一，安装第三方库:
$ go get -u github.com/go-playground/validator/v10
go: downloading github.com/go-playground/validator/v10 v10.24.0
go: downloading github.com/gabriel-vasile/mimetype v1.4.8
go: downloading golang.org/x/crypto v0.32.0
go: downloading golang.org/x/net v0.34.0
go: upgraded github.com/gabriel-vasile/mimetype v1.4.3 => v1.4.8
go: upgraded github.com/go-playground/validator/v10 v10.20.0 => v10.24.0
go: upgraded golang.org/x/crypto v0.23.0 => v0.32.0
go: upgraded golang.org/x/net v0.25.0 => v0.34.0
go: upgraded golang.org/x/sys v0.20.0 => v0.29.0
go: upgraded golang.org/x/text v0.15.0 => v0.21.0
二，校验get参数
代码:
//请求参数struct
type ImageListRequest struct {Cid int `form:"cid" json:"cid" binding:"required,gte=1,lte=100"`Category string `form:"category" json:"category" binding:"required,min=2,max=10"`
}//得到列表
func (ic *ImageController) List(c *gin.Context) {var req ImageListRequestif err := c.ShouldBindQuery(&req); err != nil {c.JSON(http.StatusOK, gin.H{"msg": err.Error(),})return}fmt.Println("cid:",req.Cid)fmt.Println("category:",req.Category)c.JSON(http.StatusOK, gin.H{"message": "image list",})
}测试效果:参数不合法
参数合法
三，校验post参数
//请求参数struct
type ImageAddRequest struct {Cid int `form:"cid" json:"cid" binding:"required,gte=1,lte=100"`Title string `form:"title" json:"title" binding:"required,min=2"`
}//添加一条
func (ic *ImageController) Add(c *gin.Context) {var req ImageAddRequestif err := c.ShouldBind(&req); err != nil {c.JSON(http.StatusOK, gin.H{"msg": err.Error(),})return}fmt.Println("cid:",req.Cid)fmt.Println("title:",req.Title)//返回c.JSON(http.StatusOK, gin.H{"message": "image detail",})
}
测试效果：
合法时
