3.上传图片（阿里云空间，oss验证）

 笔记

20240710   未验证，现在还没有阿里云空间，等买个sit环境就可以验证一下。

 前端

        页面

<!--页面-->
<el-form-item label="优惠券图片" prop="couponImg"><single-upload v-model="dataForm.couponImg"></single-upload>
</el-form-item><!--vue引入-->
import SingleUpload from "@/components/upload/singleUpload";<!--vue对象里加组件-->
components: { SingleUpload },<!--保存方法，couponImg就是url路径-->

        组件

<template> <div><!-- action必选参数，上传地址，bucket的外网访问域名 --><el-uploadaction="https://vivi-gulimall.oss-cn-hangzhou.aliyuncs.com":data="dataObj"list-type="picture":multiple="false" :show-file-list="showFileList":file-list="fileList":before-upload="beforeUpload":on-remove="handleRemove":on-success="handleUploadSuccess":on-preview="handlePreview"><el-button size="small" type="primary">点击上传</el-button><div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过10MB</div></el-upload><el-dialog :visible.sync="dialogVisible"><img width="100%" :src="fileList[0].url" alt=""></el-dialog></div>
</template>
<script>import {policy} from './policy'import { getUUID } from '@/utils'export default {name: 'singleUpload',props: {value: String},computed: {imageUrl() {return this.value;},imageName() {if (this.value != null && this.value !== '') {return this.value.substr(this.value.lastIndexOf("/") + 1);} else {return null;}},fileList() {return [{name: this.imageName,url: this.imageUrl}]},showFileList: {get: function () {return this.value !== null && this.value !== ''&& this.value!==undefined;},set: function (newValue) {}}},data() {return {dataObj: {policy: '',signature: '',key: '',ossaccessKeyId: '',dir: '',host: '',// callback:'',},dialogVisible: false};},methods: {emitInput(val) {this.$emit('input', val)},handleRemove(file, fileList) {this.emitInput('');},handlePreview(file) {this.dialogVisible = true;},beforeUpload(file) {let _self = this;return new Promise((resolve, reject) => {policy().then(response => {_self.dataObj.policy = response.data.policy;_self.dataObj.signature = response.data.signature;_self.dataObj.ossaccessKeyId = response.data.accessid;_self.dataObj.key = response.data.dir + getUUID() + '_${filename}';_self.dataObj.dir = response.data.dir;_self.dataObj.host = response.data.host;console.log("上传前请求服务端签名，得到结果：", _self.dataObj)resolve(true)}).catch(err => {reject(false)})})},handleUploadSuccess(res, file) {console.log("上传成功...")this.showFileList = true;this.fileList.pop();this.fileList.push({name: file.name, url: this.dataObj.host + '/' + this.dataObj.key.replace("${filename}",file.name) });this.emitInput(this.fileList[0].url);}}}
</script>
<style></style>