vue组件滚动加载教程（Vue组件封装上传图片和视频的示例代码）

<!--UploadImageVideo 分片上传    -->
<template>
  <li class="UploadImageVideo">
    <el-upload
      action
      :on-change="handleChange"
      :on-remove="handleRemove"
      :limit="limitFileNumber"
      :on-exceed="handleExceed"
      :file-list="_fileList"
      :http-request="handleHttpRequest"
      :before-upload="handleBeforeUpload"
      :multiple="isMultiple"
    >
      <el-button slot="trigger" size="small" type="primary">选择文件</el-button>
      <li slot="tip" class="el-upload__tip">{{ tip }}</li>
    </el-upload>
 
    <el-dialog
      title="上传进度"
      :visible.sync="dialogTableVisible"
      :close-on-click-modal="false"
      :modal-append-to-body="false"
    >
      <el-progress :text-inside="true" :stroke-width="26" :percentage="percentage"></el-progress>
    </el-dialog>
  </li>
</template>
 
<script>
import { uuid } from "vue-uuid";
const OSS = require("ali-oss");
 
export default {
  name: "",
  components: {},
  props: {
    region: {
      type: String,
      default: "oss-cn-chengdu"
    },
    accessKeyId: {
      type: String,
      default: "xxx"
    },
    accessKeySecret: {
      type: String,
      default: "xxx"
    },
    //存储位置
    bucket: {
      type: String,
      required: true
    },
    currentUrls: {
      type: Array,
      default: () => [],
      required: true
    },
    //限制上传文件数量
    limitFileNumber: {
      type: Number,
      default: 1
    },
    //是否支持多选
    isMultiple: {
      type: Boolean,
      default: false
    },
    //文件格式
    fileType: {
      type: String,
      default: ""
    },
    //提示
    tip: {
      type: String
    }
  },
  data() {
    return {
      client: new OSS({
        region: this.region,
        accessKeyId: this.accessKeyId,
        accessKeySecret: this.accessKeySecret,
        bucket: this.bucket
      }),
      percentage: 0,
      dialogTableVisible: false,
      fileList: []
    };
  },
  computed: {
    //注意：计算属性里面慎用console.log()来打印，因为有可能打印的变量是依赖某个属性而出现该计算属性重复调用！！！！！！
    _fileList() {
      const arr = [];
      //一定要this.currentUrls判断一下是否非空，否则要报错
      if (this.currentUrls.length !== 0) {
        for (const item of this.currentUrls) {
          let { pathname } = new URL(item);
          arr.push({ name: decodeURIComponent(pathname), url: item });
        }
      }
 
      this.fileList = arr; //这行代码很重要！！
      return arr;
    }
  },
  created() {},
  mounted() {},
  methods: {
    handleChange(file, fileList) {
      this.fileList = fileList;
    },
    handleRemove(file, fileList) {
      this.fileList = fileList;
    },
    handleExceed(files, fileList) {
      this.$message.warning(
        `当前限制选择 ${this.limitFileNumber} 个文件，本次选择了 ${
          files.length
        } 个文件，共选择了 ${files.length + fileList.length} 个文件`
      );
    },
 
    //注意：为了让自定义上传handleHttpRequest生效，需满足：
    // 1、设置:auto-upload='true'或者不写这个属性，因为它默认为true  2、设置action='#'或者直接写action
    handleHttpRequest(file) {
      //虽然没有内容，但是这个函数不能少！
    },
    //注意：自定义上传handleHttpRequest必须要生效，才会触发before-upload钩子函数
    handleBeforeUpload(file) {
      if (this.fileType == "image") {
        let { type, size, name } = file;
        let i.jpg" alt="vue组件滚动加载教程（Vue组件封装上传图片和视频的示例代码）" border="0" />

<UploadImageVideo
  ref="ref_UploadImageVideo"
  bucket="xxx"
  :currentUrls="formData.imgurl"
  :limitFileNumber="3"
  tip="1、最多上传3张照片; 2、上传图片只能是.jpg" alt="vue组件滚动加载教程（Vue组件封装上传图片和视频的示例代码）" border="0" />

