element upload封装上传图片组件有两种方法
第一种是引入阿里云并返回图片地址
新建一个组件文件叫：imageUpload.vue
可以放在根目录src/components/upload目录里面
真实完整的路径：src/components/upload/imageUpload.vue
<template>
<div class="component-upload-image">
<el-upload
action=""
:http-request="handleBeforeUpload"
list-type="picture-card"
:limit="limit"
:on-error="handleUploadError"
:on-exceed="handleExceed"
:on-remove="handleRemove"
:show-file-list="true"
:file-list="fileList"
:on-preview="handlePictureCardPreview"
:class="{hide: this.fileList.length >= this.limit}"
>
<i class="el-icon-plus"></i>
</el-upload>
<!-- 上传提示 -->
<div class="el-upload__tip" slot="tip" v-if="showTip">
请上传
<template v-if="fileSize"> 大小不超过 <b style="color: #f56c6c">{
{
fileSize }}MB</b> </template>
<template v-if="fileType"> 格式为 <b style="color: #f56c6c">{
{
fileType.join("/") }}</b> </template>
的文件
</div>
<el-dialog
:visible.sync="dialogVisible"
title="预览"
width="800"
append-to-body
>
<img
:src="dialogImageUrl"
style="display: block; max-width: 100%; margin: 0 auto"
/>
</el-dialog>
</div>
</template>
<script>
import {
store } from '@/lib/upload';
import {
getDateLocation } from "@/utils/datetime"
export default {
props: {
value: [String, Object, Array],
// 图片数量限制
limit: {
type: Number,
default: 5,
},
// 大小限制(MB)
fileSize: {
type: Number,
default: 5,
},
// 文件类型, 例如['png', 'jpg', 'jpeg']
fileType: {
type: Array,
default: () => ["png", "jpg", "jpeg"],
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
}
},
data() {
return {
dialogImageUrl: "",
dialogVisible: false,
hideUpload: false,
baseUrl:'',
fileList: []
};
},
watch: {
value: {
handler(val) {
if (val) {
// 首先将值转为数组
const list = Array.isArray(val) ? val : this.value.split(',');
// 然后将数组转为对象数组
this.fileList = list.map(item => {
if (typeof item === "string") {
if (item.indexOf(this.baseUrl) === -1) {
item = {
name: this.baseUrl + item, url: this.baseUrl + item };
} else {
item = {
name: item, url: item };
}
}
return item;
});
} else {
this.fileList = [];
return [];
}
},
deep: true,
immediate: true
}
},
computed: {
// 是否显示提示
showTip() {
return this.isShowTip && (this.fileType || this.fileSize);
},
},
methods: {
// 删除图片
handleRemove(file, fileList) {
const findex = this.fileList.map(f => f.name).indexOf(file.name);
this.fileList.splice(findex, 1);
this.$emit("input", this.listToString(this.fileList));
},
// 上传成功回调
handleUploadSuccess(res) {
this.fileList.push({
name: res.data, url: res.data });
this.$emit("input", this.listToString(this.fileList));
this.loading.close();
},
// 上传前loading加载
handleBeforeUpload(obj) {
let file=obj.file;
let isImg = false;
if (this.fileType.length) {
let fileExtension = "";
if (file.name.lastIndexOf(".") > -1) {
fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
}
isImg = this.fileType.some(type => {
if (file.type.indexOf(type) > -1) return true;
if (fileExtension && fileExtension.indexOf(type) > -1) return true;
return false;
});
} else {
isImg = file.type.indexOf("image") > -1;
}
if (!isImg) {
this.$message.error(
`文件格式不正确, 请上传${
this.fileType.join("/")}图片格式文件!`
);
return false;
}
if (this.fileSize) {
const isLt = file.size / 1024 / 1024 < this.fileSize;
if (!isLt) {
this.$message.error(`上传头像图片大小不能超过 ${
this.fileSize} MB!`);
return false;
}
}
this.loading = this.$loading({
lock: true,
text: "上传中",
background: "rgba(0, 0, 0, 0.7)",
