beego07----web博客

conf/app.conf

appname = blog1
httpport = 8080
runmode = dev
name=admin
pwd=admin

controllersmy/attach.go

package controllersmy

import (
    "github.com/astaxie/beego" //导入beego包
    "io"
    "net/url"
    "os"
)

type AttachmentController struct {
    beego.Controller
}

func (c *AttachmentController) Get() {
    filePath, err := url.QueryUnescape(c.Ctx.Request.RequestURI[1:]) //去除最开头的一个/
    if err != nil {
        c.Ctx.WriteString(err.Error())
        return
    }

    f, err := os.Open(filePath)
    if err != nil {
        c.Ctx.WriteString(err.Error())
        return
    }

    defer f.Close()

    _, err = io.Copy(c.Ctx.ResponseWriter, f) //2个参数是输出流和输入流

    if err != nil {
        c.Ctx.WriteString(err.Error())
        return
    }
}

controllersmy/default.go

//model的上层，下层调用models来操作数据库

package controllersmy //跟外面的包名一致

import (
    "github.com/astaxie/beego" //导入beego包
)

type MainController struct {
    beego.Controller //"github.com/astaxie/beego"包里面的Controller
}

func (c *MainController) Get() {
    c.TplName = "index.html" //返回页面名字
    c.Data["isHome"] = true

    c.Data["isCookie"] = checkCookie(c.Ctx)
}

controllersmy/login.go

package controllersmy

import (
    //"fmt"
    "github.com/astaxie/beego" //导入beego包
    "github.com/astaxie/beego/context"
    //"net/url"
)

type LoginController struct {
    beego.Controller
}

func (c *LoginController) Get() {
    c.Data["islogin"] = true

    isExit := c.Input().Get("exit") == "true"
    if isExit {
        c.Ctx.SetCookie("name", "", -1, "/") //-1就会删除cookie
        c.Ctx.SetCookie("pwd", "", -1, "/")
        return //不需要指定跳的首页了
    }
    c.TplName = "login.html" //返回页面名字
}

func (c *LoginController) Post() {
    //c.TplName = "login.html" //返回页面名字
    c.Data["islogin"] = true
    //c.Ctx.WriteString(fmt.Sprint(c.Input())) //获取post时候带过来的参数,WriteString页面就跳转了不执行下面的了，
    uname := c.Input().Get("username")
    pwd := c.Input().Get("pwd")
    autologin := c.Input().Get("auto") == "on" //bool值

    //跟app.conf里面的用户名和密码比对
    if beego.AppConfig.String("name") == uname && beego.AppConfig.String("pwd") == pwd {
        maxAge := 0
        if autologin { //自动登陆就要设置cookie
            maxAge = 1<<31 - 1

        }
        c.Ctx.SetCookie("name", uname, maxAge, "/") //保存时间和保存路径
        c.Ctx.SetCookie("pwd", uname, maxAge, "/")  //保存时间和保存路径
        c.Redirect("/welcome", 301)                 //登陆后重定向到欢迎页面
        //c.TplName = "welcome.html" //返回页面名字,没有走过滤器controller，Redirect走了过滤器controller，
    } else {
        return
    }
    return
}

//整个包可访问
func checkCookie(ctx *context.Context) bool {
    ck, err := ctx.Request.Cookie("name") //获取请求带来的cookie
    if err != nil {
        return false
    }
    uname := ck.Value

    ck, err = ctx.Request.Cookie("pwd") //获取请求带来的cookie
    if err != nil {
        return false
    }
    pwd := ck.Value

    return beego.AppConfig.String("name") == uname && beego.AppConfig.String("pwd") == pwd
}

controllersmy/topic.go

package controllersmy

import (
    "blog1/models"
    "github.com/astaxie/beego" //导入beego包
    "path"
)

type TopicController struct {
    beego.Controller
}

func (c *TopicController) Get() {
    c.TplName = "topic.html" //返回页面名字
    c.Data["isTopic"] = true
    c.Data["isCookie"] = checkCookie(c.Ctx)
}

func (c *TopicController) Post() {
    if !checkAccount(c.Ctx) { //没有账号登陆页面
        c.Redirect("/login", 302)
        return
    }
    title := c.Input().Get("title")
    content := c.Input().Get("content")

