第七天 黑马十次方 吐槽列表与详细页、发吐槽与评论功能、问答频道功能、掌握DataURL和阿里云OSS
第7章 网站前台-吐槽与问答
学习目标：
**
完成吐槽列表与详细页
完成发吐槽与评论功能，掌握富文本编辑器的使用
完成问答频道功能
掌握DataURL和阿里云OSS**
1 吐槽列表与详细页
1.1 吐槽列表页
1.1.1 吐槽列表页数据渲染
吐槽列表页已经构建，我们现在来实现数据的渲染
（1）easyMock模拟数据
URL: spit/spit/search/{page}/{size}
Method: post
{
"code": 20000,
"flag": true,
"message": "查询成功",
"data": {
"total": "@integer(60, 100)",
"rows|10": [{
"id": "@string",
"content": "@cword(100,300)",
"publishtime": "@datetime",
"userid": "@string",
"nickname": "小雅",
"visits": "@integer(60, 100)",
"thumbup": "@integer(60, 100)",
"share": "@integer(60, 100)",
"comment": "@integer(60, 100)",
"state": "@string",
"parentid": "@string"
}]
}
}
（2）api目录下创建spit.js
import request from '@/utils/request'
const group_name = 'spit'
const api_name = 'spit'
export default {
search(page, size, searchMap) {
return request({
url: `/${group_name}/${api_name}/search/${page}/${size}`,
method: 'post',
data: searchMap
})
}
}
（3）修改pages/spit/index.vue
<template>
<div>
<div class="wrapper tag‐item">
<div class="fl left‐list">
<div class="tc‐data‐list">
<div class="tc‐list">
<ul class="detail‐list">
<li class="qa‐item" v‐for="(item,index) in items" :key="index">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum"><a href="#" class="zan"><i class="fa fa‐ thumbs‐up " aria‐hidden="true"></i></a></p>
<p class="zannum"> {{item.thumbup}} </p>
</div>
<div class="border answer">
<a href="#" class="star"><i class="fa fa‐star‐o" aria‐ hidden="true"></i></a> </div>
</div>
</div>
<div class="info">
<p class="text"> <a href="~/assets/spit‐detail.html" target="_blank"> {{item.content}} </a> </p>
<div class="other">
<div class="fl date">
<span>{{item.publishtime}}</span>
</div>
<div class="fr remark">
<a href="#" data‐toggle="modal" data‐target="#shareModal" class="share"><i class="fa fa‐share‐alt" aria‐hidden="true"></i> 分享</a>
<a href="#" data‐toggle="modal" data‐target="#remarkModal" class="comment"><i class="fa fa‐commenting" aria‐hidden="true"></i> 回 复</a>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
</ul>
<div class="modal fade" id="shareModal" tabindex="‐1"role="dialog" aria‐labelledby="myModalLabel">
<div class="modal‐dialog" role="document">
<div class="modal‐content">
<div class="modal‐header">
<button type="button" class="close" data‐dismiss="modal" aria‐ label="Close"><span aria‐hidden="true">×</span></button>
<h4 class="modal‐title" id="myModalLabel">分享到</h4>
</div>
<div class="modal‐body" style="overflow:hidden">
<div class="jiathis_style_32x32">
<a class="jiathis_button_qzone"></a>
<a class="jiathis_button_tsina"></a>
<a class="jiathis_button_weixin"></a>
<a class="jiathis_button_cqq"></a>
</div>
</div>
</div>
</div>
</div>
<div class="modal fade" id="remarkModal" tabindex="‐1" role="dialog" aria‐labelledby="myModalLabel">
<div class="modal‐dialog" role="document">
<div class="modal‐content">
<div class="modal‐header">
<button type="button" class="close" data‐dismiss="modal" aria‐ label="Close"><span aria‐hidden="true">×</span></button>
<h4 class="modal‐title" id="myModalLabel">发表评论</h4> </div> <div class="modal‐body"> <div class="comment">
<span class="who"><img src="~/assets/img/asset‐photo.png" /> 匿名评论</span>: 今天入职腾讯，产品岗，普通非985211大学，上家是不到五十人创业小 公司！16年毕业！找内推腾讯给的面试机会，五轮面试！可能是我把运气攒一起了！
