canUpload: true,//是否可以上传，初始值不可上传，所以disabled为true
filename: '',//上传文件的名称
loading: false,//点击上传的时候出现加载图标
fileList: [],//已上传的文件列表
isNumber: true,//判断数量是否为数字,
var file = document.getElementById("pic").files[0];
---------------------------------------------------------------------------------------------------------
//新的上传文件的js代码
submitUpload(){
if(!this.state.isNumber){
message.error("请输入正确的数字格式");
return
}
this.setState({ loading: true });
var here = this;
var file=document.getElementById('pic').files[0];
// var decodeStr = URLDecoder.decode(this.state.datasetName);
// decodeStr = this.state.datasetName;
$.ajax({
// url: this.uploadUrl+"?name=" + URLDecoder.decode(this.state.datasetName),
url: this.uploadUrl+"?name=" + this.state.datasetName,
// url: ajax.shangchuanshu(decodeStr),
type: "post",
data: file,
processData: false,
contentType: false,
success: function(res) {
if(res){
if(res.status == "OK"){
here.uploadSuccess();//上传成功之后的操作
//延迟3秒刷新列表
setTimeout(function(){
here.getTrainDataSetList();
message.success("上传成功！");
var fileList = here.state.fileList;
fileList.push(here.state.filename);
here.setState({loading: false,fileList:fileList});
},2000);
}else{
message.error(res.message);
here.setState({loading: false});
}
}
},
error:function(err){
notification['error']({
message: here.state.filename+'文件上传失败',
description: ''
});
here.setState({loading: false});
}
});
}
---------------------------------------------------------------------------------------------------------
//判断文件选择框的值
fileInput(e){
var file=document.getElementById('pic').files[0];
var dataSetName=file.name.split(".zip")[0];
var filename = file.name;
if(filename===''){
document.getElementById("fileTips").innerHTML="请选择要上传的文件";
}else{
document.getElementById("fileTips").innerHTML="";
var fileTypeArr = filename.split(".");
var fileType = fileTypeArr[fileTypeArr.length-1];
}
if(fileType!='zip'){
document.getElementById("fileTips").innerHTML="只能上传zip文件";
this.setState({canUpload: true,choiceFile:'请选择要上传的文件',datasetName:''});//当选择上传的文件不合法后，上传按钮的disabled为true
}else{
this.getDatasetsName(file.name);
if(!this.state.isNumber){
message.error("请输入正确的数字格式");
this.setState({
canUpload: true,
datasetName:'',
choiceFile:'请选择要上传的文件',
});//当选择上传的文件合法后，上传按钮的disabled为false
}else{
this.setState({
canUpload: false,
choiceFile:filename,
datasetName:dataSetName,
filename: filename
});
}
}
}
---------------------------------------------------------------------------------------------------------
dataSetNumBlur(){
var regTest = /.*[^1-9]+.*$/;//是否存在除了数字之外的其他字符，为true，则不是数字
var isnum = regTest.test(this.state.datasetNum);
if(isnum){
this.setState({isNumber: false});//上传按钮不可点击
document.getElementById("dataSetNum").innerHTML="请输入数字";
}else{
this.setState({isNumber: true});
document.getElementById("dataSetNum").innerHTML="";
}
}
---------------------------------------------------------------------------------------------------------
//新的上传文件的js代码
submitUpload() {
this.setState({
loading: true,
// listener: true
});
var storage = window.sessionStorage;
storage.setItem("listener", true)
storage.setItem("first", true)
// storage.setItem("timeout",6000)
if (!this.state.isNumber) {
message.error("请输入正确的数字格式");
return;
}
var here = this;
var file = document.getElementById("pic").files[0];
var reg = /[\u4e00-\u9fa5]/;
// var jqXHR;
if (reg.test(file.name.split(".zip")[0]) == false) {
here.setState({ progressBar: true })
//校验名称不能为汉字
here.state.jqXHR = $.ajax({
// url: this.uploadUrl+"?name=" + URLDecoder.decode(this.state.datasetName),
url: this.uploadUrl + "?name=" + this.state.datasetName,
type: "post",
data: file,
dataType: "json",
processData: false,
contentType: false,
xhrFields: {
withCredentials: true // 这里设置了withCredentials
},
// timeout : this.state.timeout,//设置超时时间
// timeout : 6000,
timeout: storage.getItem("timeout"),
//--------------------------------------------{/*2222222 */}
beforeSend: function () {
notification['info']({
message: '提示',
description: '现在开始上传文件！',
});
},
xhr: function () {
var storage = window.sessionStorage;
if (storage.getItem("first") == "true") {
if (here.state.myxhr.upload) { //上传数据时要判断是否有upload
var storage = window.sessionStorage;
// setTimeout (function(){
if (storage.getItem("listener") == "true") {
// wi
var heres = here;
here.state.myxhr.upload.addEventListener('progress', heres.uploadssa.bind(heres), false);
here.state.myxhr.upload.addEventListener('load', function (e) {
}, false);
} else {
here.state.myxhr.upload.removeEventListener("progress", uploads, false)
}
// },2000);
} else {
}
} else {
}
return here.state.myxhr;
},
//--------------------------------------------
success: function (res) {