    //获取附件,上传删除修改跟cmss一样，
    _, fh, err = this.GetFile("attachment")
    if err != nil {
        beego.Error(err)
    }

    var attachFilename string
    if fh != nil {
        //保存附件
        attachFilename = fh.FileName
        beego.Info(attachFilename)
        //filement:tmp.go
        //path:attachments/tmp.go
        err = this.SaveToFile("attachment", path.Join("attachments", attachFilename)) //path的第一个参数是工程目录下attachments文件夹名字

    }

    if len(id) == 0 {

        err := models.AddTopic(title, content, attachFilename)
    } else {
        err := models.ModifyTopic(id, title, content, attachFilename)
    }
    if err != nil {
        beego.Debug(err)
    }
    c.Redirect("/topic/view"+id, 302) //添加完之后跳转到查看页面
}

func (c *TopicController) Add() {
    c.TplName = "topic_add.html" //返回页面名字
    c.Ctx.WriteString("topic_add")
}

func (c *TopicController) View() { //查看单偏文章
    c.TplName = "topic_add.html"
    topic, err := models.GetOneTopic(c.Ctx.Input.Params("0")) //localhost:8080/topic/view/2343, Params("0")是2343
    if err != nil {
        c.Redirect("/", 302)
    }
    c.Data["Topic"] = topic

    //如果要获取文章的回复，就到这个写
    reply, err := models.GetAllApply(c.Ctx.Input.Params("0")) //localhost:8080/topic/view/2343, Params("0")是2343
    if err != nil {
        c.Redirect("/", 302)
    }
    c.Data["reply"] = reply
}

func (c *TopicController) Modify() { //查看单偏文章
    tid := c.Input().Get("id") //获取url中传过来的id

    topic, err := models.GetOneTopic(tid) //localhost:8080/topic/view/2343, Params("0")是2343
    if err != nil {
        c.Redirect("/", 302)
        return
    }
    c.Data["Topic"] = topic
    c.Data["id"] = id

    c.Redirect("/", 302)
}

func (c *TopicController) Delete() {
    if !checkAccount(c.Ctx) { //没有账号登陆页面
        c.Redirect("/login", 302)
        return
    }

    err := models.DeleteTopic(c.Ctx.Input.Params("0"))
    if err != nil {
        beego.Error(err)
    }

    c.TplName = "topic_add.html"
}

controllersmy/welcome.go

package controllersmy //跟外面的包名一致

import (
    "blog1/models"
    //"fmt"
    "github.com/astaxie/beego" //导入beego包
)

type WelcomeController struct {
    beego.Controller //"github.com/astaxie/beego"包里面的Controller
}

func (c *WelcomeController) Get() {
    op := c.Input().Get("op")
    beego.Debug("aaa")
    switch op {
    case "add":
        //c.Ctx.WriteString(fmt.Sprint(c.Input()))
        name := c.Input().Get("name")
        if len(name) == 0 {
            break
        }
        err := models.AddCatory(name)
        if err != nil {
            beego.Debug(err)
            return
        }
    case "del":
        beego.Debug("333")
        //c.Ctx.WriteString(fmt.Sprint(c.Input()))
        id := c.Input().Get("id")
        if len(id) == 0 {
            break
        }
        err := models.DelCatory(id)
        if err != nil {
            beego.Debug(err)
        }
    }

    c.Data["welcome"] = true
    var err error
    c.Data["Categories"], err = models.GetAllCategory(false)
    beego.Debug("111")
    beego.Debug(c.Data["Categories"])
    if err != nil {
        beego.Debug(err)
    }
    c.TplName = "welcome.html" //返回页面名字,控制器之后写页面的名字，
}

