go语言web开发系列之三:gin用go-playground/validator做参数的校验
一,演示项目的相关信息
1,项目地址:
https://github.com/liuhongdi/digv03
2,功能说明:使用校验器(validator)实现对参数的校验
3,项目结构:如图:
说明:刘宏缔的go森林是一个专注golang的博客,
地址:https://blog.csdn.net/weixin_43881017
说明:作者:刘宏缔 邮箱: 371125307@qq.com
二,sql说明
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CREATE TABLE `article` (
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`articleId` bigint unsigned NOT NULL AUTO_INCREMENT COMMENT 'id',
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`type` tinyint unsigned NOT NULL DEFAULT '0' COMMENT '类型',
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`subject` varchar(500) NOT NULL DEFAULT '' COMMENT '标题',
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`addTime` datetime NOT NULL DEFAULT '2020-11-19 00:00:00' COMMENT '添加时间',
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`isHot` tinyint unsigned NOT NULL DEFAULT '0' COMMENT '是否热榜,0:非热,1,热',
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`url` varchar(500) NOT NULL DEFAULT '' COMMENT '链接地址',
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`domain` varchar(100) NOT NULL DEFAULT '' COMMENT '域',
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`userId` bigint unsigned NOT NULL DEFAULT '0' COMMENT '推荐用户',
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`approvalStaffId` int unsigned NOT NULL DEFAULT '0' COMMENT '批准员工',
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`digSum` int unsigned NOT NULL DEFAULT '0' COMMENT '被顶的次数',
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`commentSum` int unsigned NOT NULL DEFAULT '0' COMMENT '被评论的次数',
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`isPublish` tinyint NOT NULL DEFAULT '0' COMMENT '0,未发布,1,已发布',
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PRIMARY KEY (`articleId`),
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KEY `isPublish` (`isPublish`)
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) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='文章表'
插入6条演示数据:
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INSERT INTO `article` (`articleId`, `type`, `subject`, `addTime`, `isHot`, `url`, `domain`, `userId`, `approvalStaffId`, `digSum`, `commentSum`, `isPublish`) VALUES
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(1, 0, '【最近,南非发现一座大油田】石油和天然气两种重要资源是南非储量的最短板,“贫油”的帽子也一直扣在南非的头上摘不下来。可就在最近,在南非海域进行油气勘探已久的道达尔透露了其新的勘探成果:在距离南非南部海岸约175公里的奥特尼夸盆地的11B/12B地区,再次发现了重要的凝析气,可能蕴藏着大量天然气及原油。', '2020-11-19 00:00:00', 1, 'https://mp.weixin.qq.com/s/1btbmouH-2KuIHUMoucq2w', '', 1, 1, 0, 0, 1),
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(2, 1, '让喵喵来开启周五的早晨吧!', '2020-11-19 00:00:00', 0, 'https://m.weibo.cn/status/4573112073720433?', 'm.weibo.cn', 0, 0, 0, 0, 1),
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(3, 0, '汤姆·赫兰德、黛茜·雷德利、麦斯·米科尔森、尼克·乔纳斯主演的《混沌漫步》公开预告。影片由《明日边缘》导演道格·里曼执导,暂时定档明年1月22日上映。', '2020-11-19 00:00:00', 1, 'http://news.mtime.com/2020/11/19/1604795.html', 'news.mtime.com', 0, 0, 0, 0, 1),
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(4, 1, '扫地机器人这个东西确实方便,大多数时候把房间扫的比较干净,但还有很多边边角角清扫不上,希望厂家能够在app上显示出机器人的路线图,明确告知哪些路段没有照顾到,要不然就再开发一个项目经理机器人,跟在扫地机器人屁股后面监督。//@大窑儿:可以弄个步数排行榜,让机器人们互相点赞,揣摩,攀比,内卷,无意义竞争。', '2020-11-19 00:00:00', 0, '', '', 0, 0, 0, 0, 1),
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(5, 0, '【世卫组织建议医生不要使用瑞德西韦治疗新冠】世卫组织指导小组表示,证据显示,瑞德西韦对提高新冠肺炎患者的存活率没有显著影响。这项建议发表在上周五的《英国医学杂志》中。', '2020-11-19 00:00:00', 0, 'https://www.thepaper.cn/newsDetail_forward_10067542', 'thepaper.cn', 0, 0, 0, 0, 1),
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(6, 0, '11月19日0—24时,31个省(自治区、直辖市)和新疆生产建设兵团报告新增确诊病例17例,均为境外输入病例(福建6例,上海4例,陕西3例,广东2例,北京1例,四川1例);无新增死亡病例;新增疑似病例1例,为本土病例(在天津)。', '2020-11-19 00:00:00', 0, 'http://m.news.cctv.com/2020/11/20/ARTIIR9o72TuDF80s6hY2IvD201120.shtml', 'm.news.cctv.com', 0, 0, 0, 0, 1);
三,go代码说明
1,pkg/validCheck/convert.go
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package validCheck
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import (
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"strconv"
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)
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type StrTo string
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func (s StrTo) String() string {
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return string(s)
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}
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func (s StrTo) Int() (int, error) {
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v, err := strconv.Atoi(s.String())
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return v, err
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}
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func (s StrTo) MustInt() int {
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v, _ := s.Int()
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return v
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}
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func (s StrTo) UInt32() (uint32, error) {
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v, err := strconv.Atoi(s.String())
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return uint32(v), err
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}
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func (s StrTo) UInt64() (uint64, error) {
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v, err := strconv.Atoi(s.String())
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return uint64(v), err
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}
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func (s StrTo) MustUInt32() uint32 {
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curInt32, _ := strconv.Atoi(s.String())
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if (curInt32 < 0) {
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return 0;
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}
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v, _ := s.UInt32()
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return v
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}
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func (s StrTo) MustUInt64() uint64 {
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//fmt.Println(s)
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curInt64, _ := strconv.ParseInt(s.String(), 10, 64);
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if (curInt64 < 0) {
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return 0;
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}
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v, _ := s.UInt64()
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//fmt.Println(v)
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return v
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}
2,pkg/validCheck/requestValid.go
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package validCheck
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-
import (
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"github.com/gin-gonic/gin"
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ut "github.com/go-playground/universal-translator"
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val "github.com/go-playground/validator/v10"
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"strings"
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)
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type ValidError struct {
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Key string
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Message string
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}
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type ValidErrors []*ValidError
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func (v *ValidError) Error() string {
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return v.Message
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}
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func (v ValidErrors) Error() string {
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return strings.Join(v.Errors(), ",")
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}
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func (v ValidErrors) Errors() []string {
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var errs []string
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for _, err := range v {
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errs = append(errs, err.Error())