if (res) {
if (res.status == "OK") {
here.uploadSuccess(); //上传成功之后的操作
//延迟3秒刷新列表
setTimeout(function () {
message.success("上传成功！");
var fileList = here.state.fileList;
fileList.push(here.state.filename);
here.setState({
loading: false,
fileList: fileList,
// loading: true
visible: false,
uploadBtnssa: false
});
here.getTrainDataSetList();
here.render();
}, 2000);
} else {
message.error(res.message);
here.setState({
loading: false,
visible: false
});
here.getTrainDataSetList();
here.render();
}
}
},
error: function (err) {
notification["error"]({
message: here.state.filename + "文件上传失败",
description: ""
});
here.setState({ loading: false });
// here.getTrainDataSetList();
here.render();
}
});
} else {
message.error("压缩包文件名中不能有汉字");
here.setState({ loading: false });
return;
}
}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
//判断文件选择框的值
fileInput(e) { //第二次点击 没走这个事件
var file = document.getElementById("pic").files[0];
var dataSetName = file.name.split(".zip")[0];
var filename = file.name;
if (filename === "") {
document.getElementById("fileTips").innerHTML =
"请选择要上传的文件";
} else {
document.getElementById("fileTips").innerHTML = "";
var fileTypeArr = filename.split(".");
var fileType = fileTypeArr[fileTypeArr.length - 1];
}
if (fileType != "zip") {
document.getElementById("fileTips").innerHTML = "只能上传zip文件";
this.setState({
canUpload: true,
choiceFile: "请选择要上传的文件",
datasetName: ""
}); //当选择上传的文件不合法后，上传按钮的disabled为true
} else {
this.getDatasetsName(file.name);
if (!this.state.isNumber) {
message.error("请输入正确的数字格式");
this.setState({
canUpload: true,
datasetName: "",
choiceFile: "请选择要上传的文件"
}); //当选择上传的文件合法后，上传按钮的disabled为false
} else {
this.setState({
canUpload: false,
choiceFile: filename,
datasetName: dataSetName,
filename: filename
});
}
}
}
用的antd progres进度条组件
<Progress percent={this.state.percent} status = {this.state.percent< 100 ? "active": this.state.percent == 100 ? "success": "error"} showInfo={this.state.percent == 100 ? false : true} style ={{display: this.state.progressBar == true? "block": "none"}}/>
---------------------------------------------------------------------------------
用的标签
<input type="file" name="file" id="pic" onChange={this.fileInput.bind(this)} ref="referenceUpload"/>
---------------------------------------------------------------------------------
获取上传的文件用
document.getElementById("pic").files[0];
---------------------------------------------------------------------------------
遇到的两个问题
第1个问题
上传的时候 第2次点击同一个文件 不显示到页面上 input标签的onchange事件不执行
解决
$("#pic").replaceWith('<input type="file" name="file" className = "uploadssa" id="pic"/>');
$("#pic").on("change", function () {
_this.fileInput(_this)
})
replaceWith JQuery替换标签方法 替换掉页面原有的input标签 新标签可以跟旧input标签一样 事件得通过on事件添加才起效果
附fileInput事件代码
fileInput(e) { //第二次点击 没走这个事件
var file = document.getElementById("pic").files[0];
var dataSetName = file.name.split(".zip")[0];
var filename = file.name;
if (filename === "") {
document.getElementById("fileTips").innerHTML =
"请选择要上传的文件";
} else {
document.getElementById("fileTips").innerHTML = "";
var fileTypeArr = filename.split(".");
var fileType = fileTypeArr[fileTypeArr.length - 1];
}
if (fileType != "zip") {
document.getElementById("fileTips").innerHTML = "只能上传zip文件";
this.setState({
canUpload: true,
choiceFile: "请选择要上传的文件",
datasetName: ""
}); //当选择上传的文件不合法后，上传按钮的disabled为true
} else {
this.getDatasetsName(file.name);
if (!this.state.isNumber) {
message.error("请输入正确的数字格式");
this.setState({
canUpload: true,
datasetName: "",
choiceFile: "请选择要上传的文件"
}); //当选择上传的文件合法后，上传按钮的disabled为false
} else {
this.setState({
canUpload: false,
choiceFile: filename,
datasetName: dataSetName,
filename: filename
});
}
}
}
---------------------------------------------------------------------------------
第2个问题
xhr对象 删除事件监听 不能使用
因为上传用的是xhr对象 这个对象有好几个自己的上传函数 有监听进度多少的(progress事件监听) 有监听完成的(load事件监听) 有监听超时的 这个xhr对象在jquery ajax里写的 直接停止ajax 就可以停止上传了 给jquery ajax赋值给一个全局变量 这样在其他方法里也能用这个ajax了
终止jquery ajax请求 用abort方法
state: {
myxhr: $.ajaxSettings.xhr()
}
here.state.myxhr.upload.addEventListener('progress', heres.uploadssa.bind(heres), false);
here.state.myxhr.upload.addEventListener('load', function (e) {}, false);
uploadssa(e) {
if (e.lengthComputable) {
let percent = Math.floor((e.loaded / e.total) * 100);
let upload = this.state.upload;
upload.progress.loaded = e.loaded;
upload.progress.total = e.total;
upload.progress.percentage = percent;
this.state.upload = upload;
this.setState({
upload: upload,
percent: percent
});
}
}
终止ajax请求 就可以终止xhr对象的事件监听了
if (this.state.percent != null) {
this.state.jqXHR.abort();
}
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