model/models.go

//操作数据库层，control调用，

//使用beego的orm,先要创建好结构，然后将结构提交给orm进行创建表
package models

import (
    "github.com/Unknwon/com"
    "github.com/astaxie/beego"
    "github.com/astaxie/beego/orm"  //导入beegoorm的路径，
    _ "github.com/mattn/go-sqlite3" //go-sqlite3的驱动程序，_表示只执行初始化函数，
    "os"
    "path"
    "strconv"
    "strings"
    "time"
)

const (
    _DB_NAME        = "data/beego1.db"
    _SQLITE3_DRIVER = "sqlite3"
)

//后面再添加字段，也可以动态在表中增加
type Category struct {
    Id        int64     //名称是Id，类型是int32或者int64,orm就认为是主键
    Title     string    //不指定长度，默认是255字节
    Created   time.Time `orm:"index"` //创建时间,`orm:"index"`是tag,表示建立索引，
    Views     int64     `orm:"index"` //浏览次数
    TopicTime time.Time `orm:"index"`
    newziduan string
}

// //打印
//     beego.Trace("trace")
//     beego.Info("info")
//     beego.Debug("debug")
//     beego.Warn("warn")
// beego.Error("error")
type Topic struct {
    Id         int64
    Uid        int64
    Title      string
    Content    string `orm:"size(5000)"`
    Attachment string
    Created    time.Time `orm:"index"` //创建时间,`orm:"index"`是tag,
    Updated    time.Time `orm:"index"` //创建时间,`orm:"index"`是tag,
    Views      int64     `orm:"index"` //浏览次数
    Author     string
    ReplayTime time.Time `orm:"index"`
}

func RegisterDB() {
    if !com.IsExist(_DB_NAME) { //数据文件不存在就人为创建
        os.MkdirAll(path.Dir(_DB_NAME), os.ModePerm)
        os.Create(_DB_NAME)
    }
    //orm需要先注册模型Category、Topic
    orm.RegisterModel(new(Category), new(Topic))
    //注册驱动
    orm.RegisterDriver(_SQLITE3_DRIVER, orm.DRSqlite)
    //注册默认数据库,可以是多个数据库，不管有几个数据库，默认数据库名字要叫default
    //驱动名称，数据库路径，最大连接数
    orm.RegisterDataBase("default", _SQLITE3_DRIVER, _DB_NAME, 10)
}

func AddCatory(name string) error {
    beego.Debug("aaa1")
    o := orm.NewOrm() //获取orm对象
    o.Using("default")
    c := &Category{Title: name, Created: time.Now(), Views: 11, TopicTime: time.Now()} //创建Category对象，title=传进来的name

    qs := o.QueryTable("category")         //查询判断name是否被用了，使用的是beego的查询,Category是表名，
    err := qs.Filter("title", name).One(c) //根据title找到category，One(c)预期只有一个，
    beego.Debug(err)
    if err == nil { //==nil表示找到了
        beego.Debug(err)
        return err
    }
    beego.Debug("aaa")

    //否则插入
    id, err1 := o.Insert(c)
    beego.Debug("cc")
    if err1 != nil { //err != nil表示插入失败
        beego.Debug(err1)
        return err1
    }
    beego.Debug(id)
    beego.Debug("bbb")
    return nil
}

func GetAllCategory(isPaixu bool) ([]*Category, error) { //返回元素类型为Category的slice和error
    o := orm.NewOrm()
    o.Using("default")
    cs := make([]*Category, 0) //定义一个slice
    qs := o.QueryTable("category")
    var err error
    if isPaixu {
        _, err = qs.All(&cs)