</div>
<div class="form">
<textarea class="form‐control" rows="5" placeholder="匿名评 论"></textarea> <div class="remark">
<button class="sui‐btn btn‐info">发表</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="fl right‐tag">
<div class="block‐btn">
<p>来个匿名吐槽，发泄一下你心中的怒火吧！</p>
<a class="sui‐btn btn‐block btn‐share" href="~/assets/spit‐ submit.html" target="_blank">发吐槽</a>
</div>
</div>
<div class="clearfix"></div>
</div>
</div>
</template>
<script>
import '~/assets/css/page‐sj‐spit‐index.css'
import spitApi from '@/api/spit'
export default {
asyncData(){
return spitApi.search(1,10, {state:'1'} ).then( res=> {
return {items:res.data.data.rows}
})
}
}
</script>
1.1.2 吐槽列表瀑布流
修改页面pages/spit/index.vue
<div class="tc‐list" v‐infinite‐scroll="loadMore" >
修改pages/spit/index.vue ,添加pageNo用于记录页码 增加方法
data(){
return {
pageNo: 1
}
},
methods:{
loadMore(){
this.pageNo++ spitApi.search( this.pageNo,10,{state:'1'} ).then( res=>{ this.items=this.items.concat( res.data.data.rows )
})
}
}
1.2 吐槽详情页
1.2.1 构建吐槽详情页
（1）根据spit-detail.html创建pages/spit/_id.vue ，内容略
（2）修改pages/spit/index.vue 页面链接
<router‐link :to="'/spit/'+item.id"> {{item.content}} </router‐link>
1.2.2 吐槽详情页数据渲染
（1）easyMock模拟数据
URL: spit/spit/{id}
Methos: GET
{
"code": 20000,
"flag": true,
"message": "@string",
"data": {
"id": "@string",
"nikename": "小雅",
"content": "@cword(100,300)",
"publishtime": "@datetime",
"thumbup": "@integer(60, 100)",
"share": "@integer(60, 100)",
"comment": "@integer(60, 100)"
}
}
URL: spit/spit/commentlist/{id}
Method: GET
{
"code": 20000,
"flag": true,
"message": "@string",
"data|10": [{
"id": "@string",
"content": "我要评论我要评论我要评论我要评论我要评论我要评论",
"nikename": "小雅",
"publishtime": "@datetime",
"thumbup": "@integer(60, 100)"
}]
}
（2）修改api/spit.js
findById(id){
return request({
url: `/${api_group}/${api_name}/${id}`,
method: 'get'
})
},
commentlist(id){
return request({
url: `/${api_group}/${api_name}/commentlist/${id}`,
method: 'get'
})
}
（3）修改pages/spit/_id.vue
<template>
<div class="wrapper tc‐detail">
<div class="fl left‐list">
<div class="tc‐detail">
<!‐‐ 标题区 ‐‐>
<div class="detail‐tit">
<div class="detail‐author">
<a href="javascript:;">{{pojo.nickname}}</a> 发布
</div>
<div class="detail‐content">
<p>{{pojo.content}}</p>
</div>
<div class="detail‐tool">
<ul>
<li><span class="star"><i class="fa fa‐thumbs‐o‐up" aria‐ hidden="true"></i> {{pojo.thumbup}}</span></li>
<li><a href="#" data‐toggle="modal" data‐target="#shareModal"><i class="fa fa‐share‐alt" aria‐hidden="true"></i> {{pojo.share}}</a></li>
<li><a data‐toggle="modal" data‐target="#remarkModal"><i class="fa fa‐commenting" aria‐hidden="true"></i> {{pojo.comment}}</a> </li>
</ul>
</div>
</div>
<!‐‐ 评论区 ‐‐>
<div class="comment‐area">
<div class="comment‐tit">
<span>评论</span>
</div>
<ul class="comment‐list">
<li v‐for="(item,index) in commentlist" :key="index">
<div class="item‐photo">
<img src="~/assets/img/widget‐widget‐photo.png" alt="" />
</div>
<div class="item‐content">
<p class="author"><a href="javascript:;">{{item.nickname}}</a> 发布</p>
<p class="content">{{item.content}}</p>
</div>
<div class="item‐thumb">
<div>
<i class="fa fa‐thumbs‐o‐up" aria‐hidden="true"></i> {{item.thumbup}}
</div>
</div> </li>
</ul>
</div>
</div>
</div>
<div class="fl right‐tag">