});
let random_name = "unification/icon/" + getDateLocation() + '/' + file.name;
var that = this;
return new Promise((resolve, reject) => {
async function put () {
try {
let result = await store().put(random_name, file);
that.fileList.push({
name: result.name, url: result.url });
that.$emit("input", that.listToString(that.fileList));
that.loading.close();
} catch (e) {
console.log(e);
}
}
put();
resolve(true)
})
},
// 文件个数超出
handleExceed() {
this.$message.error(`上传文件数量不能超过 ${
this.limit} 个!`);
},
// 上传失败
handleUploadError() {
this.$message({
type: "error",
message: "上传失败",
});
this.loading.close();
},
// 预览
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// 对象转成指定字符串分隔
listToString(list, separator) {
let strs = "";
separator = separator || ",";
for (let i in list) {
strs += list[i].url.replace(this.baseUrl, "") + separator;
}
return strs != '' ? strs.substr(0, strs.length - 1) : '';
}
}
};
</script>
<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
::v-deep.hide .el-upload--picture-card {
display: none;
}
// 去掉动画效果
::v-deep .el-list-enter-active,
::v-deep .el-list-leave-active {
transition: all 0s;
}
::v-deep .el-list-enter, .el-list-leave-active {
opacity: 0;
transform: translateY(0);
}
</style>
阿里云ali-oss配置
import { store } from '@/lib/upload';
const oss = require('ali-oss');
export function store(client){
return client = oss({
region: 'oss-cn-shenzhen',
accessKeyId: 'xxxx',//这里自己填阿里云的keyId
accessKeySecret: 'xxxxxx',//这里自己填阿里云的secret
bucket: 'xxxx'//这里自己填阿里云的bucket
});
}
import { getDateLocation } from "@/utils/datetime"
/**
*
* 获取系统时间格式
*/
export function getDateLocation (s) {
let nowDate = new Date();
let year = nowDate.getFullYear();
let month = nowDate.getMonth() + 1 < 10 ? "0" + (nowDate.getMonth() + 1)
: nowDate.getMonth() + 1;
let day = nowDate.getDate() < 10 ? "0" + nowDate.getDate() : nowDate
.getDate();
s = year + "-" + month + "-" + day; // "2018-03-26"
return s;
}
第二种是直接调用api接口上传图片
新建一个组件文件叫：imageUpload.vue
可以放在根目录src/components/upload目录里面
真实完整的路径：src/components/upload/imageUpload.vue
再新建一个叫 .env.development
# 开发环境配置
ENV = 'development'
VUE_APP_URL='https://xxxxx.cn/' //这里替换你自己实际请求的域名或ip
<template>
<div class="component-upload-image">
<el-upload
:action="uploadImgUrl"
list-type="picture-card"
:on-success="handleUploadSuccess"
:before-upload="handleBeforeUpload"
:limit="limit"
:on-error="handleUploadError"
:on-exceed="handleExceed"
name="file"
accept="image/*"
:on-remove="handleRemove"
:show-file-list="true"
:headers="headers"
:file-list="fileList"
:on-preview="handlePictureCardPreview"
:class="{hide: this.fileList.length >= this.limit}"
>
<i class="el-icon-plus"></i>
</el-upload>
<!-- 上传提示 -->
<div class="el-upload__tip" slot="tip" v-if="showTip">
请上传
<template v-if="fileSize"> 大小不超过 <b style="color: #f56c6c">{
{
fileSize }}MB</b> </template>
<template v-if="fileType"> 格式为 <b style="color: #f56c6c">{
{
fileType.join("/") }}</b> </template>
的文件
</div>
<el-dialog
:visible.sync="dialogVisible"
title="预览"
width="800"
append-to-body
>
<img
:src="dialogImageUrl"
style="display: block; max-width: 100%; margin: 0 auto"
/>
</el-dialog>
</div>
</template>
<script>
import {
getToken } from "@/utils/auth";
export default {
props: {
value: [String, Object, Array],
// 图片数量限制
limit: {
type: Number,
