简述
使用过若依框架的，一定知道若依前端框架上传图片的样式，是一个正方形加号图片，但是如果你要使用自定义样式呢。
比如将下面这个图进行修改呢
修改后的样式
你可以直接找到element-ui 修改上传图片的组件，也可以加入新的组件，让两个都存在
代码
<template>
<div class="component-upload-image">
<el-upload
multiple
drag
:action="uploadImgUrl"
list-type="picture-card"
:on-success="handleUploadSuccess"
:before-upload="handleBeforeUpload"
:limit="limit"
:on-error="handleUploadError"
:on-exceed="handleExceed"
ref="imageUpload"
:on-remove="handleDelete"
:show-file-list="true"
:headers="headers"
:file-list="fileList"
:on-preview="handlePictureCardPreview"
:class="{hide: this.fileList.length >= this.limit}"
>
<div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
</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 {
number: 0,
uploadList: [],
dialogImageUrl: "",
dialogVisible: false,
hideUpload: false,
uploadImgUrl: process.env.VUE_APP_BASE_API + "/common/upload", // 上传的图片服务器地址
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") {
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: {
// 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.$modal.msgError(`文件格式不正确, 请上传${ 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.$modal.msgError(`上传头像图片大小不能超过 ${ this.fileSize} MB!`);
return false;
}
}
this.$modal.loading("正在上传图片，请稍候...");
this.number++;
},
// 文件个数超出
handleExceed() {
this.$modal.msgError(`上传文件数量不能超过 ${ this.limit} 个!`);
},
// 上传成功回调
handleUploadSuccess(res, file) {
console.log( res)
console.log( res.code)
if (res.code === 200) {
this.uploadList.push({
name: res.url, url: res.url });
this.uploadedSuccessfully();
} else {
this.number--;
this.$modal.closeLoading();
this.$modal.msgError(res.msg);
this.$refs.imageUpload.handleRemove(file);
this.uploadedSuccessfully();
}
},
// 删除图片
handleDelete(file) {
const findex = this.fileList.map(f => f.name).indexOf(file.name);
if (findex > -1) {
this.fileList.splice(findex, 1);
this.$emit("input", this.listToString(this.fileList));
}
},
// 上传失败
handleUploadError() {
this.$modal.msgError("上传图片失败，请重试");
this.$modal.closeLoading();
},
// 上传结束处理
uploadedSuccessfully() {
if (this.number > 0 && this.uploadList.length === this.number) {
this.fileList = this.fileList.concat(this.uploadList);
this.uploadList = [];
this.number = 0;
this.$emit("input", this.listToString(this.fileList));
this.$modal.closeLoading();
}
},
// 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) {
if (list[i].url) {
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);
}
::v-deep .el-upload-list--picture-card .el-upload-list__item{
width: 360px;
height: 173px;
}
::v-deep .el-upload--picture-card{
width: 360px;
height: 173px;
}
</style>