<div class="block‐btn"> <p>来个匿名吐槽，发泄一下你心中的怒火吧！</p>
<a class="sui‐btn btn‐block btn‐share" href="~/assets/spit‐ submit.html" target="_blank">发吐槽</a>
</div>
</div>
<div class="clearfix"></div>
</div>
</template>
<script>
import '~/assets/css/page‐sj‐spit‐detail.css'
import spitApi from '@/api/spit'
import axios from 'axios'
export default {
asyncData({params}){
return axios.all( [ spitApi.findById(params.id),spitApi.commentlist(params.id) ] ).then( axios.spread( function( pojo,commentlist ){
return {
pojo: pojo.data.data,
commentlist: commentlist.data.data
}
})
)
}
}
</script>
1.3 吐槽点赞
1.3.1 基本功能
（1）easyMock模拟数据
URL: spit/spit/thumbup/{id}
Method: put
{ "code": 20000, "flag": true, "message": "执行成功" }
（2）api/spit.js 增加方法
thumbup(id)
{
return request({
url: `/${api_group}/${api_name}/thumbup/${id}`,
method: 'put'
})
}
（3）修改pages/spit/index.vue
methods: {
thumbup(index){
spitApi.thumbup(this.items[index].id).then( res=>{
if(res.data.flag){
this.items[index].thumbup++
}
})
}
}
（4）点赞调用
<p class="usenum" @click="thumbup(index)"><a href="#" class="zan"><i class="fa fa‐thumbs‐up " aria‐hidden="true"></i></a></p>
1.3.2 样式处理
实现点赞后，大拇指图标变色。样式表已经写好，在li 的样式上加上color 即可
（1）修改pages/spit/index.vue 的代码部分
import '~/assets/css/page‐sj‐spit‐index.css'
import spitApi from '@/api/spit'
export default {
asyncData(){
return spitApi.search(1,10, {state:'1'} ).then( res=> {
let tmp= res.data.data.rows.map( item=>{
return {
...item,
zan: ''
}
})
return {items:tmp}
})
},
data(){
return {
pageNo: 1
}
},
methods:{
loadMore(){
this.pageNo++
spitApi.search( this.pageNo,10,{state:'1'} ).then( res=>{
let tmp= res.data.data.rows.map( item=>{
return {
...item,
zan: ''
}
})
this.items=this.items.concat( tmp )
})
},
thumbup(index){
this.items[index].zan='color'
spitApi.thumbup(this.items[index].id).then( res=>{
if(res.data.flag){
this.items[index].thumbup++
}
})
}
}
}
（2）修改pages/spit/index.vue的html部分
<a href="#" class="zan">
<i :class="'fa fa‐thumbs‐up '+item.zan" aria‐hidden="true"></i>
</a>
1.3.3 判断是否登陆
要求：点赞必须要在用户登陆的情况下执行，非登陆状态下不能点赞。并且不可重复点 赞
导入getUser
import {getUser} from '@/utils/auth'
修改thumbup（点赞）方法
thumbup(index){
if(getUser().name===undefined){
this.$message({
message:'必须登陆才可以点赞哦~',
type:"warning" })
return }
if( this.items[index].zan==='color'){
this.$message({
message:'不可以重复点赞哦~',
type:"warning"
})
return
}
this.items[index].zan='color'
spitApi.thumbup(this.items[index].id).then( res=>{
if(res.data.flag){
this.items[index].thumbup++
}
})
}
1.3.4 提交token
修改utils/request.js ,每次请求将token添加到header里
import axios from 'axios'
import {getUser} from '@/utils/auth'
// 创建axios实例
const service = axios.create({
baseURL: 'http://192.168.184.133:7300/mock/5af314a4c612520d0d7650c7', // api的base_url
timeout: 30000, // 请求超时时间
headers: { 'Authorization': 'Bearer '+getUser().token }
})
export default service
2 发吐槽与吐槽评论
2.1 发吐槽
2.1.1 构建页面
我们这里用到VUE常用的富文本编辑器vue-quill-editor
详见文档： https://www.npmjs.com/package/vue-quill-editor
（1）安装vue-quill-editor
cnpm install vue‐quill‐editor ‐‐save
（2）plugins下创建nuxt-quill-plugin.js
import Vue from 'vue'
import VueQuillEditor from 'vue‐quill‐editor/dist/ssr' Vue.use(VueQuillEditor)
（3）修改nuxt.config.js ,配置插件和样式
plugins: [
{ src: '~plugins/nuxt‐quill‐plugin.js', ssr: false }
],
// some nuxt config...