    } else {
        _, err = qs.OrderBy("-created").All(&cs) //根据created降序
    }

    return cs, err
}

func DelCatory(id string) error {
    cid, err := strconv.ParseInt(id, 10, 64) //10进制，64位大小
    if err != nil {
        return err //人为非法操作
    }
    o := orm.NewOrm()
    cat := &Category{Id: cid} //删除必须要指定主键，如果不知道主键就要QueryTable，Filter操作
    _, err = o.Delete(cat)    //前面下横线表示不得到，否则你不使用就会报错
    return err
}

func AddTopic(name, con label, attachment string) error {
    //空格作为多个标签的分割，strings.Split(label, " ")通过空格把string分割成slice,
    //strings.Join将slice组合成string,
    label:="$"+strings.Join(
        strings.Split(label, " "), "#$") + "#"


    o := orm.NewOrm() //获取orm对象
    o.Using("default")
    topic := &Topic{
        Title:   name,
        Created: time.Now(),
        Views:   11,
    }

    topic.Title := strings.Replace(strings.Replace(Topic.Label, "#", " ", -1),
                                 "$", "", -1)//先把#变成空格，然后去除$, 

    _, err1 := o.Insert(topic)
    if err1 != nil { //err != nil表示插入失败
        beego.Debug(err1)
        return err1
    }
    return nil
}

func GetOneTopic(id string) (*Topic, error) {
    tidnum, err := strconv.ParseInt(id, 10, 64) //把10进制的转成64位
    if err != nil {
        return nil, err
    }
    o := orm.NewOrm()
    topic := new(Topic)
    qs := o.QueryTable("topic")
    err = qs.Filter("id", tidnum).One(topic) //理论上只有一个，qs.Filter("id", tidnum).All(&topic)是获取所有，

    err = qs.Filter("labels__contains", "$"+label+"#")//模糊查询，包含查询，

    if err != nil {
        return nil, err
    }

    topic.Views++            //浏览数加一
    _, err = o.Update(topic) //更新
    return topic, err
}

func ModifyTopic(id, title, content string) error {
    tidnum, err := strconv.ParseInt(id, 10, 64) //把10进制的转成64位
    if err != nil {
        return err
    }
    o := orm.NewOrm()
    topic := &Topic{Id: tidnum}
    if o.Read(topic) == nil {
        topic.Title = title
        topic.Content = content
        o.Update(topic)
    }
    return err
}

func DeleteTopic(id, title, content string) error {
    cid, err := strconv.ParseInt(id, 10, 64) //10进制，64位大小
    if err != nil {
        return err //人为非法操作
    }
    o := orm.NewOrm()
    top := &Topic{Id: cid} //删除必须要指定主键，如果不知道主键就要QueryTable，Filter操作
    //先创建Topic对象，然后根据这个对象进行删除，
    _, err = o.Delete(top) //前面下横线表示不得到，否则你不使用就会报错
    return err
}

routers/router.go

package routers

import (
    "blog1/controllersmy"
    "github.com/astaxie/beego"
    "os"
)

func init() {
    beego.Router("/", &controllersmy.MainController{})       //"blog1/controllersmy"里面的 &controllersmy
    beego.Router("/login", &controllersmy.LoginController{}) //"blog1/controllersmy"里面的 &controllersmy
    beego.Router("/welcome", &controllersmy.WelcomeController{})
    beego.Router("/topic", &controllersmy.TopicController{})
    beego.Router("/topic/add", &controllersmy.TopicController{}, "post:Add") //是post请求，并且是add方法，
    beego.Router("/topic/delete", &controllersmy.TopicController{}, "get:delete")

    //创建附件目录attachments
    os.Mkdir("attachments", os.ModePerm)
    //作为静态文件将附件反馈出来
    beego.SetStaticPath("/attachments", "attachment")

    //不作为静态文件，作为一个控制器来处理
    beego.Router("/attachment/:all", &controllersmy.AttachmentController{})
}

views/index.html

{{template "header" .}}
<title>首页</title>
 <style type="text/css">
    
  </style>
</head>

<body>
{{template "navbar" .}}
  <!-- get请求就用a标签就可以了，post请求还要写一个表单 -->
  <form method="POST" action="/login">
    表单登陆
    <input name="username" id="uname"/>
    <input name="pwd"/ id="pwd">
    <input name="auto"/>
    <input type="submit" onclick="return checkInput();">
    <input type="button" onclick="return backHome();">回到首页</input>
  </form>

