go语言beego框架分页器操作及接口频率限制示例
目录
获取所有文章数据
获取总条数
设置每页的条数
总页数和当前页码
获取分页数据
返回数据
beego接口频率限制
获取所有文章数据o := orm.NewOrm()
qs := o.QueryTable("Article")
12
获取总条数
count, _ := qs.Count()
1
设置每页的条数
pageSetNum := 2
1
总页数和当前页码
//总页数
pageCount := math.Ceil((float64(count) / float64(pageSetNum)))
//获取当前页码
pageNum, err := this.GetInt("pageNum")
if err != nil {
pageNum = 1
}
1234567
获取分页数据
//存储分页数据的切片
articles := new([]models.Article)
//获取分页数据
qs.Limit(pageSetNum, pageSetNum*(pageNum - 1)).All(articles)
1234
返回数据
beego.Info(*articles)
this.Data["articles"] = *articles
this.Data["count"] = count
this.Data["pageCount"] = pageCount
this.Data["pageNum"] = pageNum
this.TplName = "index.html"
beego接口频率限制
package utils
import (
"github.com/astaxie/beego"
"github.com/astaxie/beego/context"
"github.com/astaxie/beego/logs"
"github.com/ulule/limiter"
"github.com/ulule/limiter/v3"
"github.com/ulule/limiter/v3/drivers/store/memory"
"net/http"
"strings"
)
// RateLimiter this is a struct
type RateLimiter struct {
Limiter *limiter.Limiter
Username string
UserType string
UserToken string
RemainTimes int
MaxTimes int
}
func RateLimit(rateLimit *RateLimiter, ctx *context.Context) {
var (
limiterCtx limiter.Context
err error
req = ctx.Request
)
opt := limiter.Options{
IPv4Mask: limiter.DefaultIPv4Mask,
IPv6Mask: limiter.DefaultIPv6Mask,
TrustForwardHeader: false,
}
ip := limiter.GetIP(req, opt)
if strings.HasPrefix(ctx.Input.URL(), "/") {
limiterCtx, err = rateLimit.Limiter.Get(req.Context(), ip.String())
} else {
logs.Info("The api request is not track ")
}
if err != nil {
ctx.Abort(http.StatusInternalServerError, err.Error())
return
}
if limiterCtx.Reached {
logs.Debug("Too Many Requests from %s on %s", ip, ctx.Input.URL())
// refer to https://beego.me/docs/mvc/controller/errors.md for error handling
ctx.Abort(http.StatusTooManyRequests, "429")
return
}
}
func PanicError(e error) {
if e != nil {
panic(e)
}
}
func RunRate() {
// 限制每秒登录的请求次数
theRateLimit := &RateLimiter{}
// 100 reqs/second: "100-S" "100-s"
loginMaxRate := beego.AppConfig.String("total_rule::reqrate")
loginRate, err := limiter.NewRateFromFormatted(loginMaxRate + "-s")
PanicError(err)
theRateLimit.Limiter = limiter.New(memory.NewStore(), loginRate)
beego.InsertFilter("/*", beego.BeforeRouter, func(ctx *context.Context) {
RateLimit(theRateLimit, ctx)
}, true)
}
在main.go 里面调用方法即可
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