css: [
'quill/dist/quill.snow.css',
'quill/dist/quill.bubble.css',
'quill/dist/quill.core.css'
],
（4）pages/spit/submit.vue
<template>
<div class="wrapper release‐tc">
<div class="release‐box">
<h3>发布吐槽</h3>
<div class="editor">
<div class="quill‐editor"
:content="content"
@change="onEditorChange($event)"
@blur="onEditorBlur($event)"
@focus="onEditorFocus($event)"
@ready="onEditorReady($event)" v‐quill:myQuillEditor="editorOption">
</div>
<div class="btns">
<button class="sui‐btn btn‐danger btn‐release">发布</button>
</div>
<div class="clearfix">
</div>
</div>
</div>
<div class="clearfix">
</div>
</div>
</template>
<script>
import '~/assets/css/page‐sj‐spit‐submit.css'
export default {
data () {
return {
content: '',
editorOption: {
// some quill options
modules: {
toolbar: [
[{ 'size': ['small', false, 'large'] }],
['bold', 'italic'],
[{ 'list': 'ordered'}, { 'list': 'bullet' }],
['link', 'image']
]
}
}
}
},
mounted() {
console.log('app init, my quill insrance object is:', this.myQuillEditor)
/*setTimeout(() => { this.content = 'i am changed' }, 3000)*/ },
methods: { onEditorBlur(editor) { console.log('editor blur!', editor) },
onEditorFocus(editor) { console.log('editor focus!', editor) },
onEditorReady(editor) { console.log('editor ready!', editor) },
onEditorChange({ editor, html, text }) {
console.log('editor change!', editor, html, text)
this.content = html
}
}
}
</script>
<style>
.quill‐editor {
min‐height: 200px;
max‐height: 400px;
overflow‐y: auto;
}
</style>
（5）修改pages/spit/index.vue 链接到此页面
<router‐link class="sui‐btn btn‐block btn‐share" to="/spit/submit">发吐槽 </router‐link>
2.1.2 提交吐槽
（1）easyMock模拟数据
URL:spit/spit
Method: post
{
"code": 20000,
"flag": true,
"message": "执行成功"
}
（2）修改api/spit.js ，增加提交吐槽的方法
save(pojo) {
return request({
url: `/${group_name}/${api_name}`,
method: 'post',
data: pojo
})
}
（2）修改pages/spit/submit.vue 引入API
import spitApi from '@/api/spit'
在methods增加方法
save(){
spitApi.save({ content:this.content } ).then(res=>{
this.$message({
message: res.data.message,
type: (res.data.flag?'success':'error')
})
if(res.data.flag){
this.$router.push('/spit')
}
})
}
$router.push()的作用是路由跳转。
（3）发布按钮调用方法
<button class="sui‐btn btn‐danger btn‐release" @click="save">发布</button>
2.2 吐槽评论
2.2.1 评论弹出框
我们这里的评论弹出框使用elementUI的弹出框来实现
（1）修改pages/spit/_id.vue ,添加弹出框, 弹出框中放置富文本编辑器
<el‐dialog
title="评论"
:visible.sync="dialogVisible"
width="40%" >
<div class="quill‐editor"
:content="content"
@change="onEditorChange($event)"
v‐quill:myQuillEditor="editorOption">
</div> <
span slot="footer" class="dialog‐footer">
<el‐button @click="dialogVisible = false">取 消</el‐button>
<el‐button type="primary" @click="dialogVisible = false">确 定
</el‐button>
</span>
</el‐dialog>
为富文本编辑框添加样式：
<style>
.quill‐editor {
min‐height: 200px;
max‐height: 400px;
overflow‐y: auto;
}
</style>
（2）修改pages/spit/index.vue代码部分
data(){
return {
dialogVisible: false,
content: '',
editorOption: {
// some quill options
modules: {
toolbar: [
[{ 'size': ['small', false, 'large'] }],
['bold', 'italic'],
[{ 'list': 'ordered'}, { 'list': 'bullet' }],
['link', 'image']
]
}
}
}
},
methods:{
onEditorChange({ editor, html, text }) {
console.log('editor change!', editor, html, text)
this.content = html
}
}
（3）修改pages/spit/_id.vue 中的回复链接
在这里插入代码片
<a @click="dialogVisible=true;content=''"><i class="fa fa‐commenting" aria‐hidden="true"></i> {{pojo.comment}}</a>
2.2.2 提交评论
修改pages/spit/_id.vue ，增加提交回复的方法
save(){
spitApi.save({ content:this.content,parentid: this.pojo.id } ).then(res=>{ this.$message({
message: res.data.message,
type: (res.data.flag?'success':'error')
})
if(res.data.flag){
this.dialogVisible=false
spitApi.commentlist(this.pojo.id).then(res=>{ this.commentlist=res.data.data })
}
})
}
编辑提交按钮
<el‐button type="primary" @click="save">提交</el‐button>
3 问答频道
3.1 嵌套布局与标签导航
3.1.1 嵌套布局
（1）创建pages/qa.vue
<template>
<div>
<div class="tab‐nav ">
<div class="wrapper">
<ul class="fl sui‐nav nav‐tabs navbar‐dark">
<li class="active"><a href="#index" data‐toggle="tab">首页</a> </li>
<li><a href="#php" data‐toggle="tab">Php</a></li>
<li><a href="#js" data‐toggle="tab">Javascript </a></li>
