在Javascript中使用POST上传zip文件会无声地失败 [英] Uploading a zip file using POST in Javascript fails silently

问题描述

我正在开发一个Web应用程序（使用JQuery 2.2.4版），允许用户将图像和数据提交给我们的服务器。当用户决定上传他们的提交时，我的代码应使用JSZip库生成一个zip文件，并使用POST将其上传到我们的服务器。在StackExchange上搜索了一下之后，我想出了这个代码：

I am working on a web application (using JQuery version 2.2.4) that allows users to submit images and data to our server. When users decide to upload their submissions, my code should generate a zip file using the JSZip library and upload it to our server using POST. After some searching here on StackExchange, I came up with this code:

var zip = new JSZip();   // Create the object representing the zip file

// ...Add the data and images

console.log('Generating compressed archive...');
zip.generateAsync({
    compression: 'DEFLATE',
    type: 'blob'
}).then(function(zc) {// Function called when the generation is complete
    console.log('Compression complete!');
    // Create file object to upload
    var fileObj = new File([zc], fileName);
    console.log('File object created:', fileObj);
    $.post('http://myurl/submit', {
    data: fileObj,
    }).done(function() {
        console.log('Ajax post successful.');
    })
    .fail(function(jqXHR, textStatus, errorThrown) {
        console.log('Ajax post failed. Status:', textStatus);
        console.log(errorThrown);
    });
});

我的代码打印 File对象创建消息，文件对象本身看起来好的，但我什么也没得到。沉默的失败。 POST调用甚至没有出现在Firebug的Net面板中。

My code prints the File object created message, the file object itself looks OK, but then I get nothing else. A silent failure. The POST call does not even appear in the Net panel for Firebug.

经过更多搜索后，我还尝试事先添加此代码：

After more searching, I also tried to add this code beforehand:

$(document).ajaxError(function(event, jqxhr, settings, thrownError) {
    console.log('Ajax post failed. Event:', event);
    console.log('Ajax settings:', settings);
    console.log(thrownError);
});

但这不会被触发。显然我在设置错误回调时会出现一些错误 - 我可以尝试一下吗？

But that doesn't get triggered. There's clearly some error I am making in setting up the callbacks for errors - what could I try?

推荐答案

我设法得到了上传工作创建一个FormData对象并将我的文件粘贴到它。以下是代码：

I have managed to get the upload to work creating a FormData object and sticking my file into it. Here is the code:

var zip = new JSZip();   // Create the object representing the zip file

// ...Add the data and images

console.log('Generating compressed archive...');
zip.generateAsync({
    compression: 'DEFLATE',
    type: 'blob'
}).then(function(zc) {// Function called when the generation is complete
    console.log('Compression complete!');
    // Create file object to upload
    var fileObj = new File([zc], fileName);
    console.log('File object created:', fileObj);
    var fd = new FormData();
    fd.append('fileName', fileName);
    fd.append('file', fileObj);
    fd.append('mimeType', 'application/zip');
    // POST Ajax call
    $.ajax({
        type: 'POST',
        url: 'http://myurl/submit',
        data: fd,
        contentType: false,
        processData: false,
    }).done(function() {
        console.log('Ajax post successful.');
    }).fail(function(jqXHR, textStatus, errorThrown) {
        console.log('Ajax post failed. Status:', textStatus);
        console.log(jqXHR);
        console.log(errorThrown);
    });
});

这是受David Duponchel链接的其他StackExchange答案的启发。

This was inspired by the other StackExchange answers linked to by David Duponchel.

这篇关于在Javascript中使用POST上传zip文件会无声地失败的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！