SWFUpload的302错误

Question

，所以我使用swfuploader有装载swfuploader这段JavaScript代码到页面（​​）

swfuPubThumbnailUploader = new SWFUpload({ 
    upload_url : "/upload_thumbnail", 
    flash_url : "/Flash/swfupload.swf", 
    file_size_limit : 512 + " MB", 
    file_post_name: 'files[swf]', 
    file_types : '*.jpg;*.jpeg;*.gif;*.png', 
    file_types_description: "Image Files", 
    file_queue_limit : 1, 
    button_placeholder_id: 'swf-trans-file-selector', 
    button_text: '', 
    button_image_url: '', 
    button_width: "85", 
    button_height: "25", 
    button_cursor : SWFUpload.CURSOR.HAND, 
    button_window_mode : SWFUpload.WINDOW_MODE.TRANSPARENT, 

    post_params : { 
       "sid" : sid 
    }, 

    preserve_relative_urls : true, 
    file_queued_handler : fileQueued, 
    file_queue_error_handler : fileQueueError, 
    file_dialog_complete_handler : fileDialogComplete, 
    file_dialog_start_handler : sLibraryFileDialogStart, 
    upload_start_handler : sLibraryPubUploadStart, 
    upload_progress_handler : sLibraryPubUploadProgress, 
    upload_error_handler : sLibraryPubUploadError, 
    upload_success_handler : sLibraryPubUploadSuccess, 
    upload_complete_handler : sLibraryPubUploadComplete, 
    queue_complete_handler : queueComplete, // Queue plugin event 

    custom_settings: { 
    progressTarget : ("fsPPUploadProgress") 
    } 
}); 

但后来每当我上传（上传图片，更具体的...），swfuploader会抱怨302错误，这表明该网址正在重定向...但是当我访问上传网址'/ upload_thumbnail'时，没有重定向发生，上传网址加载正常...所以我检查了提琴手检查两个案件和这里是每个案件的请求

当我访问/ upload_thumbnail通过浏览器：

GET /upload_thumbnail HTTP/1.1 
Host: my.domain.com 
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0 
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 
Accept-Language: en-us,en;q=0.5 
Accept-Encoding: gzip, deflate 
Connection: keep-alive 
Cookie: __utma=171146939.260757561.1311084520.1336078159.1336400574.117; __utmz=171146939.1311084520.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utma=104299925.1228643063.1313075490.1335542105.1335567483.41; __utmz=104299925.1333981938.38.25.utmcsr=my.domain.com:8090|utmccn=(referral)|utmcmd=referral|utmcct=/browse/MD-2760; __qca=P0-29539114-1325619242917; SESS5ccc5f20cb72179af2f569e77eaa49da=6vde0rln7q3384k5lcvedsgfh3; SimpleSAMLAuthToken=_c2f653a6e9b18b10439d73849fb1142a7d43851998; __utmc=171146939; has_js=1 
If-Modified-Since: Mon, 07 May 2012 19:13:38 +0000 
If-None-Match: "1336418018" 

它加载罚款状态200

然后从swfuploader

POST /upload_thumbnail HTTP/1.1 
Accept: text/* 
Content-Type: multipart/form-data; boundary=----------gL6Ef1Ef1KM7Ij5gL6ae0gL6GI3GI3 
User-Agent: Shockwave Flash 
Host: my.domain.com 
Content-Length: 847357 
Connection: Keep-Alive 
Pragma: no-cache 
Cookie: __utma=171146939.1934231828.1323362429.1328283903.1333582993.5; __utmz=171146939.1323362429.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __utma=104299925.1653270920.1323362234.1334760245.1335992862.7; __utmz=104299925.1323362234.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); SESS5ccc5f20cb72179af2f569e77eaa49da=0qjn1gva2rhlcqiqp2g7liumd0; __qca=P0-1855943596-1327334275533 

它结束了与状态302和重定向到登录页面的一个....

所以我发现罪魁祸首是Cookie：请求....如果我将浏览器的COOKIE请求切换到swfuploader的Cookie请求，swfuploader请求将正确加载状态200 ...

我的第一个问题是.....为什么？ swfuploader的Cookie请求有什么问题？

其次，这可怎么翻译成我的javascript在最顶端的SWFUpload代码在浏览器中的实际swfuploader将拥有曲奇要求适当地固定....

Answer 1

默认PHP会话处理机制使用您的Cookie和您的用户代理将会话与用户进行匹配。由于Flash通过“ShockWave Flash”的用户代理向服务器标识了自己，这与浏览器的UA不同，因此php会为请求分配一个新会话。

如果您输出_POST数据，然后将这些值与您在session_start()之后获得的值进行比较，或者您将浏览器的UA更改为与Flash发送的完全匹配，则可以检查该数据。

解决方案？

将会话ID传递给服务器，无论您希望如何，默认值为_POST，并使用正确的ID初始化会话。

SWFUpload为您提供post_params即“defines the name/value pairs that will be posted with each uploaded file”。

// SWFUpload example - taken from you own config file 
post_params : { 
    "sid" : sid => THIS WOULD BE YOUR SESSION ID!; you can put <?=session_id()?> 
}, 

然后在服务器端...

// Prior to starting the session as you normally do you'll want to check if 
// you're trying to pass a session id by post, if so, initialize session with it 
<?php 
if(isset($_POST['sid'])) 
{ 
    session_id($_POST["sid"]); 
} 
session_start();