时间:2020-12-31 14:13:31 | 栏目:jquery | 点击:次
前段时间介绍过jquery uploadify上传插件的使用方法,我在使用中遇到过Http Error 302错误问题,应该会有很多人在使用中遇到过,在此记录下来:
首先http 302是请求被重定向的意思,这就很容易理解了,如果你的uploadify处理上传脚本有session验证,就会出现此错误,因为flash在执行post请求的时候没有包含cookie信息,而服务器的session会根据客户端的cookie来得到SESSIONID。没有提交cookie自然就不能获取到session,然后uploadify就返回了302(请求被重定向)的错误。
解决办法当然是把session_id的值传到服务端:
<script> $(document).ready(function() { $('#file_upload').uploadify({ 'uploader' : 'uploadify/uploadify.swf', 'script' : 'uploadify.php', 'folder' : 'uploads/file', 'formData': { 'session': '<?php echo session_id();?>'}, 'onComplete' : function(event, ID, fileObj, response, data) { alert(response); } }); }); </script>
然后在服务器端session验证之前:
if (isset($_POST['session'])){ session_id($_POST['session']); session_start();//注意此函数要在session_id之后 }
当然,你也可以直接在url中将session id传过去。
yii中代码如下:
$('#<?php echo $upload_name_id;?>').uploadify({ 'buttonText': '选择文件..', 'fileObjName': 'imgFile', 'method': 'post', 'multi': false, 'queueID': 'fileQueue', /*'uploadLimit': 2,*/ 'fileTypeExts': '*.gif;*.png;*.jpg;*.bmp;*.jpeg;', 'buttonImage': '<?php echo $this->_static_public?>/js/uploadify/select.png', 'formData': { 'sessionId' : '<?php echo Yii::app()->session->sessionID; ?>', 'timestamp' : '<?php echo time();?>', 'token' : '<?php echo md5('unique_salt'.time()); ?>', 'modelName' : '<?php echo $modelName; ?>', 'modelId' : '<?php echo $model->id; ?>' }, 'swf': '<?php echo $this->_static_public;?>/js/uploadify/uploadify.swf', 'uploader': '<?php echo $this->createUrl('uploadify/basicExecute')?>', 'onUploadStart': function () { $('#<?php echo $up_upload_name_id;?> img').remove(); $('#<?php echo $up_upload_name_id;?> a').remove(); $imgHtml = '<img class="upload_load" src="static/images/upload.gif" align="absmiddle" />'; $('#<?php echo $up_upload_name_id;?>').append($imgHtml); }, 'onUploadSuccess': function(file, data, response) { $('.upload_load').remove(); var json = $.parseJSON(data); if (json.state == 'success') { $("#<?php echo $d_upload_name_id;?>").remove(); $(yt_upload_name_id).val(json.fileId); $imgHtml ='<div id="<?php echo $d_upload_name_id;?>">'; $imgHtml += '<a href="<?php echo $this->_baseUrl?>/' + json.file + '" target="_blank">'; $imgHtml += '<img src="<?php echo $this->_baseUrl?>/'+json.file+'" width="85" height="75" align="absmiddle"/>'; $imgHtml += '</a>'; $imgHtml += '<a href="javascript:uploadifyRemove("' + json.fileId + '","<?php echo $d_upload_name_id;?>","<?php echo $yt_upload_name_id;?>")">删除</a>'; $imgHtml +='</div>'; $('#<?php echo $up_upload_name_id;?>').append($imgHtml); } else { alert(json.message); } }, 'onQueueComplete':function () { $('.upload_load').remove(); } });
服务端:
if (isset($_POST['sessionId'])) { $session = Yii::app()->getSession(); $session->close(); $session->sessionID = $_POST['sessionId']; $session->open(); }
ps:jquery上传插件uploadify使用心得(总结)
自己使用实例:
1、jsp页面:
