分页和并发执行select

server.go

@@ -6,7 +6,9 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+	"strconv"
 	"strings"
+	"sync"
 )
 
 type IndexData struct {
@@ -46,15 +48,37 @@ func index(w http.ResponseWriter, r *http.Request) {
 
 //输出列表
 func list(w http.ResponseWriter, r *http.Request) {
+	values:=r.URL.Query()
+	fid:=""
+	currentPage:=0
+	if len(values["fid"])!=0{
+		fid=values["fid"][0]
+	}
+	if len(values["page"])!=0{
+		currentPage,_=strconv.Atoi(values["page"][0])
+	}
+	if fid==""{
+		fid="INBOX"
+	}
+	if currentPage==0{
+		currentPage=1
+	}
+
 
 	auth := getCookie(r, "auth")
 	authStrings := strings.Split(auth, "|")
 
 	render := new(IndexData)
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
 		folders :=tools.GetFolders(authStrings[0], authStrings[1], authStrings[2])
 		render.Folders = folders
-	mails := tools.GetFolderMail(authStrings[0], authStrings[1], authStrings[2], "INBOX", 10)
+	}()
+	mails := tools.GetFolderMail(authStrings[0], authStrings[1], authStrings[2], fid,currentPage, 20)
 	render.Mails = mails
+	wg.Wait()
 	t, _ := template.ParseFiles("./tmpl/index.html")
 	t.Execute(w, render)
 }

tmpl/index.html

@@ -24,7 +24,7 @@
             <li class="list-group-item active">邮件夹</li>
             {{ range $key, $value := .Folders}}
             <li class="list-group-item d-flex justify-content-between align-items-center">
-                {{$key}}
+                <a href="/list?fid={{$key}}">{{$key}}</a>
                 {{if ne $value 0 }}<span class="badge badge-primary badge-pill">{{$value}}</span>{{end}}
             </li>
             {{end}}

tools/imap.go

@@ -86,8 +86,9 @@ func GetFolders(server string, email string, password string)map[string]int{
 	log.Println(folders)
 	return folders
 }
+
 //获取邮件夹邮件
-func GetFolderMail(server string, email string, password string,folder string,pagesize int)[]string{
+func GetFolderMail(server string, email string, password string,folder string,currentPage int,pagesize int)[]string{
 	var c *client.Client
 	//defer c.Logout()
 	c=connect(server,email,password)
@@ -96,7 +97,7 @@ func GetFolderMail(server string, email string, password string,folder string,pa
 	}
 
 	mbox, _ := c.Select(folder, true)
-	to := mbox.Messages
+	to := mbox.Messages-uint32((currentPage-1)*pagesize)
 	from := to-uint32(pagesize)
 
 	seqset := new(imap.SeqSet)
@@ -107,10 +108,11 @@ func GetFolderMail(server string, email string, password string,folder string,pa
 	go func() {
 		done <- c.Fetch(seqset, []imap.FetchItem{imap.FetchEnvelope}, messages)
 	}()
-	log.Println(111)
 	var res []string
 	for msg := range messages {
 		res=append(res,msg.Envelope.Subject)
 	}
+	log.Println(res)
+
 	return res
 }