vue+element_ui上傳文件,并傳遞額外參數(shù)操作
需求：
1、文件大小驗(yàn)證
2、文件類型驗(yàn)證
3、額外參數(shù)傳輸
<template> <el-upload action :limit='1' :file-list='formFileList' :http-request='handleUploadForm' :on-exceed='formHandleExceed' :on-remove='formHandleRemove' :before-upload='beforeUploadForm' accept='.csv,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/vnd.ms-excel'> <el-button type='primary'>上傳文件</el-button> <span slot='tip' style='margin: 0 10px;'>只能上傳xlsx/xls/csv文件，且不超過{{formMaxSize}}M</span> </el-upload></template><script>export default { data () { return { formMaxSize: 10, // 上傳文件大小 formFileList: [], // 顯示上傳文件 uploadFormFileList: [] // 確定上傳文件 } }, methods: { // 開始上傳前驗(yàn)證 beforeUploadForm (file) { // 驗(yàn)證文件大小 if (file.size / 1024 / 1024 > this.formMaxSize) { this.$message({ message: `上傳文件大小不能超過${this.formMaxSize}M!`, type: ’warning’ }) return false } // 中文亂碼處理 if (file.raw) { let reader = new FileReader() // 讀取文件內(nèi)容 reader.readAsText(file.raw, ’gb2312’) // 防止中文亂碼問題，不加reader.onload方法都不會(huì)觸發(fā) reader.onload = function (e) { this.contentHtml = e.target.result // txt文本內(nèi)容，接下來就可以對其進(jìn)行校驗(yàn)處理了 } } // 驗(yàn)證文件類型 var testmsg = file.name.substring(file.name.lastIndexOf(’.’) + 1) const extension = testmsg === ’xlsx’ || testmsg === ’xls’ || testmsg === ’csv’ if (!extension) { this.$message({ message: ’上傳文件只能是xlsx/xls/csv格式!’, type: ’warning’ }) } return extension }, // 移除上傳列表中文件 formHandleRemove (file, formFileList) { let thiz = this for (let i = 0; i < thiz.uploadFormFileList.length; i++) { if (thiz.uploadFormFileList[i].pname === file.name) { thiz.uploadFormFileList.splice(i, 1) break } } }, // 允許上傳文件個(gè)數(shù)驗(yàn)證 formHandleExceed (files, formFileList) { this.$message.warning(`當(dāng)前限制選擇 1 個(gè)文件，本次選擇了 ${files.length} 個(gè)文件，共選擇了 ${files.length + formFileList.length} 個(gè)文件`) }, // 上傳文件 handleUploadForm (param) { let thiz = this let formData = new FormData() formData.append(’uid’, ’上傳文件編號’) // 額外參數(shù) formData.append(’files’, param.file) let loading = thiz.$loading({ lock: true, text: ’上傳中，請稍候...’, spinner: ’el-icon-loading’, background: ’rgba(0, 0, 0, 0.7)’ }) thiz.$axios.post(’http://localhost:8080/upload/file’, formData).then(({data}) => { if (data.statusCode === 233) { thiz.$message(’上傳文件成功，’ + data.message) thiz.formFileList = [] thiz.uploadFormFileList = [] } else { thiz.formFileList = [] thiz.uploadFormFileList = [] thiz.$message(’上傳文件失敗，’ + data.message) } loading.close() }) } }}</script><style lang='scss' scoped></style>
總結(jié)：
關(guān)于el-upload中各屬性的配置，可以看element_ui官網(wǎng)
后端接受上傳文件和額外參數(shù)：
@RequestParam(value = 'uid') String uid, @RequestParam(value = 'files') MultipartFile[] files
補(bǔ)充知識(shí)：vue利用elementUI上傳文件以及其他參數(shù)的處理方式
將文件自動(dòng)上傳改為false
:auto-upload='false'
點(diǎn)擊保存的時(shí)候，調(diào)用el-upload的上傳方法
代碼如下（封裝的上傳方法）
export function mpp(data) { return new Promise(function(resolve, reject) { let data = { method: 'POST', url:url, data:data } resolve(axios(data)); })}<template>
<!--導(dǎo)入計(jì)劃 --><div class='associationPlan'> <el-form :model='dataModel' :rules='rules' ref='associationPlan' label-width='100px'> <el-form-item label='項(xiàng)目名稱：' prop='projectArry'> <el-cascader :options='listOrgInfoList' v-model='dataModel.projectArry' :props='defaultProp' size='small' placeholder='請選擇項(xiàng)目' clearable :disabled='isCompany'></el-cascader> </el-form-item> <el-form-item label='計(jì)劃級別：' prop='level'> <el-select size='small' v-model='dataModel.level' placeholder='請選擇：' clearable style='width:100%;'><el-option v-for='(item,index) in planTypeList' :label='item.name' :value='item.number' :key='index'></el-option> </el-select> <span v-if='dataModel.level==1'>一級進(jìn)度計(jì)劃匹配項(xiàng)目總工期，項(xiàng)目下只可建立一個(gè)，請確認(rèn)后再添加！