<link href="jsp/js/jquery_upload/uploadify.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="jsp/js/jquery-1.4.2.min.js"></script> <script type="text/javascript" src="jsp/js/jquery_upload/swfobject.js"></script> <script type="text/javascript" src="jsp/js/jquery_upload/jquery.uploadify.v2.1.4.min.js"></script> //jquery文件上传 $(document).ready(function() { $("#uploadify").uploadify({ 'uploader': 'jsp/js/jquery_upload/uploadify.swf', 'script': 'uploadFile.svl', 'cancelImg': 'jsp/js/jquery_upload/cancel.png', 'queueID': 'fileQueue', 'auto': false, 'multi': true, 'method':'POST', 'scriptData':{'saveFolder':'stuPhotos'},//GET方式才可生效 'fileExt' :'*.jpg;*.gif;*.png', //控制可上传文件的扩展名 'fileDesc': 'jpg、gif、png文件', //控制可上传文件的扩展名描述,两者需要同时使用 'buttonImg':'jsp/js/jquery_upload/selectBtn.gif', 'width':80,//"浏览"按钮宽度 'onComplete':function(event,ID,fileObj,response,data){ //alert(response) //response为服务器响应数据 }, }); }); <td width="200" class="tabIndex" style="height:10px">照片:</td> <td> <input type="file" name="uploadify" id="uploadify" /> <p> <a href="javascript:$('#uploadify').uploadifyUpload()">上传</a>| <a href="javascript:$('#uploadify').uploadifyClearQueue()">取消上传</a> </p> <div id="fileQueue" ></div> <input type="hidden" name="stuPhoto" id="stuPhoto" /> </td>
2、服务端代码
public class UploadFileUtil extends HttpServlet { private static final long serialVersionUID = 1L; File tmpDir = null;// 初始化上传文件的临时存放目录 File saveDir = null;// 初始化上传文件后的保存目录 public UploadFileUtil() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try{ if(ServletFileUpload.isMultipartContent(request)){ response.setCharacterEncoding("utf-8");//务必,防止返回文件名是乱码 DiskFileItemFactory dff = new DiskFileItemFactory();//创建该对象 dff.setRepository(tmpDir);//指定上传文件的临时目录 dff.setSizeThreshold(1024000);//指定在内存中缓存数据大小,单位为byte ServletFileUpload sfu = new ServletFileUpload(dff);//创建该对象 sfu.setFileSizeMax(5000000);//指定单个上传文件的最大尺寸 sfu.setSizeMax(10000000);//指定一次上传多个文件的总尺寸 FileItemIterator fii = sfu.getItemIterator(request);//解析request 请求,并返回FileItemIterator集合 while(fii.hasNext()){ FileItemStream fis = fii.next();//从集合中获得一个文件流 if(!fis.isFormField() && fis.getName().length()>0){//过滤掉表单中非文件域 String fileName = fis.getName();//获取文件名 String extName = ""; if (fileName.lastIndexOf(".") >= 0) { extName = fileName.substring(fileName.lastIndexOf(".")); } BufferedInputStream in = new BufferedInputStream(fis.openStream());//获得文件输入流 String uuidName = UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();//用UUID生成文件名 BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File(saveDir+"/"+uuidName+extName)));//获得文件输出流 Streams.copy(in, out, true);//开始把文件写到你指定的上传文件夹 } } //jquery上传方式返回 response.getWriter().print("upload success");//成功 } }catch(Exception e){ response.getWriter().print("upload fail");//失败 e.printStackTrace(); } } public void init() throws ServletException { super.init(); String serverPath = this.getServletConfig().getServletContext().getRealPath("/");//获取服务器路径 String tmpPath = serverPath+"/tmpUploadsFolder/"; String savePath = serverPath+"/uploadsFolder/"; tmpDir = new File(tmpPath); saveDir = new File(savePath); if(!tmpDir.isDirectory()) tmpDir.mkdir(); if(!saveDir.isDirectory()) saveDir.mkdir(); }}
以上内容是小编给大家介绍的jQuery Uploadify 上传插件出现Http Error 302 错误的解决办法,希望大家喜欢。