<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title class="title">[文件管理器]</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<style type="text/css">
.content {background: transparent;}
.btn {position: relative;top: 0;left: 0;bottom: 0;right: 0;}
.btn .file {position: fixed;z-index: 93;left: 0;right: 0;top: 0;bottom: 0;width: 100%;opacity: 0;}
</style>
</head>
<body>
<div id="content" class="content">
<div class="btn">
<input :multiple="multiple" @change="onChange" :accept="accept" ref="file" class="file" type="file" />
</div>
</div>
<script type="text/javascript" src="js/vue.min.js"></script>
<script type="text/javascript">
let _this;
var vm = new Vue({
el: '#content',
data: {
accept: '',
multiple: true,
},
mounted() {
console.log('加载webview');
_this = this;
this.files = new Map();
document.addEventListener('plusready', (e)=>{
let {debug,instantly,prohibited} = plus.webview.currentWebview();
this.debug = debug;
this.instantly = instantly;
this.prohibited = prohibited;
this.accept = prohibited.accept;
if (prohibited.multiple === 'false') {
prohibited.multiple = false;
}
this.multiple = prohibited.multiple;
location.href = 'callback?retype=updateOption';
}, false);
},
methods: {
toast(msg) {
plus.nativeUI.toast(msg);
},
clear(name) {
if (!name) {
this.files.clear();
return;
}
this.files.delete(name);
},
setData(option='{}') {
this.debug&&console.log('更新参数：'+option);
try{
_this.option = JSON.parse(option);
}catch(e){
console.error('参数设置错误')
}
},
async upload(name=''){
if (name && this.files.has(name)) {
await this.createUpload(this.files.get(name));
}
else {
for (let item of this.files.values()) {
if (item.type === 'waiting' || item.type === 'fail') {
await this.createUpload(item);
}
}
}
},
onChange(e) {
let fileDom = this.$refs.file;
for (let file of fileDom.files) {
if (this.files.size >= this.prohibited.count) {
this.toast(`只允许上传${this.prohibited.count}个文件`);
fileDom.value = '';
break;
}
this.addFile(file);
}
this.uploadAfter();
fileDom.value = '';
},
addFile(file) {
if (file) {
let name = file.name;
this.debug&&console.log('文件名称',name,'大小',file.size);
// 限制文件格式
let suffix = name.substring(name.lastIndexOf(".")+1).toLowerCase();
let formats = this.prohibited.formats.toLowerCase();
if (formats&&!formats.includes(suffix)) {
this.toast(`不支持上传${suffix.toUpperCase()}格式文件`);
return;
}
// 限制文件大小
if (file.size > 1024 * 1024 * Math.abs(this.prohibited.size)) {
this.toast(`附件大小请勿超过${this.prohibited.size}M`)
return;
}
// let itemBlob = new Blob([file]);
let path = URL.createObjectURL(file);
this.files.set(file.name,{file,path,name: file.name,size: file.size,progress: 0,type: 'waiting'});
}
},
/**
* @returns {Map} 已选择的文件Map集
*/
callChange() {
location.href = 'callback?retype=change&files=' + escape(JSON.stringify([...this.files]));
},
/**
* @returns {object} 正在处理的当前对象
*/
changeFilesItem(item,end='') {
this.files.set(item.name,item);
location.href = 'callback?retype=progress&end='+ end +'&item=' + escape(JSON.stringify(item));
},
uploadAfter() {
this.callChange();
setTimeout(()=>{
this.instantly&&this.upload();
},1000)
},
createUpload(item) {
this.debug&&console.log('准备上传,option=：'+JSON.stringify(this.option));
item.type = 'loading';
delete item.responseText;
return new Promise((resolve,reject)=>{
let {url,name,method='POST',header={},formData={}} = this.option;
let form = new FormData();
for (let keys in formData) {
form.append(keys, formData[keys])
}
form.append(name, item.file);
let xmlRequest = new XMLHttpRequest();
xmlRequest.open(method, url, true);
for (let keys in header) {
xmlRequest.setRequestHeader(keys, header[keys])
}
xmlRequest.upload.addEventListener(
'progress',
event => {
if (event.lengthComputable) {
let progress = Math.ceil((event.loaded * 100) / event.total)
if (progress <= 100) {
item.progress = progress;
this.changeFilesItem(item);
}
}
},
false
);
xmlRequest.ontimeout = () => {
console.error('请求超时')
item.type = 'fail';
this.changeFilesItem(item,true);
return resolve(false);
}
xmlRequest.onreadystatechange = ev => {
if (xmlRequest.readyState == 4) {
this.debug && console.log('接口是否支持跨域',xmlRequest.withCredentials);
if (xmlRequest.status == 200) {
this.debug && console.log('上传完成：' + xmlRequest.responseText)
item['responseText'] = xmlRequest.responseText;
item.type = 'success';
this.changeFilesItem(item,true);
return resolve(true);
} else if (xmlRequest.status == 0) {
console.error('status = 0 :请检查请求头Content-Type与服务端是否匹配，服务端已正确开启跨域，并且nginx未拦截阻止请求')
}
console.error('--ERROR--：status = ' + xmlRequest.status)
item.type = 'fail';
this.changeFilesItem(item,true);
return resolve(false);
}
}
xmlRequest.send(form)
});
}
}
});
</script>
</body>
</html>