使用七牛云提供的[Node.js SDK](https://developer.qiniu.com/kodo/1289/nodejs)实现文件上传
npm/cnpm install qiniu
or
yarn add qiniu
// 七牛云配置文件
const qiniu = require('qiniu');
// 创建上传凭证(accessKey 和 secretKey在七牛云个人中心中有,blog 是七牛云创建的空间名称)
const accessKey = 'xxxxxxx'; // ak密钥
const secretKey = 'xxxx'; // sk密钥
const mac = new qiniu.auth.digest.Mac(accessKey, secretKey);
const options = {
scope: 'blog' // 存储空间的名字
};
const putPolicy = new qiniu.rs.PutPolicy(options);
const uploadToken = putPolicy.uploadToken(mac);
module.exports = {
uploadToken // 导出的是七牛云生成的token
};
// 前端获取到七牛云返回的token
const express = require('express');
// 定义路由级中间件
const router = express.Router();
const uploadToken = require('./qiniu')
router.get('/getQiniuToken', (req, res) => {
res.json({
code: 200,
data: uploadToken.uploadToken,
messages: '获取成功'
});
});
module.exports = router;
//1.引入express模块
const express = require('express');
const mongoose = require('mongoose');
const bodyParse = require('body-parser');
const mongoObj = {
hostName: 'xxx', // 数据库地址
dataBaseName: 'xxx', // 数据库名称
username: 'xxx', // 用户名称
password: 'xxx' // 用户密码
};
mongoose
.connect(`mongodb://${mongoObj.username}:${mongoObj.password}@${mongoObj.hostName}/${mongoObj.dataBaseName}`, {
useNewUrlParser: true,
useUnifiedTopology: true
})
.then(() => console.log('数据库连接成功!'))
.catch((err) => console.log('err', err));
mongoose.set('strictQuery', true);
//创建app对象
const app = express();
app.use(bodyParse.json());
app.use(bodyParse.urlencoded({ extended: true }));
// 定义服务启动接口
app.listen(8098, () => {
console.log('app 8098');
});
// 引入定义的路由并应用
const qiniuToken = require('./routes/qiniuToken');
app.use('/api', qiniuToken);
注(踩坑记):我这里的MongoDB的数据库,会存在一个时不时就被一些无聊的人黑的问题,所以我加了用户名和密码认证,换了端口号,做了每天备份的操作,所以使用数据库的时候一定要注意这个问题。
import request from '@/utils/request';
// 获取七牛云token
export function getQiniuToken(params) {
return request({
url: '/getQiniuToken',
method: 'get',
params
});
}
// 上传文件
export function uploadFile(data) {
return request({
url: import.meta.env.VITE_APP_FILE_UPLOAD_API, // 七牛云上传地址 目前我用的华南地区为(https://upload-z2.qiniup.com)
method: 'post',
headers: { 'Content-Type': 'multipart/form-data' },
data
});
}
<template>
<div class="upload-box">
<el-upload class="upload-demo" drag :action="upload.action" :http-request="httpRequestFun" :auto-upload="true" :before-upload="beforeUpload">
<el-icon class="el-icon--upload"><upload-filled /></el-icon>
<div class="el-upload__text">Drop file here or <em>click to upload</em></div>
<template #tip>
<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
</template>
</el-upload>
</div>
</template>
<script setup>
import { ref } from 'vue';
import moment from 'moment';
import { getQiniuToken, uploadFile } from '@/api/upload';
import { UploadFilled } from '@element-plus/icons-vue';
const upload = ref({
action: import.meta.env.VITE_APP_FILE_UPLOAD_API, // 华南地区
httpRequest: import.meta.env.VITE_APP_FILE_PREVIEW_API // 自定义域名
});
const httpRequestFun = async (req) => {
const { data } = await getQiniuToken();
const formData = new FormData();
const fileName = `daily-photos/${moment(new Date()).format('YYYYMMDD')}/${req.file.name}`; // /代表目录
formData.append('file', req.file);
formData.append('token', data); // 获取到的七牛云token
formData.append('key', fileName); // 文件名称
const res = await uploadFile(formData);
console.log(res);
console.log(upload.value.httpRequest + '/' + res.data.key); // 预览地址
};
</script>
<style lang="scss" scoped>
.upload-box {
width: 200px;
height: 150px;
margin: 0 auto;
}
</style>