  {{if .isCookie}}
    有cokie了
  {{end}}

  <script src="/static/js/reload.min.js"></script>

  <script type="text/javascript">
  function checkInput(){
    var name = document.getElementById("uname")
    if (name.value.length == 0) {
      alert("输入账号")
      return false//不提交表单
    }

    var pwd = document.getElementById("pwd")
    if (pwd.value.length == 0) {
      alert("输入账号")
      return false//不提交表单
    }

    return true//提交表单
  }

  function backHome(){
    window.location.href = "/"
    return false//表单一直不提交
  }
  </script>
</body>
</html>

views/login.html

{{template "header" .}}
<title>登陆成功</title>
 <style type="text/css">
    
  </style>
</head>

<body>
    {{template "navbar" .}}
登陆成功
  <script src="/static/js/reload.min.js"></script>
</body>

views/T.head.tpl

{{define "header"}}
    <!DOCTYPE html>
    <html>
    <head>
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      <link rel="shortcut icon" href="" type="image/x-icon" />
      <!-- <link id="mobile-style" type="text/css" rel="stylesheet" href="/static/css/main.css">
      <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> -->
{{end}}

views/T.navbar.tpl

{{define "navbar"}}
<!-- if .isHome是contrloller传递进来的值 -->
  <div {{if .isHome}}class="active"{{end}} style="height:100px;400px;background-color:red;display:inline-block;">首页</div>
  <div {{if .islogin}}class="active"{{end}} style="height:100px;400px;background-color:blue;display:inline-block;">登陆</div>
  <ul class="nav navber-nav">
      {{if .islogin}}
          <li>登陆成功</li>
      {{else}}
          <li>首页</li>
      {{end}}
  </ul>
{{end}}

views/topic.html

{{template "header" .}}
<title>topic</title>
 <style type="text/css">
    
  </style>
</head>

<body>
    {{template "navbar" .}}
{{.Topic.Title}}
{{.Topic.Content}}
{{.Topic.Attachment}}
{{$tid := .Topic.Id}}  <!-- 这就是一个模版变量 -->
{{$isLogin := .IsLogin}}  
  <script src="/static/js/reload.min.js"></script>

  {{if $isLogin}}   <!-- 模版变量使用 -->
    <a href="/topic/modify?id={{.Tid}}&tid={{$tid}}">修改文章</a>  <!-- 模版变量的使用 -->
  {{end}}
  
  <form method="POST" action="/topic">
    <input name="name" id="name"/>
    <input name="op" id="op"/>
    <input type="file" name="attachment">文章附件</input>
    <input type="submit">添加文章</input>
  </form>
</body>

views/welcome.html

{{template "header" .}}
<title>huayin</title>
 <style type="text/css">
    
  </style>
</head>

<body>
{{template "navbar" .}}
  欢迎你
  <script src="/static/js/reload.min.js"></script>
  <tbody>
      {{range .Categories}}
          <th>{{.Id}}</th>
          <th>{{.Title}}</th>
          <th>{{.TopicTime}}</th>
          <a href="/welcome?op=del&id={{.Id}}">删除</a><br>
      {{end}}
  </tbody>>
  <form method="Get" action="/welcome">
    <input name="name" id="name"/>
    <input name="op" id="op"/>
    <input type="submit">add添加del删除</input>
  </form>
</body>
</html>

main.go

package main

import (
    "blog1/models"
    _ "blog1/routers"
    "github.com/astaxie/beego"
    "github.com/astaxie/beego/orm"
)

func main() {
    orm.Debug = true
    orm.RunSyncdb("default", false, true) //建表，建立的数据库在data目录下，
    beego.Run()
}

func init() { //初始化数据库，使用navicat premiun查看数据库
    models.RegisterDB()
}