1、先上代码：vueUpload.js
var dom = `<div class="upload-file">
<el-upload :action="uploadFileUrl" :before-upload="handleBeforeUpload" :file-list="fileList" :limit="limit"
:on-error="handleUploadError" :on-exceed="handleExceed" :on-success="handleUploadSuccess"
:show-file-list="false" :headers="headers" class="upload-file-uploader" ref="upload">
<!-- 上传按钮 -->
<el-button size="mini" type="primary">选取文件</el-button>
<!-- 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-upload>
<!-- 文件列表 -->
<div>
<div :key="file.uid" class="el-upload-list__item ele-upload-list__item-content" v-for="(file, index) in list"
v-if="file.url != null" style="display:flex;justify-content:space-between;align-item:center;max-width:300px;over-flow:hidden;text-overflow:ellipsis;white-space:nowrap;border: 1px solid #ddd;padding: 0 10px;cursor: pointer;">
<el-link :href="file.url" :underline="false" target="_blank">
<span class="el-icon-document"> {{ file.name }} </span>
</el-link>
<div class="ele-upload-list__item-content-action">
<el-link :underline="false" @click="handleDelete(index)" type="danger">删除</el-link>
</div>
</div>
</div>
</div>`
var demoComponent = Vue.extend({
template:dom,
props: {
// 值
value: [String, Object, Array],
// 大小限制(MB)
fileSize: {
type: Number,
default: 5,
},
// 文件类型, 例如['png', 'jpg', 'jpeg']
fileType: {
type: Array,
default: () => ["doc", "xls", "ppt", "txt", "pdf"],
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
},
limit: {
type: Number,
default: 9
}
},
data:function(){
return {
uploadFileUrl: '/file/rest/common/upload', // 上传的图片服务器地址
headers: {
Authorization: 'Bearer 123'
},
fileList: [],
}
},
created() {
this.fileList = this.list;
},
mounted() {
console.log(this);
},
computed: {
// 是否显示提示
showTip() {
return this.isShowTip && (this.fileType || this.fileSize);
},
// 列表
list() {
let temp = 1;
if (this.value) {
const list = this.value;
return list.map((item) => {
item.name = item.fileName
item.url = item.fileUrl
item.uid = item.uid || new Date().getTime() + temp++;
return item;
});
} else {
this.fileList = [];
return [];
}
},
},
methods:{
// 上传前校检格式和大小
handleBeforeUpload(file) {
// 校检文件类型
if (this.fileType) {
let fileExtension = "";
if (file.name.lastIndexOf(".") > -1) {
fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
}
const isTypeOk = this.fileType.some((type) => {
if (file.type.indexOf(type) > -1) return true;
if (fileExtension && fileExtension.indexOf(type) > -1) return true;
return false;
});
if (!isTypeOk) {
this.$message.error(`文件格式不正确, 请上传${this.fileType.join("/")}格式文件!`);
return false;
}
}
// 校检文件大小
if (this.fileSize) {
const isLt = file.size / 1024 / 1024 < this.fileSize;
if (!isLt) {
this.$message.error(`上传文件大小不能超过 ${this.fileSize} MB!`);
return false;
}
}
return true;
},
// 文件个数超出
handleExceed(e) {
if(this.limit == 1) {
this.$message.error(`只能上传一个文件,请先删除原文件后重新上传!`);
} else {
this.$message.error(`上传文件数量不能超过 ${props.limit} 个!`);
}
},
// 上传失败
handleUploadError(err) {
this.$message.error("上传失败, 请重试");
},
// 上传成功回调
handleUploadSuccess(res, file) {
this.fileList.push({name:res.data.name, url:res.data.url, fileName:res.data.name, fileUrl:res.data.url})
this.$message.success("上传成功");
this.$emit("input", this.fileList);
},
// 删除文件
handleDelete(index) {
this.fileList.splice(index, 1);
this.$emit("input", this.fileList);
},
// 获取文件名称
getFileName(name) {
if (name.lastIndexOf("/") > -1) {
return name.slice(name.lastIndexOf("/") + 1).toLowerCase();
} else {
return "";
}
}
},
})
Vue.component('vue-upload',demoComponent)
2、在html中使用，在html中引入上面的vueUpload.js自定义组件文件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>测试</title>
<script src="https://unpkg.com/vue@2/dist/vue.js"></script>
<!-- 引入样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<!-- 引入组件库 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<!-- 引入自定义上传组件 -->
<script src="./vueUpload.js"></script>
</head>
<body>
<div id="app">
<vue-upload v-model="fileList" :limit="1" :file-type="['doc','docx','pdf']" :file-size="50"></vue-upload>
</div>
<script>
var app = new Vue({
el: '#app',
data () {
return {
fileList:[{fileName:'测试.pdf',fileUrl:'http://www.baidu.com/img/bd_logo1.png'}],
}
},
mounted () {
},
methods: {
}
})
</script>
</body>
</html>3、展示效果
总结：在html中使用vue创建自定义组件和在vue中创建自定义组件基本一样，只不过写在js里最后记得把自定义组件通过Vue.component('vue-upload',demoComponent)，挂载到vue上，还有在html中标签还有属性名都不可以用驼峰命名，切记！！！！！，驼峰命名的单词改用 ‘-’ 的写法
