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| package main
import (
"database/sql"
"fmt"
"github.com/frustra/bbcode"
_ "github.com/go-sql-driver/mysql"
//"time"
//"runtime"
"strconv"
)
const (
XnFromPost = "bbs_post"
XnTopost = "bbs_post"
DxFromPost = "pre_forum_post"
)
type Hostinfo struct {
DBUser,
DBPassword,
DBname,
DBHost,
DBPort,
DBChar string
}
type post struct {
pid int
message string
}
var OldDB, NewDB *sql.DB
/**
设置数据库,并连接数据库
*/
func SetDB() (olddata, newdata *sql.DB) {
var localhost, remotehost Hostinfo
localhost = Hostinfo{
"root",
"123456",
"xiuno",
"",
"3306",
"utf8",
}
remotehost = Hostinfo{
"root",
"123456",
"gxvtc",
"",
"3306",
"utf8",
}
olddata, _ = connMysql(&localhost)
newdata, _ = connMysql(&remotehost)
return olddata, newdata
}
/**
连接数据库
*/
func connMysql(host *Hostinfo) (*sql.DB, error) {
//db, err := sql.Open("mysql", "root:123456@/"+dbs+"?charset=utf8")
if host.DBHost != "" {
host.DBHost = "tcp(" + host.DBHost + ":" + host.DBPort + ")"
fmt.Println(host.DBHost)
}
db, err := sql.Open("mysql", host.DBUser+":"+host.DBPassword+"@"+host.DBHost+"/"+host.DBname+"?charset="+host.DBChar)
return db, err
}
func main() {
OldDB, NewDB = SetDB()
defer OldDB.Close()
defer NewDB.Close()
updatePost()
}
func updatePost() {
const total = 100
//selectPost := "SELECT pid,message FROM " + XnFromPost + " ORDER BY pid ASC LIMIT 10"
selectPost := "SELECT pid,message FROM " + DxFromPost + " ORDER BY pid ASC "
/*
Data, err := OldDB.Query(selectPost)
if err != nil {
fmt.Println(err.Error())
}*/
fmt.Println(selectPost)
updatePost := "UPDATE " + XnTopost + " SET message = ? WHERE pid = ? limit 1"
fmt.Println(updatePost)
stmt, err := OldDB.Prepare(updatePost)
//insertPost := "INSERT INTO " + XnTopost + " (message,pid) VALUES (?,?)"
//fmt.Println(insertPost)
//stmt, err := OldDB.Prepare(insertPost)
if err != nil {
fmt.Println(err.Error())
}
//mypost := make(map[int]post)
i := 0
for {
tmpNum := i * total
i++
tmpSQL := selectPost + " LIMIT " + strconv.Itoa(tmpNum) + "," + strconv.Itoa(total)
fmt.Println(tmpSQL)
Data, err := NewDB.Query(tmpSQL)
//Data, err := NewDB.Query(tmpSQL)
if err != nil {
fmt.Println(err.Error())
}
tag := false
//使用并发的方式
for Data.Next() {
tag = true
var pid int
var msg string
Data.Scan(&pid, &msg)
fmt.Println(pid)
//bbcode转码html
compiler := bbcode.NewCompiler(true, true)
msg = compiler.Compile(msg)
//mypost[pid] = post{pid, msg}
_, err = stmt.Exec(msg, pid)
if err != nil {
fmt.Println("pid: ", pid, err.Error())
}
}
if tag == false {
fmt.Println("没有数据了...")
break
}
}
/*
//直接查找并更新
for Data.Next() {
var pid int
var msg string
Data.Scan(&pid, &msg)
//bbcode转码html
compiler := bbcode.NewCompiler(true, true)
msg = compiler.Compile(msg)
mypost[pid] = post{pid, msg}
//fmt.Println(mypost)
fmt.Println(pid)
_, err = stmt.Exec(msg, pid)
if err != nil {
fmt.Println("pid: ", pid, err.Error())
}
}
*/
/*
//使用并发的方式
for Data.Next() {
var pid int
var msg string
Data.Scan(&pid, &msg)
//bbcode转码html
compiler := bbcode.NewCompiler(true, true)
msg = compiler.Compile(msg)
mypost[pid] = post{pid, msg}
}
runtime.GOMAXPROCS(runtime.NumCPU())
c := make(chan post)
for _, v := range mypost {
go ShowMsg(c, v)
/*
go func() {
fmt.Println(v.pid)
c <- v.pid
}()
<-c
//time.Sleep(2 * time.Second)
//fmt.Println(v.pid)
}
for _, _ = range mypost {
fmt.Println(&c)
<-c
} */
}
func ShowMsg(c chan post, mypost post) {
//fmt.Println(mypost.pid)
c <- mypost
} |