<!--userManage-->
<template>
  <li class="userManage">
    <el-card>
      <li style="margin-bottom: 10px">
        <el-input
          v-model="searchName"
          clearable
          placeholder="输入用户名称搜索"
          style="width: 200px; margin-right: 10px"
        />
        <el-button
          sizi="mini"
          type="success"
          icon="el-icon-search"
          @click="searchUser(searchName)"
        >搜索</el-button>
        <el-button
          sizi="mini"
          type="warning"
          icon="el-icon-refresh-left"
          @click="searchName = ''"
        >重置</el-button>
        <el-button sizi="mini" @click="handleAdd()" type="primary" icon="el-icon-plus">新增</el-button>
        <el-button @click="getUserList()" sizi="mini" icon="el-icon-refresh" style="float: right">刷新</el-button>
      </li>
      <el-table :data="tableData" border v-loading="isLoading">
        <el-table-column label="用户名" prop="username" align="center" width="150px"></el-table-column>
        <el-table-column label="密码" prop="password" align="center"></el-table-column>
        <el-table-column label="图片" align="center">
          <template slot-scope="scope">
            <li
              style="
                display: flex;
                justify-content: space-around;
                flex-flow: row wrap;
              "
            >
              <el-image
                style="width: 50px; height: 50px"
                v-for="(item, index) in scope.row.imgurl"
                :key="index"
                :src="item"
                :preview-src-list="scope.row.imgurl"
              ></el-image>
              <!-- <a :href="scope.row.imgurl" rel="external nofollow"  target="_blank">{{scope.row.imgurl}}</a> -->
            </li>
          </template>
        </el-table-column>
        <el-table-column label="操作" align="center">
          <template slot-scope="scope">
            <el-button size="mini" @click="showEditDialog(scope.row)">
              <i class="el-icon-edit" /> 编辑
            </el-button>
            <el-button size="mini" type="danger" @click="handleDelete(scope.row)">
              <i class="el-icon-delete" /> 删除
            </el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <UserManageDialog :dialog="dialog" :formData="formData" @addUser="addUser" @editUser="editUser"></UserManageDialog>
  </li>
</template>
 
<script>
import UserManageDialog from "./userManageDialog.vue";
import { client_alioss, deleteMultiFiles } from "@/utils/alioss.js";
 
import {
  addUser,
  getUserList,
  editUser,
  deleteUser,
  searchUser
} from "@/api/userManage/index";
export default {
  name: "userManage",
  components: { UserManageDialog },
  data() {
    return {
      searchName: "",
      isLoading: false,
      dialog: {
        show: false,
        title: ""
      },
      formData: {},
      tableData: [
        {
          _id: "",
          username: "admin",
          password: "123",
          imgurl: []
        }
      ],
      currentImgs: []
    };
  },
  props: {},
  created() {},
  mounted() {
    this.getUserList();
  },
  computed: {},
  methods: {
    //获取用户列表
    async getUserList() {
      this.isLoading = true;
      let { data } = await getUserList();
      this.tableData = data.data;
      this.isLoading = false;
    },
 
    //打开新增用户窗口
    handleAdd() {
      this.dialog = {
        show: true,
        title: "新增用户",
        option: "add"
      };
      this.formData = {
        username: "",
        password: "",
        imgurl: []
      };
    },
    //打开编辑用户窗口
    showEditDialog(row) {
      this.currentImgs = row.imgurl;
 
      this.dialog = {
        show: true,
        title: "编辑用户",
        option: "edit"
      };
      this.formData = {
        _id: row._id,
        username: row.username,
        password: row.password,
        imgurl: row.imgurl
      };
    },
    //新增用户
    async addUser(urls) {
      this.formData.imgurl = urls;
 
      await addUser(this.formData);
      this.dialog.show = false;
      this.$notify({
        title: "成功",
        message: "新增用户成功！",
        type: "success"
      });
      this.getUserList();
    },
    //编辑用户
    async editUser(urls) {
      this.formData.imgurl = urls;
 
      await editUser(this.formData, this.formData._id); //更新数据库，尤其是图片url
 
      this.dialog.show = false;
      this.$notify({
        title: "成功",
        message: "编辑用户成功！",
        type: "success"
      });
      this.getUserList();
    },
    //删除用户
    handleDelete({ _id }) {
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(async () => {
          this.$message({
            type: "success",
            message: "删除成功!",
            showClose: true
          });
          let {
            data: { imgurl }
          } = await deleteUser(_id);
 