<li><a href="#python" data‐toggle="tab">Python</a></li>
<li><a href="#java" data‐toggle="tab">Java</a></li> </ul>
<span class="fr more"><a href="./qa‐allTag.html" target="_blank">更多</a></span>
<div class="clearfix"></div>
</div>
</div>
<nuxt‐child/>
</div>
</template>
<script>
import '~/assets/css/page‐sj‐qa‐logined.css'
export default { }
</script>
（2）创建pages/qa/label/_label.vue
<template>
<div class="wrapper qa‐content">
<div class="fl left‐list">
<div class="tab‐content">
<div id="index" class="tab‐pane active">
<div class="tab‐bottom‐line">
<ul class="sui‐nav nav‐tabs">
<li class="active"><a href="#new" data‐toggle="tab">最新回答</a> </li>
<li><a href="#hot" data‐toggle="tab">热门回答</a></li>
<li><a href="#wait" data‐toggle="tab">等待回答</a></li>
</ul>
<div class="qa‐list">
<div class="tab‐content">
<div id="new" class="tab‐pane active">
<ul class="detail‐list">
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">12</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">luckness</span> <span>3</span>分钟前回答</p>
<p class="title"><a href="./qa‐detail.html" target="_blank">有关PHP初级进阶的问题？</a></p>
</div> <div class="other">
<ul class="fl sui‐tag">
<li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a> </p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">12</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">牛奶糖</span> <span>3</span>分钟前回答</p> <p class="title"><a href="./qa‐detail.html" target="_blank">springMVC的controller接收json数据失败</a></p>
</div>
<div class="other">
<ul class="fl sui‐tag">
<li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a> </p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">12</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">大白兔</span> <span>3</span>分钟前回答</p> <p class="title"><a href="./qa‐detail.html" target="_blank">监听器中timer查询数据库</a></p>
</div>
<div class="other">
<ul class="fl sui‐tag">
<li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a> </p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">34</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">luckness</span> <span>3</span>分钟前回答</p>
<p class="title"><a href="./qa‐detail.html" target="_blank">服务器上安装了一个考试系统ASP.NET,安装完成后访问不了，求助</a> </p>
</div>
<div class="other">
<ul class="fl sui‐tag">
<li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a> </p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">12</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">牛奶糖</span> <span>3</span>分钟前回答</p> <p class="title"><a href="./qa‐detail.html"target="_blank">springMVC的controller接收json数据失败</a></p>
</div>
<div class="other">
<ul class="fl sui‐tag"> <li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a> </p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
<li class="qa‐item">
<div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">12</p>
<p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">9</p>
<p>回答</p> </div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">大白兔</span> <span>3</span>分钟前回答</p> <p class="title"><a href="./qa‐detail.html" target="_blank">监听器中timer查询数据库</a></p>
</div>
<div class="other">
<ul class="fl sui‐tag">
<li>Php</li>
<li>Javascript</li>
</ul>
<div class="fr brower">
<p>浏览量 50 | 2017‐07‐05 15:09 来自 <a href="#">毕鹏 </a></p>
</div>
</div>
</div>
<div class="clearfix"></div> </li>
</ul>
</div>
<div id="hot" class="tab‐pane">
<p>热门回答</p>
</div>
<div id="wait" class="tab‐pane">
<p>等待回答</p>
</div>
</div>
</div>
</div>
</div>
<div id="php" class="tab‐pane">
php
</div>
<div id="js" class="tab‐pane">
Javascript
</div>
<div id="python" class="tab‐pane">
python
</div>
<div id="java" class="tab‐pane">
java
</div>
</div>
</div>
<div class="fl right‐tag">
<div class="block‐btn">
<p>今天，有什么好东西要和大家分享么?</p>
<a class="sui‐btn btn‐block btn‐share" href="./qa‐submit.html" target="_blank">发布问题</a>
</div>
<div class="hot‐tags">
<div class="head">
<h3 class="title">热门标签</h3>
</div>
<div class="tags">
<ul class="sui‐tag">
<li>Php</li>
<li>Javascript</li>
<li>Gif</li>
<li>Java</li>
<li>C#</li>
<li>iOS</li>
<li>C++</li>
</ul>
</div>
</div>
</div>
<div class="clearfix"></div>
</div>
</template>
（3）创建pages/qa/index.vue
<template>
<div></div>
</template>
<script>
