我想制作两个 jQuery 文件上传处理程序 - 一个到服务器 1,另一个到服务器 2。像这样:
$('#fileupload').fileupload({
url: 'server1',
type: 'POST',
autoUpload: true,
formData: {
....
}
})
$('#fileupload').fileupload({
url: 'server2',
type: 'POST',
autoUpload: true,
disableImageResize: false,
imageMaxWidth: 200,
imageMaxHeight: 200
})
然而,当我这样做时,只有第二个处理程序被调用,因此只有第二个服务器接收文件。如何让两台服务器都收到文件?
更新:
有些人指出这些调用是异步的,这是真的 - 但回调方法也不起作用,这就是我需要帮助的原因:
$('#fileupload').fileupload({
url: 'server1',
type: 'POST',
autoUpload: true,
formData: {
....
}
}).on('fileuploadstop', function(){
$('#fileupload').fileupload({
url: 'server2',
type: 'POST',
autoUpload: true,
disableImageResize: false,
imageMaxWidth: 200,
imageMaxHeight: 200
})
});
编辑 2
我仍在努力 - 我越来越接近了,但我还没有完全明白。
我的目标是当用户添加文件时,它会上传到一个服务器,然后立即上传到具有不同设置的另一台服务器。
这是最近的一个实现 - 第一次有效,但第二次对两个服务器进行了多次调用。看起来即使我只初始化 fileupload() 一次(使用互斥量)并在第二次调用中小心取消我的生命周期回调,但下次有人上传文件时它仍然会双重触发。有什么想法吗?
<form id="form_file_upload" action="/upload" method="post" enctype="multipart/form-data">
<input type="file" id="fileupload" name="file" multiple>
<input type="submit" value="Upload">
</form>
$(function() {
$('#fileupload').on('change', function(){
var fileUploadAddFn = function (e, data) {
// lifecycle callback
// do stuff
};
var fileSetupFirstUpload = function (){
$('#fileupload').fileupload( // initialize first server
'option',
{
url: 'server1',
type: 'POST'
}
);
$('#fileupload').on('fileuploadaddfn', fileUploadAddFn); // set a lifecycle callback for 1st upload
};
var fileSetupSecondUpload = function() {
$('#fileupload').fileupload( // initialize first server
'option',
{
url: 'server2',
type: 'POST'
}
);
$('#fileupload').off('fileuploadaddfn');
$('#fileupload').off('fileuploadstop');
}
var filesToUpload = $('#fileupload')[0].files; // this works since fileupload is not yet initialized
if(typeof fileUploadInitialized == 'undefined'){
$('#fileupload').fileupload();
fileUploadInitialized = true; // global mutex to only initialize once
}
fileSetupFirstUpload();
$('#fileupload').on('fileuploadstop', function (e, data) {
fileSetupSecondUpload();
$('#fileupload').fileupload('add', {files: filesToUpload});
$('#fileupload').fileupload('send');
});
$('#fileupload').fileupload('add', {files: filesToUpload});
$('#fileupload').fileupload('send');
});
最佳答案
尝试
$('#fileupload').fileupload(); // init
$("#fileupload").on("change", function (e) {
e.preventDefault();
// `File` object reference
var file = e.target.files[0];
// settings
var settings = [{
"files": file,
"url": "/echo/json/" // `server1`
//, additional settings
}, {
"files": file,
"url": "/echo/json/" // `server2`
//, additional settings
}];
var request = function (_settings) {
var jqxhr = $('#fileupload').fileupload('send', _settings);
return jqxhr
};
$.when.apply($(e.target), // set `this`
$.map(settings, function (data) {
return request(data)
.success(function (result, textStatus, jqXHR) {
// do stuff ,
// return promise to `then`
return jqXHR
})
.error(function (jqXHR, textStatus, errorThrown) {
console.log(errorThrown);
return errorThrown // return `errorThrown` to `then`
})
.complete(function (result, textStatus, jqXHR) {
/* ... */
});
})
).then(function (upload1, upload2) {
console.log(upload1, upload2, this) // `this` : `$("#fileupload")`
}, function (err) {
console.log(err)
});
});
关于jquery - 文件上传两次到不同的服务器?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27697701/