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我的项目在须要应用到大文件上传时,抉择通过前端直连阿里 Oss,个人感觉是个不错的抉择。
一方面不须要本人搭建文件服务器,另一个能节约服务器的带宽压力。
在这记录一下,本人写的 Oss 图片上传组件
获取 Token
虽说是前端直连,然而 Token 还是从后盾获取的。这个时候就须要后盾大哥搞个获取 Oss 的 Token 接口,接下来就能够欢快地上传图片啦。
import {getOssToken} from "@/util/common";
const OSS = require("ali-oss");
let client;
created() {getOssToken().then((res) => {
client = new OSS({
// yourRegion 填写 Bucket 所在地区。以华东 1(杭州)为例,Region 填写为 oss-cn-hangzhou。region: "oss-cn-hangzhou",
// 从 STS 服务获取的长期拜访凭证。长期拜访凭证包含长期拜访密钥(AccessKeyId 和 AccessKeySecret)和平安令牌(SecurityToken)。accessKeyId: res.data.accessKeyId,
accessKeySecret: res.data.accessKeySecret,
stsToken: res.data.securityToken,
// 填写 Bucket 名称。bucket: "Bucket",
});
});
},
上传图片用到的还是咱们的相熟的 el-upload
<el-upload
class="avatar-uploader"
action="#"
ref="upload"
v-loading="loading"
list-type="picture-card"
:on-success="handleSuccess"
:before-upload="uploadBefore"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
:file-list="imgList"
>
<i class="el-icon-plus"></i>
</el-upload>
次要的上传办法就是扭转 el-upload 的默认上传办法
// oss 上传图片
async uploadBefore(file, loading, column) {
this.loading = true;
let fileName = this.product + '/' + new Date().getTime() + file.name;
let result = await client.put("/picture/" + fileName, file);
this.imgList.push({
name: fileName,
url: this.url + fileName,
fileName: fileName,
});
let _this = this;
setTimeout(function () {_this.loading = false;}, 600);
},
残缺代码如下
<template>
<div>
<el-upload
class="avatar-uploader"
action="#"
ref="upload"
v-loading="loading"
list-type="picture-card"
:on-success="handleSuccess"
:before-upload="uploadBefore"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
:file-list="imgList"
>
<i class="el-icon-plus"></i>
</el-upload>
<el-dialog
:visible.sync="dialogVisible"
:modal-append-to-body="false"
:append-to-body="true"
>
<img width="100%" :src="dialogImageUrl" alt="" />
</el-dialog>
</div>
</template>
<script>
import {getOssToken} from "@/util/common";
const OSS = require("ali-oss");
let client;
export default {
name: "uploadImg",
props: {
product: {default: function () {return '0'},
type: String
}
},
created() {
this.loading = true;
getOssToken().then((res) => {
this.loading = false;
client = new OSS({
// yourRegion 填写 Bucket 所在地区。以华东 1(杭州)为例,Region 填写为 oss-cn-hangzhou。region: "oss-cn-hangzhou",
// 从 STS 服务获取的长期拜访凭证。长期拜访凭证包含长期拜访密钥(AccessKeyId 和 AccessKeySecret)和平安令牌(SecurityToken)。accessKeyId: res.data.accessKeyId,
accessKeySecret: res.data.accessKeySecret,
stsToken: res.data.securityToken,
// 填写 Bucket 名称。bucket: "Bucket",
});
});
},
data() {
return {
loading: false,
dialogVisible: false,
src: "",
imgList: [],
dialogImageUrl: "",
url: "picture/",
};
},
methods: {handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// oss 上传图片
async uploadBefore(file, loading, column) {
this.loading = true;
let fileName = this.product + '/' + new Date().getTime() + file.name;
let result = await client.put("/picture/" + fileName, file);
this.imgList.push({
name: fileName,
url: this.url + fileName,
fileName: fileName,
});
let _this = this;
setTimeout(function () {_this.loading = false;}, 600);
},
uploadAfter(res, loading, column) {},
handleRemove(file, fileList) {this.imgList.forEach((item, index) => {if (item.fileName == file.fileName) {this.imgList.splice(index, 1);
}
});
},
clearFiles() {this.imgList = []
this.$refs.upload.clearFiles();},
getImList() {return this.imgList;},
// 上传胜利
handleSuccess(res, file) {
this.imagesUrl = res.data;
// 图片门路返回给父组件
return this.imgList;
},
// 上传胜利之前 对图片格式要求
beforeAvatarUpload(file) {
const isPNG = file.type === "image/png";
const isJPG = file.type === "image/jpeg";
const isLt2M = file.size / 1024 / 1024 < 2;
if (!isPNG && !isJPG) {this.$message.error("上传图片只能是 JPG 格局和 PNG 格局!");
}
if (!isLt2M) {this.$message.error("上传图片大小不能超过 2MB!");
}
return (isPNG && isLt2M) || (isJPG && isLt2M);
},
},
};
</script>
正文完