export default {
created(){ this.$router.push('/qa/label/0') } }</script>
3.1.2 标签导航
（1）easyMock模拟数据
URL: base/label/toplist
Method: GET
{
"flag": true,
"code": 20000,
"data": [{
"id": "1", "labelname": "JAVA" },{ "id": "2", "labelname": "PHP" },{ "id": "3", "labelname": "前端" },{ "id": "4", "labelname": "Python" }
]
}
（2）编写标签API 创建api/label.js
import request from '@/utils/request' import {getUser} from '@/utils/auth' const api_group = 'base'
const api_name = 'label'
export default {
toplist() {
return request({
url:`/${api_group}/${api_name}/toplist`,
method: 'get'
})
}
}
（3）修改pages/qa.vue
<template>
<div>
<div class="tab‐nav ">
<div class="wrapper">
<ul class="fl sui‐nav nav‐tabs navbar‐dark">
<router‐link tag="li" to="/qa" active‐class="active" exact > <a> 首页</a></router‐link>
<router‐link tag="li" :to="'/qa/label/'+item.id" active‐ class="active" v‐for="(item,index) in labelList" :key="index" >
<a>{{item.labelname}} </a>
</router‐link>
</ul>
<span class="fr more"><a href="./qa‐allTag.html" target="_blank">更多</a></span>
<div class="clearfix">
</div>
</div>
</div>
<nuxt‐child/>
</div>
</template>
<script> import labelApi from '@/api/label'
export default {
asyncData ({ params, error}) {
return labelApi.toplist().then((res) => { return {labelList: res.data.data }
})
}
}
</script>
（4）创建pages/qa/index.vue
<template>
<div>
这里是问答列表
</div>
</template>
3.2 问答列表
3.2.1 最新问答列表
（1）easy-mock模拟数据 URL:/qa/problem/newlist/{label}/{page}/{size} Method:GET
{
"code": "@integer(60, 100)",
"flag": "@boolean",
"message": "@string",
"data": {
"total": "@integer(60, 100)", "rows|10": [{
"id": "@integer(1, 1000)",
"title": "@cword(20,30)",
"content": "@string",
"createtime": "@datetime", "updatetime": "@datetime",
"userid": "@integer(1, 1000)", "nickname": "小马",
"visits": "@integer(60, 100)", "thumbup": "@integer(60, 100)", "reply": "@integer(60, 100)",
"solve": "@string",
"replyname": "小牛",
"replytime": "@datetime"
}]
}
}
（2）API编写 创建api/problem.js
import request from '@/utils/request' const group_name = 'qa'
const api_name = 'problem'
export default { list(type,label,page,size){
return request({ url:`/${group_name}/${api_name}/${type}/${label}/${page}/${size}`, method: 'get'
})
}
}
（3）修改pages/qa/label/_label.vue 脚本部分
import problemApi from '@/api/problem' import axios from 'axios'
export default {
asyncData({params}){
return axios.all([problemApi.list('newlist',params.label,1,10), problemApi.list('hotlist',params.label,1,10), problemApi.list('waitlist',params.label,1,10) ] ).then( axios.spread(function(newlist,hotlist,waitlist ){ return { newlist:newlist.data.data.rows, hotlist:hotlist.data.data.rows, waitlist:waitlist.data.data.rows } })) } }
（4）修改pages/qa/label/_label.vue 模板部分
<ul class="detail‐list">
<li class="qa‐item" v‐for="(item,index) in newlist" :key="index"><div class="fl record">
<div class="number">
<div class="border useful">
<p class="usenum">{{item.thumbup}}</p> <p>有用</p>
</div>
<div class="border answer">
<p class="ansnum">{{item.reply}}</p> <p>回答</p>
</div>
</div>
</div>
<div class="fl info">
<div class="question">
<p class="author"><span class="name">{{item.replyname}} </span><span>{{item.replytime}}</span>回答</p>
<p class="title"><a href="./qa‐detail.html" target="_blank">{{item.title}}</a></p>
</div>
<div class="other">
<div class="fr brower">
<p>浏览量 {{item.visits}} | {{item.createtime}} 来自 <a href="#">{{item.nickname}} </a></p>
</div>
</div>
</div>
<div class="clearfix"></div> </li> </ul>
3.2.2 热门回答和等待回答列表
（1）定义属性type ,默认值为new
data(){ return { type:'new' } }
（2）修改选项卡
<ul class="sui‐nav nav‐tabs">
<li :class="type=='new'?'active':''"><a @click="type='new'">最新回 答</a></li>
<li :class="type=='hot'?'active':''"><a @click="type='hot'">热门回 答</a></li>
<li :class="type=='wait'?'active':''"><a @click="type='wait'">等待 回答</a></li> </ul>
（3）修改div的样式为动态获取
最新回答列表
<div id="new" :class="'tab‐pane '+(type=='new'?'active':'')"> ..... </div>
热门回答列表
<div id="hot" :class="'tab‐pane '+(type=='hot'?'active':'')">
等待回答列表
<div id="wait" :class="'tab‐pane '+(type=='wait'?'active':'')">
（4）参照最新问答列表编写热门回答列表与等待回答列表内容
<li class="qa‐item" v‐for="(item,index) in hotlist" :key="index"> .....
