限制
• gt 大于
• eq 等于
• ne 不等于
• eqfield 与某个字段值一样
• nefield 与某个字段值不一样

package mainimport ("net/http""github.com/gin-gonic/gin"
)type UserInfo struct {UserName  string `json:"username" binding:"required,min=4,max=6"`Age       int    `json:"age" binding:"gt=18,lte=120"`Password  string `json:"password" binding:"required"`Password2 string `json:"password2" binding:"required,eqfield=Password"`
}// 结构体中写json
func validation(c *gin.Context) {var user UserInfoerr := c.ShouldBindJSON(&user)if err != nil {c.JSON(http.StatusBadRequest, gin.H{"msg": err.Error()})} else {c.JSON(http.StatusOK, user)}
}func main() {router := gin.Default()router.POST("/validation", validation)router.Run("localhost:9999")
}