JQuery将文件发送给Django

我有下一个问题。 当我通过表单发送POST请求时:

<form id="uploadForm" action="/theme/zip/type/" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <input id="fileInput" class="input-file" name="upload" type="file">
    <input type="submit" value="Upload" />
</form>

然后在服务器上我有代码:

print request.FILES

服务器打印:

<MultiValueDict: {u'upload': [<InMemoryUploadedFile: ID_12241.zip (application/zip)>]}>

当我在jQuery代码中逐步执行此操作时:

var content = zip.generate();
var options = {
    url: '/theme/zip/type/',
    data: {
       file: content
    }
};
$('#uploadForm').ajaxSubmit(options);

我在'request.POST'的'file'参数中有这个文件,但'request.FILES'是空的()。 我做错了什么?


看一下JQUery表单插件,它能够使用ajax上传文件。

根据其网站上的文档

Browsers that support the XMLHttpRequest Level 2 will be able to upload files seamlessly and even get progress updates as the upload proceeds. For older browsers, a fallback technology is used which involves iframes since it is not possible to upload files using the level 1 implmenentation of the XMLHttpRequest object.

我在我的项目中使用这个,你不必为旧浏览器定义任何iframe。 这个插件会自动为你做。 以下是实现ajax文件上传的示例代码 -

HTML文件看起来像(下载并链接html文件中的jquery.form.js): -

<form id="uploadForm" method="post" action="/theme/zip/type/"> {% csrf_token %}
    <input type="file" id="fileInput" name="upload"/>
    <button type="submit">Upload</button>
</form>

<script src="jquery-ui.min.js"></script>
<script src="jquery.form.js"></script>

在js文件中添加以下代码: -

var options = {
    beforeSubmit:showRequest,  // pre-submit callback
    success:showResponse,  // post-submit callback
    resetForm: false        // reset the form after successful submit
};

//uploadForm is the name of your form
$('#uploadForm').submit(function() {
    // inside event callbacks 'this' is the DOM element so we first
    // wrap it in a jQuery object and then invoke ajaxSubmit

    $(this).ajaxSubmit(options);

    // !!! Important !!!
    // always return false to prevent standard browser submit and 
    // page navigation return false;
});

// pre-submit callback 
function showRequest(formData, jqForm, options) { 
    // formData is an array; here we use $.param to convert it 
    // to a string to display it but the form plugin does 
    // this for you automatically when it submits the data 
    var queryString = $.param(formData); 

    // jqForm is a jQuery object encapsulating the form element. 
    // To access the DOM element for the form do this: 
    // var formElement = jqForm[0]; 

    alert('About to submit: nn' + queryString); 

    // here we could return false to prevent the form from being submitted; 
    // returning anything other than false will allow the 
    // form submit to continue 
    return true; 
} 

// post-submit callback 
function showResponse(responseText, statusText, xhr, $form)  { 
    // for normal html responses, the first argument to the success callback 
    // is the XMLHttpRequest object's responseText property 

    // if the ajaxSubmit method was passed an Options Object with the dataType 
    // property set to 'xml' then the first argument to the success callback 
    // is the XMLHttpRequest object's responseXML property 

    // if the ajaxSubmit method was passed an Options Object with the dataType 
    // property set to 'json' then the first argument to the success callback 
    // is the json data object returned by the server 

    alert('status: ' + statusText + 'nnresponseText: n' + responseText + 
        'nnoutput div should have been updated with the responseText.'); 
} 

一旦你点击提交按钮,将会调用.submit()函数。 该函数返回false,这对于防止浏览器回发很重要。 在此功能中定义了2个回调函数。

  • 当表单即将提交时, showRequest将被调用,在这里你可以看到所有的发布数据。
  • showResponse将在服务器返回响应时调用。
  • 在服务器上,您将在request.FILES中获取数据。 从服务器返回一个可以在showResponse函数中访问的JSON响应。


    传统意义上的Ajax是XMLHttpRequest,它不允许您编码并将本地文件发送到服务器。

    通过“ajax”进行上传的常见方式是使用Flash swf处理在同一页面上的上传,或者使用具有不可见1x1 iframe的目标的表单。

    尝试

    http://net.tutsplus.com/tutorials/javascript-ajax/uploading-files-with-ajax/

    或者尝试http://www.uploadify.com/

    链接地址: http://www.djcxy.com/p/56555.html

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