<li class="qa‐item" v‐for="(item,index) in waitlist" :key="index">
3.2.3 问答列表瀑布流
（1）修改pages/qa/label/_label.vue模板部分
<div class="qa‐list" v‐infinite‐scroll="loadMore"> ....
（2）修改pages/qa/label/_label.vue脚本部分
import problemApi from '@/api/problem' import axios from 'axios'
export default {
asyncData({params}){
return axios.all([
problemApi.list('newlist',params.label,1,10), problemApi.list('hotlist',params.label,1,10), problemApi.list('waitlist',params.label,1,10) ] ).then( axios.spread(function(newlist,hotlist,waitlist ){
return { newlist:newlist.data.data.rows, hotlist:hotlist.data.data.rows, waitlist:waitlist.data.data.rows, label:params.label //标签ID，我们需要记录下来 }
}))
},
data(){
return {
type:'new',
page_new: 1,//记录最新问题列表的页码 page_hot: 1,//记录热门问题列表的页码 page_wait: 1//记录等待回答列表的页码 } }
,methods:{
loadMore(){
if(this.type==='new'){
this.page_new++ problemApi.list('newlist',this.label,this.page_new,10).then( res=>{ this.newlist=this.newlist.concat( res.data.data.rows )
})
}if(this.type==='hot'){ this.page_hot++ problemApi.list('hotlist',this.label,this.page_hot,10).then( res=>{ this.hotlist=this.hotlist.concat( res.data.data.rows )
})
}
if(this.type==='wait'){ this.page_wait++ problemApi.list('waitlist',this.label,this.page_wait,10).then( res=>{ this.waitlist=this.waitlist.concat( res.data.data.rows )
})
}
}
}
}
3.3 问答详细页
学员实现
3.4 发布问题页
学员实现。使用富文本编辑器（参见吐槽模块的实现）
3.5 标签列表与关注标签
4 图片上传
4.1 Data URL
Data URL给了我们一种很巧妙的将图片“嵌入”到HTML中的方法。跟传统的用 img 标记将 服务器上的图片引用到页面中的方式不一样，在Data URL协议中，图片被转换成base64 编码的字符串形式，并存储在URL中，冠以mime-type。
传统方式：
<img src="images/myimg.gif ">
这种方式中， img 标记的 src 属性指定了一个远程服务器上的资源。当网页加载到浏览 器中 时，浏览器会针对每个外部资源都向服务器发送一次拉取资源请求，占用网络资 源。大多数的浏览器都有一个并发请求数不能超过4个的限制。这意味着，如果一个 网页 里嵌入了过多的外部资源，这些请求会导致整个页面的加载延迟。而使用Data URL技 术，图片数据以base64字符串格式嵌入到了页面中，与HTML成为一体，它的形式如下
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAM8AAAA4CAYAAABaFqz+AA AAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyJpVFh0WE1MOmNvbS5hZG9 iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5U Y3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9I kFkb2JlIFhNUCBDb3JlIDUuMy1jMDExIDY2LjE0NTY2MSwgMjAxMi8wMi8wNi0xNDo1NjoyNy AgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzA yLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1s bnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0c DovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG 9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWR vYmUgUGhvdG9zaG9wIENTNiAoV2luZG93cykiIHhtcE1NOkluc3RhbmNlSUQ9InhtcC5paWQ6 OUQyRTkxNThFRDEyMTFFNjhENUY5QjM0OUZGQzEwN0IiIHhtcE1NOkRvY3VtZW50SUQ9Inhtc C5kaWQ6OUQyRTkxNTlFRDEyMTFFNjhENUY5QjM0OUZGQzEwN0IiPiA8eG1wTU06RGVyaXZlZE Zyb20gc3RSZWY6aW5zdGFuY2VJRD0ieG1wLmlpZDo5RDJFOTE1NkVEMTIxMUU2OEQ1RjlCMzQ 5RkZDMTA3QiIgc3RSZWY6ZG9jdW1lbnRJRD0ieG1wLmRpZDo5RDJFOTE1N0VEMTIxMUU2OEQ1 RjlCMzQ5RkZDMTA3QiIvPiA8L3JkZjpEZXNjcmlwdGlvbj4gPC9yZGY6UkRGPiA8L3g6eG1wb