</span> </el-form-item> <el-form-item label='計(jì)劃名稱：' prop='name'> <el-input v-model.number='dataModel.name' size='small'></el-input> </el-form-item> <el-form-item label='導(dǎo)入計(jì)劃：'> <el-upload accept='.mpp' ref='uploadAdd' action='' :auto-upload='false' :http-request='uploadImg' :on-success='uploadImgSuccess' :on-remove='handleRemove'> <el-button size='small' type='success'>請選擇文件</el-button> </el-upload> </el-form-item> </el-form> <div class='clickBtn'> <el-button @click='close' size='small'>取消</el-button> <el-button @click='commit' size='small' type='primary'>保存</el-button> </div></div></template>
<script>import { mapState, mapActions } from ’vuex’;import { plan,mpp} from '../api/system_interface.js';export default { name: 'associationPlan', data() { return { dataModel: { projectId: ’’, projectArry:[], level:null, name:’’, parentId:’0’ }, defaultProp: { children: 'child', label: 'name', value: 'id' }, //數(shù)據(jù)校驗(yàn) rules: { projectArry: [{ required: true, message: '請選擇項(xiàng)目', trigger: 'blur' }], name: [{ required: true, message: '請輸入計(jì)劃名稱', trigger: 'blur' }], level: [{ required: true, message: '請選擇計(jì)劃級別', trigger: 'change' }] }, file:false, isCompany:false }; }, computed: { ...mapState([ ’listOrgInfoList’, ’planTypeList’ ]), }, methods: { ...mapActions([ ’getlistOrgInfoList’ ]), update(){ let companyTypes = sessionStorage.getItem('companyType'); this.isCompany = companyTypes == 4?true:false; this.dataModel.projectArry = JSON.parse(sessionStorage.getItem('selectArry')); }, uploadImg (f) { // if(!f){ // this.$message.error('請上傳文件!'); // return // } this.dataModel.projectId = this.dataModel.projectArry[this.dataModel.projectArry.length - 1]; let param = new FormData(); //創(chuàng)建form對象 param.append(’file’,f.file);//通過append向form對象添加數(shù)據(jù) param.append(’level’,this.dataModel.level);//添加form表單中其他數(shù)據(jù) param.append(’projectId’,this.dataModel.projectId);//添加form表單中其他數(shù)據(jù) param.append(’planName’,this.dataModel.name);//添加form表單中其他數(shù)據(jù) mpp(param)//上傳 .then(response=>{ if(response.code == '200'){ this.$message.success('上傳成功!'); this.close(); this.$emit('refreshData'); onSuccess(response.data); } }) .catch(({err}) => { f.onError() }) }, uploadImgSuccess(response, file, fileList) { // 緩存接口調(diào)用所需的文件路徑 console.log(’文件上傳成功’) // this.$message.success('上傳成功!'); }, handleRemove(file, fileList) { // 更新緩存文件 console.log(’文件刪除’) }, //重置方法 reset() { const associationPlan = this.$refs['associationPlan']; associationPlan.resetFields(); this.dataModel.projectId = null; this.dataModel.name = ’’; this.dataModel.level = ’’; this.dataModel.projectArry = []; }, //關(guān)閉彈框 close() { this.$emit('close'); this.reset(); }, //點(diǎn)擊提交 commit() { this.$refs['associationPlan'].validate(valid => { if (!valid) { return; } this.$refs.uploadAdd.submit(); // this.dataModel.projectId = this.dataModel.projectArry[this.dataModel.projectArry.length - 1]; // plan(this.dataModel) // .then(response => { // if (response.code == '200') { // this.$message.success('添加成功!'); // this.close(); // this.$emit('refreshData'); // } else { // this.$message.error(response.msg); // } // }) // .catch(error => { // }); }); }, }};
</script><style lang='scss' scoped>.clickBtn { text-align: center;}.warnInfo{ // color: #feba51; color: rgb(64, 158, 255);}</style>
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