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}
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return errs
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}
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//判断变量是否符合要求
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func BindAndValid(c *gin.Context, v interface{}) (bool, ValidErrors) {
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var errs ValidErrors
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err := c.ShouldBind(v)
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if err != nil {
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v := c.Value("trans")
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trans, _ := v.(ut.Translator)
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verrs, ok := err.(val.ValidationErrors)
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if !ok {
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errs = append(errs, &ValidError{
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Key: "field",
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Message: err.Error(),
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})
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return false, errs
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}
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for key, value := range verrs.Translate(trans) {
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errs = append(errs, &ValidError{
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Key: key,
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Message: value,
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})
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}
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return false, errs
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}
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return true, nil
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}
3,request/article.go
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package request
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type ArticleRequest struct {
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ID uint64 `form:"id" binding:"required,gte=1"`
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//State uint8 `form:"state,default=1" binding:"oneof=0 1"`
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}
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type ArticleListRequest struct {
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Page int `form:"page" binding:"gte=1"`
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//State uint8 `form:"state,default=1" binding:"oneof=0 1"`
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}
说明:验证的规则写在这里
4,controller/articleController.go
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package controller
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-
import (
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"fmt"
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"github.com/gin-gonic/gin"
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"github.com/liuhongdi/digv03/global"
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"github.com/liuhongdi/digv03/pkg/page"
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"github.com/liuhongdi/digv03/pkg/validCheck"
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"github.com/liuhongdi/digv03/request"
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"github.com/liuhongdi/digv03/service"
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)
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type ArticleController struct{}
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func NewArticleController() ArticleController {
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return ArticleController{}
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}
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//得到一篇文章的详情
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func (a *ArticleController) GetOne(c *gin.Context) {
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result := global.NewResult(c)
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param := request.ArticleRequest{ID: validCheck.StrTo(c.Param("id")).MustUInt64()}
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valid, errs := validCheck.BindAndValid(c, ¶m)
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if !valid {
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result.Error(400,errs.Error())
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return
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}
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articleOne,err := service.GetOneArticle(param.ID);
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if err != nil {
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result.Error(404,"数据查询错误")
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} else {
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result.Success(&articleOne);
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}
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return
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}
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//得到多篇文章,按分页返回
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func (a *ArticleController) GetList(c *gin.Context) {
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result := global.NewResult(c)
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pageInt := 0
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//is exist?
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curPage := c.Query("page")
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//if curPage not exist
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if (len(curPage) == 0) {
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pageInt = 1
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} else {
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param := request.ArticleListRequest{Page: validCheck.StrTo(c.Param("page")).MustInt()}
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valid, errs := validCheck.BindAndValid(c, ¶m)
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if !valid {
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result.Error(400,errs.Error())
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return
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}
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pageInt = param.Page
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}
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pageSize := 2;
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pageOffset := (pageInt-1) * pageSize
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articles,err := service.GetArticleList(pageOffset,pageSize)
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if err != nil {
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result.Error(404,"数据查询错误");
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fmt.Println(err.Error())
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} else {
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//sum,_ := dao.SelectcountAll()
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sum,_ := service.GetArticleSum()
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pageInfo,_ := page.GetPageInfo(pageInt,pageSize,sum)
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result.Success(gin.H{"list":&articles,"pageinfo":pageInfo});
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}
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return
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}
四,测试
1,正常访问:
http://127.0.0.1:8080/article/getone/1
返回:
2,输入非法数据:
http://127.0.0.1:8080/article/getone/a
返回:
五,查看库的版本
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module github.com/liuhongdi/digv03
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go 1.15
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require (
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github.com/gin-gonic/gin v1.6.3
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github.com/go-playground/universal-translator v0.17.0
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github.com/go-playground/validator/v10 v10.2.0
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github.com/jinzhu/gorm v1.9.16
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)
posted on 2021-01-22 11:05 ExplorerMan 阅读(630) 评论(0) 编辑 收藏 举报