default: 5,
},
// 大小限制(MB)
fileSize: {
type: Number,
default: 5,
},
// 文件类型, 例如['png', 'jpg', 'jpeg']
fileType: {
type: Array,
default: () => ["png", "jpg", "jpeg"],
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
}
},
data() {
return {
dialogImageUrl: "",
dialogVisible: false,
hideUpload: false,
baseUrl:'',
uploadImgUrl: process.env.VUE_APP_URL+'api/common/image/upload/banner',
headers: {
Authorization: "Bearer " + getToken(),
},
fileList: []
};
},
watch: {
value: {
handler(val) {
if (val) {
// 首先将值转为数组
const list = Array.isArray(val) ? val : this.value.split(',');
// 然后将数组转为对象数组
this.fileList = list.map(item => {
if (typeof item === "string") {
if (item.indexOf(this.baseUrl) === -1) {
item = {
name: this.baseUrl + item, url: this.baseUrl + item };
} else {
item = {
name: item, url: item };
}
}
return item;
});
} else {
this.fileList = [];
return [];
}
},
deep: true,
immediate: true
}
},
computed: {
// 是否显示提示
showTip() {
return this.isShowTip && (this.fileType || this.fileSize);
},
},
methods: {
// 删除图片
handleRemove(file, fileList) {
const findex = this.fileList.map(f => f.name).indexOf(file.name);
this.fileList.splice(findex, 1);
this.$emit("input", this.listToString(this.fileList));
},
// 上传成功回调
handleUploadSuccess(res) {
this.fileList.push({
name: res.data, url: res.data });
this.$emit("input", this.listToString(this.fileList));
this.loading.close();
},
// 上传前loading加载
handleBeforeUpload(file) {
let isImg = false;
if (this.fileType.length) {
let fileExtension = "";
if (file.name.lastIndexOf(".") > -1) {
fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
}
isImg = this.fileType.some(type => {
if (file.type.indexOf(type) > -1) return true;
if (fileExtension && fileExtension.indexOf(type) > -1) return true;
return false;
});
} else {
isImg = file.type.indexOf("image") > -1;
}
if (!isImg) {
this.$message.error(
`文件格式不正确, 请上传${
this.fileType.join("/")}图片格式文件!`
);
return false;
}
if (this.fileSize) {
const isLt = file.size / 1024 / 1024 < this.fileSize;
if (!isLt) {
this.$message.error(`上传头像图片大小不能超过 ${
this.fileSize} MB!`);
return false;
}
}
this.loading = this.$loading({
lock: true,
text: "上传中",
background: "rgba(0, 0, 0, 0.7)",
});
},
// 文件个数超出
handleExceed() {
this.$message.error(`上传文件数量不能超过 ${
this.limit} 个!`);
},
// 上传失败
handleUploadError() {
this.$message({
type: "error",
message: "上传失败",
});
this.loading.close();
},
// 预览
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.dialogVisible = true;
},
// 对象转成指定字符串分隔
listToString(list, separator) {
let strs = "";
separator = separator || ",";
for (let i in list) {
strs += list[i].url.replace(this.baseUrl, "") + separator;
}
return strs != '' ? strs.substr(0, strs.length - 1) : '';
}
}
};
</script>
<style scoped lang="scss">
// .el-upload--picture-card 控制加号部分
::v-deep.hide .el-upload--picture-card {
display: none;
}
// 去掉动画效果
::v-deep .el-list-enter-active,
::v-deep .el-list-leave-active {
transition: all 0s;
}
::v-deep .el-list-enter, .el-list-leave-active {
opacity: 0;
transform: translateY(0);
}
</style>
最后：调用引入方法
可以在main.js注册上传图片
import ImageUpload from "@/components/ImageUpload"
Vue.component('ImageUpload', ImageUpload)
在vue文件引入
<image-upload v-model="dataForm.identityIs" :limit="1"></image-upload>
实际效果
可放大也可以直接删除 ，支持单图或多图。注意一下limit字段 1是单图 2以上是多图