目錄

• 文件上傳功能
• 上傳后端部分
• 上傳前端部分（vue添加vue.js和node.js，設(shè)置eslint）
• 文件下載功能
• 下載后端部分
• 下載前端部分
• 總結(jié)

文件上傳功能

上傳后端部分

（一）Models.py

from django.db import modelsclass FilesModel(models.Model): //模型名（默認表名）	name = models.CharField(max_length=20, default="")      //name，fle是字段名（file為上傳的文件）    file = models.FileField(upload_to="uploads/") //upload上傳功能實現(xiàn)，to上傳后保存的路徑    class Meta:db_table = "files_storage"     //自定義的表名ordering = ["-id"]     //按順序排列

（二）Serializer.py

使用 Django REST framework 實現(xiàn)后端 REST API，需創(chuàng)建序列化器 serializers.py，內(nèi)容如下：

from rest_framework import serializersfrom files import models   //files 是 app 的名字class FilesSerializer(serializers.ModelSerializer):    class Meta:model = models.FilesModel      //指定模型fields = "__all__"     //指定序列化的字段名

（三）views.py

from rest_framework.viewsets import ModelViewSetfrom files import models, serializersclass FileViewSet(ModelViewSet):    queryset = models.FilesModel.objects.all()     //返回全部字段    serializer_class = serializers.FilesSerializer //指定序列化器類型

（四）urls

1.項目總配置路徑下（settings.py 所在的路徑）編輯根路由配置文件 urls.py

from django.contrib import adminfrom django.urls import path, includeurlpatterns = [    path("admin/", admin.site.urls),    path("storage/", include("files.urls")) //網(wǎng)址前綴及指定某子app的url]

2.app為files 的路徑下新建 urls.py 文件，填寫路由配置：

from django.urls import include, pathfrom rest_framework import routersfrom files import viewsrouter = routers.DefaultRouter()router.register(r"files", views.FileViewSet)   //注冊路徑urlpatterns = [    path("", include(router.urls))]

（五）測試后端api

運行后臺服務(wù) python manage.py runserver 0.0.0.0:8000，訪問 http://xx.xx.xx.xx:8000/storage/files/，界面如下：

上傳前端部分（vue添加vue.js和node.js，設(shè)置eslint）

<template>  <div>    <el-label>名稱</el-label>    <el-input v-model="fileData.name" />    <el-upload      ref="upload"      drag           action="http://xx.xx.xx.xx:8000/storage/files/"      :data="fileData"      :auto-upload="false"      :on-success="onSuccess"         >      <i />      <div>將文件拖到此處，或<em>點擊上傳</em></div>    </el-upload>    <el-button size="small" type="success" @click="submitUpload">上傳到服務(wù)器</el-button>  </div></template><script>export default {  name: "UploadDemo",  data() {    return {      fileData: {name: ""      }    }  },  methods: {    submitUpload() {      this.$refs.upload.submit()    },    onSuccess() {      this.$message.success("上傳成功")    }  }}</script>

其中 el-upload 組件的 action 屬性用于指定后臺 API 的 URI；

:auto-upload 屬性用于設(shè)置是否自動上傳（這里設(shè)置為 false，手動觸發(fā)上傳動作）；

:on-success 屬性用于指定上傳成功后觸發(fā)的方法。

submitUpload() 中的 this.$refs.upload.submit() 方法觸發(fā)文件上傳動作。

其中 el-upload 組件的 :data 屬性用于指定文件上傳時附加的數(shù)據(jù)（類型為 JavaScript 對象）。

注意：

1.env.development文件里改成BASE_API = ‘/api’

2.除增刪改查外，上傳的接口在index.vue文件里寫了，不用額外在api文件夾里加接口

3.route里的函數(shù)調(diào)用后端接口

4.前端一個頁面可對應(yīng)后端多個接口

上傳完成，后臺數(shù)據(jù)如下：

[    {"file": "http://172.20.23.34:8000/storage/files/uploads/AnyDesk.exe","id": 19,"name": "測試文件"    },    {"file": "http://172.20.23.34:8000/storage/files/uploads/template.html","id": 18,"name": ""    },    {"file": "http://172.20.23.34:8000/storage/files/uploads/20171215091830_55126_hSnPtZR.png","id": 17,"name": ""    }]