WV0YT4gPD94cGFja2V0IGVuZD0iciI/Po4slv0AABviSURBVHja7F0JfBRF1u/puXJxCqIiiI D4LawIIq6KgooICh7ITRIIN6ui6KcsiiugCPrJp6KuohwJhFtQDhUPRFg5FJRDkfUAOUQFTAh KyDFX7/tnXieVSs9Mz6TD4W8ev6Knq6urqqvqX++oVxWbUkWUNmRoPbvD/ojd7minBQJHfT5v evbMmX8ocYrTn4QcVmaWOnhwEoHlCZfLNVC1qc5iT/EiT3Fx53mz4qCJ05+PbFZk0n/Q4EtcL uf0xISkG7x+b15xUfHY7JkzZsabN05x8IQGTX3iMkuSEhOv9fn9xYWFhRMJNFPCvXNr97ucdL mCQmsKzSk0pFCPQqKQ7CiFwxR+ofA1hc9Xv718T7y74nTWg6dfRobqsDveSEpOHmRTVbWooGC 9x+fttmD27PwQgKlFl54U7qRwkwQUs5RL4SMKyymsIDAVxbsvTmcVePplDGqTkJDwYYI7obbP 7/MVFBQMnj97VnYI0LSiy4MU+lJwWVjv3ynMpvAigehgvBvjdMaDJ3Xw4PFJSSnj7apq83g9O SSmXb0wK3OvAWguo8tTzGmqkrwUZlEYTyA6Gu/OOJ2R4EkbMvSd5KTkrorNphQVFX7n8RS3XJ iV5ZFAk0KXyRTuoWA/hd9xnMIjBKC4kSJOZw54+gwcqLqcri8TE5NaIXFhceFuj8dz2aKsrIA 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vue-quill-editor的图片上传默认采用Data URL方式。
4.2 辅助插件vue-quill-editor-upload
如果你不想使用Data URL方式存储图片，我们可以通过一个辅助插件vue-quill-editor- upload 来让vue-quill-editor实现传统方式的上传。 （1）安装：
cnpm install vue‐quill‐editor‐upload ‐‐save
（2）修改submit.vue 引入插件
import {quillRedefine} from 'vue‐quill‐editor‐upload'
（3）将editorOption的值改为{}
data () {
return {
content: '',
editorOption:{}//修改此处！
}
}
（4）新增created 钩子函数
created () {
this.editorOption = quillRedefine( { // 图片上传的设置
uploadConfig: {
action:'http://localhost:3000/upload', // 必填参数 图片上传地 址
// 必选参数 res是一个函数，函数接收的response为上传成功时服务器返 回的数据
// 你必须把返回的数据中所包含的图片地址 return 回去
res: (respnse) => {
return respnse.info
},
name: 'img' // 图片上传参数名
}
}
)
}
4.3 Multer（了解）
课程中提供了上传图片的服务端代码 upload-server ，我们可以先测试运行后，对照在 线文档阅读并理解代码（课程不要求学员独立编写此段代码）
cnpm install
npm run start
这段代码主要应用两项技术：
（1）Express --node.js的web框架 在线文档： http://www.expressjs.com.cn/4x/api.html
（2）Multer --Express官方推出的，用于multipart/form-data请求数据处理的中间件 在线文档： https://github.com/expressjs/multer/blob/master/doc/README-zh- cn.md
4.4 云存储解决方案-阿里云OSS
为了能够解决海量数据存储与弹性扩容，我们在十次方项目中采用云存储的解决方案- 阿 里云OSS。
4.4.1 准备工作
（1）申请阿里云账号并完成实名认证： 可以使用我们之前发短信用的阿里云账号。
（2）开通OSS: 登录阿里云官网。将鼠标移至产品找到并单击对象存储OSS打开OSS产 品详情页面。在OSS产品详情页中的单击立即开通。开通服务后，在OSS产品详情页面单 击管理控制台直接进入OSS管理控制台界面。您也可以单击位于官网首页右上方菜单栏的 控制台，进入阿里云管理控制台首页，然后单击左侧的对象存储OSS菜单进入OSS管理控 制台界面。
（3）创建存储空间
新建Bucket，命名为tensquare ，读写权限为公共读
4.4.2 代码编写
（1）安装ali-oss
cnpm install ali‐oss ‐‐save
cnpm install co ‐‐save
（2）修改file-upload-demo-master的server.js
var co = require('co');
var OSS = require('ali‐oss');
var client = new OSS({
accessKeyId: 'LTAIWaEERTRWSD2',
accessKeySecret: 'PznrHXxYvTcADAFFDDDJnoAokJ0NSWEWF',
endpoint: 'oss‐cn‐beijing.aliyuncs.com',
bucket: 'tensquare'
});
app.post('/upload', upload.single('img'), (req, res) =>
{
// 没有附带文件
if (!req.file) {
res.json({ ok: false });
return;
}
co(function* () {
var stream = fs.createReadStream(req.file.path);
var result = yield client.putStream(req.file.originalname, stream); console.log("result:"+result);
res.json({ ok: true , info: result.url})
}).catch(function (err) {
console.log(err);
});
});
co ：已同步的方式调用异步的代码 配合yield关键字使用，将异步结果直接返回。