elementui uploader上传文件（多文件范例）

<template>
<div style="padding: 50px;">
<el-form class="form-wrapper padding" ref="editForm" :model="editForm" :rules="editRules" label-width="110px">
<el-form-item label="活动图片：" prop="photo">
<el-upload
:action="base"
multiple
accept="image/png, image/jpeg"
list-type="picture-card"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
:on-progress="uploadProgress"
:on-success="uploadSuccess"
:on-error="uploadError"
:file-list="editFiles"
:show-file-list="true">
<i class="el-icon-plus"></i>
</el-upload>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="editEnsure">保存</el-button>
</el-form-item>
</el-form>
<el-dialog class="preview-modal" :visible.sync="imgVisible" append-to-body>
<img width="100%" :src="dialogImageUrl" alt="photo">
</el-dialog>
</div>
</template>
<script type="text/ecmascript-6">
import base from 'api/env' // 配置了图片上传接口地址的js文件
export default {
data() {
return {
editForm: { // 编辑表单
photo: '' // 活动图片
},
editRules: { // 表单验证规则
photo: [{required: true, message: '请上传活动图片', trigger: 'blur'}]
},
editFiles: [],// 编辑时已上传图片初始化
uploadComplete: true,
base: base.imgURL + 'upload/img',
imgVisible: false, // 上传图片预览
dialogImageUrl: '' // 图片预览地址
}
},
created() {
this.initInfo();
},
methods: {
// 编辑
initInfo() {
this.editForm = {
id: 1,
photo: ''
};
// 这里photo应从服务器获取，存储的是数组，请按照相应格式获取图片url（这里直接给值）
let temp = [
{id: 123, photo: 'http://img4.imgtn.bdimg.com/it/u=2011641246,1136238184&fm=27&gp=0.jpg'},
{id: 124, photo: 'http://img2.imgtn.bdimg.com/it/u=302701032,2300144492&fm=27&gp=0.jpg'}
];
if(temp.length > 0){
for(let t=0; t<temp.length; t++){
//通过[{name: 'name', url: 'url地址'}]格式初始化照片墙
this.editFiles.push({name: 'name' + temp[t].id, url: temp[t].photo});
if(t===0){
this.editForm.photo += temp[t].photo
} else {
// 最终photo的格式是所有已上传的图片的url拼接的字符串（逗号隔开），根据实际需要修改格式
this.editForm.photo += ',' + temp[t].photo;
}
}
}
this.editVisible = true;
},
// 确认修改
editEnsure() {
if(!this.uploadComplete){
this.message.error("上传图片不能大于10M");
return false;
}
},
// 上传图片时调用
uploadProgress(event,file, fileList){
this.uploadComplete = false;
},
// 上传图片成功
uploadSuccess(res, file, fileList) {
this.uploadComplete = true;
this.fileChange(fileList);
},
// 上传图片出错
uploadError(err, file, fileList) {
this.$message.error("上传出错");
},
// 移除图片
handleRemove(file, fileList) {
this.fileChange(fileList);
},
// 设置photo值
fileChange(fileList) {
let temp_str = '';
if(fileList.length > 0){
for(let i=0; i<fileList.length; i++){
if(fileList[i].response){
if(fileList[i].response.code === 0){
if(i===0){
temp_str += fileList[i].response.data;
} else {
temp_str += ',' + fileList[i].response.data;
}
}
} else if(fileList[i].status && fileList[i].status === 'success'){
if(i===0){
temp_str += fileList[i].url;
} else {
temp_str += ',' + fileList[i].url;
}
}
}
}
this.editForm.photo = temp_str;
},
// 图片预览
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;
this.imgVisible = true;
}
}
}
</script>