文件下載功能

下載后端部分

views.py

    @action(methods=["get", "post"], detail=True)    def download(self, request, pk=None, *args, **kwargs):file_obj = self.get_object()response = FileResponse(open(file_obj.file.path, "rb"))return response

下載前端部分

download.vue

<template>  <el-table    :data="filelist.filter(data => !search || data.name.toLowerCase().includes(search.toLowerCase()))"     >    <el-table-column      label="序號"      prop="id"    />    <el-table-column      label="上傳時間"      prop="date"    />    <el-table-column      label="上傳用戶"      prop="auther"    />    <el-table-column      label="文件名"      prop="filename"    />    <el-table-column      align="right"    >      <template slot="header"><el-input  v-model="search"  size="mini"  placeholder="輸入關(guān)鍵字搜索"/>      </template>      <template slot-scope="scope"><el-button  size="mini"  @click="handleDown(scope.$index, scope.row)">Down</el-button><el-button  size="mini"  type="danger"  @click="handleDelete(scope.$index, scope.row)">Delete</el-button>      </template>    </el-table-column>  </el-table></template><script>import { getPkgsList } from "@/api/user"import { getToken } from "@/utils/auth"import { delpkg } from "@/api/user"import axios from "axios"export default {  data() {    return {      headers: {Authorization: "Bearer " + getToken()      },      // addForm: {      //   // 文件的數(shù)組      //   pics: []      // },      filelist: [],      search: "",      listLoading: true    }  },  created() {    this.fetchPkgsList()  },  methods: {    handleChange(file, filelist) {      this.filelist = filelist.slice(-3)    },    onSuccess() {      this.$message.success("上傳成功")    },    fetchPkgsList() {      this.listLoading = true      getPkgsList().then(response => {console.log("getPkgsList ========> ", response)this.filelist = response.data.resultsthis.listLoading = false      })    },    downloadFile(url, options = {}) {      return new Promise((resolve, reject) => {// console.log(`${url} 請求數(shù)據(jù)，參數(shù)=>`, JSON.stringify(options))axios.defaults.headers["Authorization"] = "Bearer " + getToken()axios({  method: "post",  url: url, // 請求地址  data: options, // 參數(shù)  responseType: "blob" // 表明返回服務(wù)器返回的數(shù)據(jù)類型}).then(  response => {    // console.log("下載響應(yīng)",response)    resolve(response.data.result)    debugger    const blob = new Blob([response.data])    // console.log(blob)    // let fileName = Date.parse(new Date()) + ".xlsx"    // 切割出文件名    const fileNameEncode = options.filename    // 解碼    const fileName = decodeURIComponent(fileNameEncode)    // console.log("fileName",fileName)    if (window.navigator.msSaveOrOpenBlob) {      // console.log(2)      navigator.msSaveBlob(blob, fileName)    } else {      // console.log(3)      var link = document.createElement("a")      link.href = window.URL.createObjectURL(blob)      link.download = fileName      link.click()      // 釋放內(nèi)存      window.URL.revokeObjectURL(link.href)    }  },  err => {    reject(err)  })      })    },    handleDown(index, row) {      const postUrl = "/api/files/" + (row.id) + "/download/"      const params = { filename: row.filename }      this.downloadFile(postUrl, params)    },    handleDelete(index, row) {      this.listLoading = true      // const i = this.addForm.pics.findIndex((x) => x.pic === row.file)      // this.addForm.pics.splice(i, 1)      this.$confirm(`確定移除 ${row.filename}？`)      delpkg(row.id).then(response => {// console.log("getPkgsList ========> ", response)// console.log(index)// console.log(this.filelist.length)this.filelist = this.filelist.slice(index, 1)this.fetchPkgsList()// console.log(this.filelist)this.listLoading = false      })    }  }}</script>

總結(jié)

到此這篇關(guān)于vue與django(drf)實現(xiàn)文件上傳下載功能的文章就介紹到這了,更多相關(guān)vue與django文件上傳下載內(nèi)容請搜索以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持！