package utils import ( // "fmt" html "html/template" con "strconv" "strings" "github.com/astaxie/beego/orm" "fmt" "math" ) type PageOptions struct { TableName string //表名 -----------------[必填] Conditions string //条件 CurrentPage int //当前页 ,默认1 每次分页,必须在前台设置新的页数,不设置始终默认1.在控制器中使用方式:cp, _ := this.GetInt("pno") po.CurrentPage = int(cp) PageSize int //页面大小,默认20 LinkItemCount int //生成A标签的个数 默认10个 Href string //A标签的链接地址 ---------[不需要设置] ParamName string //参数名称 默认是pno FirstPageText string //首页文字 默认"首页" LastPageText string //尾页文字 默认"尾页" PrePageText string //上一页文字 默认"上一页" NextPageText string //下一页文字 默认"下一页" EnableFirstLastLink bool //是否启用首尾连接 默认false 建议开启 EnablePreNexLink bool //是否启用上一页,下一页连接 默认false 建议开启 } /** * 分页函数，适用任何表 * 返回 总记录条数,总页数,以及当前请求的数据RawSeter,调用中需要"rs.QueryRows(&tblog)"就行了 --tblog是一个Tb_log对象 * 参数：表名，当前页数，页面大小，条件（查询条件,格式为 " and name='zhifeiya' and age=12 "） */ func GetPagesInfo(tableName string, currentpage int, pagesize int, conditions string) (int, int, orm.RawSeter) { if currentpage <= 1 { currentpage = 1 } if pagesize == 0 { pagesize = 20 } var rs orm.RawSeter o := orm.NewOrm() var totalItem, totalpages int = 0, 0 //总条数,总页数 o.Raw("SELECT count(*) FROM " + tableName + " where 1 > 0 " + conditions).QueryRow(&totalItem) //获取总条数 if totalItem <= pagesize { totalpages = 1 } else if totalItem > pagesize { temp := totalItem / pagesize if (totalItem % pagesize) != 0 { temp = temp + 1 } totalpages = temp } rs = o.Raw("select * from " + tableName + " where 1 > 0 " + conditions + " LIMIT " + con.Itoa((currentpage-1)*pagesize) + "," + con.Itoa(pagesize)) return totalItem, totalpages, rs } /** * 返回总记录条数,总页数,当前页面数据,分页html * 根据分页选项,生成分页连接 下面是一个实例: func (this *MainController) Test() { var po util.PageOptions po.EnablePreNexLink = true po.EnableFirstLastLink = true po.LinkItemCount = 7 po.TableName = "help_topic" cp, _ := this.GetInt("pno") po.CurrentPage = int(cp) _,_,_ pager := util.GetPagerLinks(&po, this.Ctx) this.Data["Email"] = html.HTML(pager) this.TplName = "test.html" } */ func GetPagerLinks(po *PageOptions,requestURI string) (int, int, orm.RawSeter, html.HTML) { str := "" totalItem, totalpages, rs := GetPagesInfo(po.TableName, po.CurrentPage, po.PageSize, po.Conditions) po = setDefault(po, totalpages) DealUri(po, requestURI) if totalpages <= po.LinkItemCount { str = fun1(po, totalpages) //显示完全 12345678910 } else if totalpages > po.LinkItemCount { if po.CurrentPage < po.LinkItemCount { str = fun2(po, totalpages) //123456789...200 } else { if po.CurrentPage + po.LinkItemCount < totalpages { str = fun3(po, totalpages) } else { str = fun4(po, totalpages) } } } return totalItem, totalpages, rs, html.HTML(str) } func GetPagerHtml(requestURI string,pageIndex, pageSize,totalCount int) (html.HTML){ po := &PageOptions{ CurrentPage: pageIndex, PageSize: pageSize, EnableFirstLastLink : true, ParamName : "page", } totalPages := int(math.Ceil(float64(totalCount) / float64(pageSize))) setDefault(po,totalPages) DealUri(po,requestURI) str := "" if totalPages <= po.LinkItemCount { str = fun1(po, totalPages) //显示完全 12345678910 } else if totalPages > po.LinkItemCount { if po.CurrentPage < po.LinkItemCount { str = fun2(po, totalPages) //123456789...200 } else { if po.CurrentPage + po.LinkItemCount < totalPages { str = fun3(po, totalPages) } else { str = fun4(po, totalPages) } } } str = strings.Replace(str,"?&","?",-1) //str = strings.Replace(str,"&&","&",-1) return html.HTML(str) } /** * 处理url,目的是保存参数 */ func DealUri(po *PageOptions, requestURI string) { var rs string if strings.Contains(requestURI, "?") { arr := strings.Split(requestURI, "?") rs = "" arr2 := strings.Split(arr[1], "&") for _, v := range arr2 { if !strings.Contains(v, po.ParamName) { if strings.HasSuffix(rs,"&") { rs += v }else{ rs += v + "&" } //rs += "&" + v } } if strings.HasPrefix(rs,"&") { rs = string(rs[1:]) } if strings.HasSuffix(rs,"&"){ rs = string(rs[0:strings.Count(rs,"")-1]) } rs = arr[0] + "?" + rs fmt.Println(rs) } else { //rs = requestURI + "?" //+ po.ParamName + "time=" + con.Itoa(time.Now().Second()) rs = requestURI + "?" } po.Href = rs } /** * 1...197 198 199 200 */ func fun4(po *PageOptions, totalPages int) string { rs := "" rs += getHeader(po, totalPages) rs += "
  • " + con.Itoa(1) + "
  • " rs += "
  • ...