          //删除服务器中的文件。传入待删除的url数组
          await deleteMultiFiles(imgurl);
 
          this.getUserList();
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
            showClose: true
          });
        });
    },
    //根据用户名查询
    async searchUser(searchName) {
      this.isLoading = true;
      let { data } = await searchUser({
        searchName
      });
      this.tableData = data.data;
      this.isLoading = false;
    }
  },
  watch: {}
};
</script>
 
<style lang="scss" scoped>
.userManage {
}
</style>

<!--userManageDialog   -->
<template>
  <li class="userManageDialog">
    <el-dialog :title="dialog.title" width="45%" :visible.sync="dialog.show" v-if="dialog.show">
      <el-form ref="ref_form_userManage" :model="formData" :rules="rules" label-width="100px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="formData.username" autocomplete="off" style="width: 90%"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="formData.password" autocomplete="off" style="width: 90%"></el-input>
        </el-form-item>
        <el-form-item label="图片" prop="imgurl">
          <!-- fileType属性不写的话，表示图片、视频都可上传。fileType="image"表示只能上传图片。fileType="video"表示只能上传视频 -->
          <UploadImageVideo
            ref="ref_UploadImageVideo"
            bucket="bucket-lijiang-test"
            :currentUrls="formData.imgurl"
            :limitFileNumber="3"
            tip="1、最多上传3张照片; 2、上传图片只能是.jpg" alt="vue组件滚动加载教程（Vue组件封装上传图片和视频的示例代码）" border="0" />

import { uuid } from 'vue-uuid';
const OSS = require("ali-oss");
 
let client = new OSS({
    region: "oss-cn-chengdu",
    accessKeyId: "LTAI5tQPHvixV8aakp1vg8Jr",
    accessKeySecret: "xYyToToPe8UFQMdt4hpTUS4PNxzl9S",
    bucket: "bucket-lijiang-test",
 
});
 
export const client_alioss = client;
 
 
//删除文件数组
export async function deleteMultiFiles(urls = []) {
    let arr_pathname = [];
    if (urls.length !== 0) {
        for (const item of urls) {
            //不要用let url=require("url");url.parse();已失效。要用new URL()
            let { pathname } = new URL(item);
            // decodeURIComponent()函数将中文乱码转为中文
            arr_pathname.push(decodeURIComponent(pathname));
        }
        await client.deleteMulti(arr_pathname);
    }
}

import request from '@/utils/request'
//  获取用户列表
export function getUserList() {
    return request({
        url: '/api/userManage',
        method: 'get'
    })
}
 
//  新增用户
export function addUser(data) {
    return request({
        url: '/api/userManage',
        method: 'post',
        data
    })
}
 
//  编辑用户
export function editUser(data, _id) {
    return request({
        url: `/api/userManage/${_id}`,
        method: 'put',
        data
    })
}
 
//  删除用户
export function deleteUser(_id) {
    return request({
        url: `/api/userManage/${_id}`,
        method: 'delete'
    })
}
 
//  根据关键字查询
export function searchUser(data) {
    return request({
        url: `/api/userManage/search`,
        method: 'get',
        params: data
    })
}

const router = require('koa-router')()
 
const User = require("../models/User"); //引入模块模型
router.prefix('/userManage')
 
//获取用户列表
router.get('/', async (ctx, next) => {
    let data = await User.find({})
    ctx.body = {
        code: 200,
        message: "请求成功",
        data,
    }
})
//新增用户
router.post('/', async (ctx, next) => {
    let { username, password, imgurl } = ctx.request.body;
    await User.create({ username, password, imgurl })
    ctx.body = { code: 200, message: "新增成功" }
})
//编辑用户
router.put('/:_id', async (ctx, next) => {
    let { username, password, imgurl } = ctx.request.body;
    let { _id } = ctx.params
 
    await User.findByIdAndUpdate(_id, { username, password, imgurl })
    ctx.body = { code: 200, message: "编辑成功" }
})
//删除用户
router.delete('/:_id', async (ctx, next) => {
    let { _id } = ctx.params;
    let { imgurl } = await User.findByIdAndDelete(_id)
    ctx.body = { code: 200, message: "删除成功", imgurl }
 
})
 
//根据关键字查询用户。模糊查询
 
router.get('/search', async (ctx, next) => {
    let { searchName } = ctx.request.query;
 
    let data = await User.find({ username: { $regex: searchName } })
    ctx.body = { code: 200, message: "查询成功", data }
})
module.exports = router