    • " for i := totalPages - po.LinkItemCount; i <= totalPages; i++ { if po.CurrentPage != i { rs += "
  • " + con.Itoa(i) + "
    • " } else { rs += "
  • " + con.Itoa(i) + " (current)
    • " } } rs += getFooter(po, totalPages) return rs } /** * 1...6 7 8 9 10 11 12 13 14 15... 200 */ func fun3(po *PageOptions, totalpages int) string { var rs string = "" rs += getHeader(po, totalpages) rs += "
  • " + con.Itoa(1) + "
    • " rs += "..." for i := po.CurrentPage - po.LinkItemCount/2 + 1; i <= po.CurrentPage+po.LinkItemCount/2-1; i++ { if po.CurrentPage != i { rs += "" + con.Itoa(i) + "" } else { rs += "
  • " + con.Itoa(i) + " (current)
    • " } } rs += "..." rs += "
  • " + con.Itoa(totalpages) + "
    • " rs += getFooter(po, totalpages) return rs } /** * totalpages > po.LinkItemCount po.CurrentPage < po.LinkItemCount * 123456789...200 */ func fun2(po *PageOptions, totalpages int) string { var rs string = "" rs += getHeader(po, totalpages) for i := 1; i <= po.LinkItemCount+1; i++ { if i == po.LinkItemCount { rs += "
  • ...
    • " } else if i == po.LinkItemCount+1 { rs += "
  • " + con.Itoa(totalpages) + "
    • " } else { if po.CurrentPage != i { rs += "
  • " + con.Itoa(i) + "
    • " } else { rs += "
  • " + con.Itoa(i) + " (current)
    • " } } } rs += getFooter(po, totalpages) return rs } /** * totalpages <= po.LinkItemCount * 显示完全 12345678910 */ func fun1(po *PageOptions, totalpages int) string { var rs string = "" rs += getHeader(po, totalpages) for i := 1; i <= totalpages; i++ { if po.CurrentPage != i { rs += "
  • " + con.Itoa(i) + "
    • " } else { rs += "
  • " + con.Itoa(i) + " (current)
    • " } } rs += getFooter(po, totalpages) return rs } /** * 头部 */ func getHeader(po *PageOptions, totalpages int) string { var rs string = "" return rs } /** * 设置默认值 */ func setDefault(po *PageOptions, totalpages int) *PageOptions { if len(po.FirstPageText) <= 0 { po.FirstPageText = "«" } if len(po.LastPageText) <= 0 { po.LastPageText = "»" } if len(po.PrePageText) <= 0 { po.PrePageText = "‹" } if len(po.NextPageText) <= 0 { po.NextPageText = "›" } if po.CurrentPage >= totalpages { po.CurrentPage = totalpages } if po.CurrentPage <= 1 { po.CurrentPage = 1 } if po.LinkItemCount == 0 { po.LinkItemCount = 10 } if po.PageSize == 0 { po.PageSize = 20 } if len(po.ParamName) <= 0 { po.ParamName = "pno" } return po } /** *判断首页尾页 上一页下一页是否能用 */ func judgeDisable(po *PageOptions, totalpages int, h_f int) string { var rs string = "" //判断头部 if h_f == 0 { if po.CurrentPage == 1 { rs = " " } } else { if po.CurrentPage == totalpages { rs = " " } } return rs }