【发布时间】：2011-03-14 00:24:45
【问题描述】：
我想将带有HttpClient 的大型视频文件 (>=1Gb) 上传到 servlet，但我找不到任何实际示例。
能给我一些有用的代码示例吗？
我希望同时查看 HttpClient 和 FileUpload 演示代码（作为一个项目）。我可以使用 FileUpload lib 下载大文件吗？
像这样的小程序-> servlet 上传绑定很有趣
【问题讨论】：
标签： java
【发布时间】：2011-03-14 00:24:45
【问题描述】：
这里是一个HttpClient和文件上传的例子：
http://www.theserverside.com/news/1365153/HttpClient-and-FileUpload
我不确定您所说的“真实”。它足够真实，即使它与您的情况不完全匹配。
1GB？您可能会遇到文件大小限制问题。在本地试试看。如果它失败了，至少你会有一些真实的代码和更准确的条件可以在这里发布。
【讨论】：
-
感谢您的快速回复，我只找到了这个例子
-
清单 9-6。 HttpMultiPartFileUpload.java
-
这很有趣，但我没有看到任何关于块或缓冲区的提及？所以 HttpClient 没有 HttpUrlConnection max_chunk_size 限制？
-
我找不到任何 FileUpload 示例 :( 所以我想查看客户端和 servlet 示例代码...
我可以上传>200mb的大文件，请看下面的jsp到spring控制器代码。
Jsp code :
<script src="../lib/app/configurator.data.ajax.js" type="text/javascript"></script>
<script src="../lib/ui/jquery.fileupload.js"></script>
<html>
<script language="Javascript">
var varb = '';
var test = 0;
var count = 1;
$(function () {
var maxChunkSize = 30000000; //SET CHUNK SIZE HERE
var your_global_var_for_form_submit = '';
var params = {
year: threeDSelectedYear,
series: threeDSelectedSeries
};
/*File upload bind with form, 'fileupload' is my form id. As sumit triggers
for file ulaod will submit my form*/
/* replaceFileInput: true, */
$('#fileupload').fileupload({
maxChunkSize: maxChunkSize,
url: efccustom.getEfcContext()+'upload/uploadZip?year='+threeDSelectedYear+'&series='+threeDSelectedSeries, //URL WHERE FILE TO BE UPLOADED
error: function (jqXHR, textStatus, errorThrown) {
// Called for each failed chunk upload
$(".fileupload-loading").html("");
$('.ANALYZE_DIALOG').dialog("close");
},
success: function (data, textStatus, jqXHR) {
/*This event will be called on success of upload*/
count = parseInt($('#counter').val()) + 1;
$('#counter').val(count);
$('#ttk').val(count);
data.ttk = 7;
console.log(" count ",count , data);
},
submit: function (e, data) {
/*This event will be called on submit here i am
adding variable to form*/
//console.log($('#zip_uploaded_file').val());
//console.log(data.originalFiles[0].name);
test = data.originalFiles[0];
$('#fname').val(data.originalFiles[0].name);
$('#trequests').val(Math.ceil(data.originalFiles[0].size/maxChunkSize));
$('#counter').val('1');
},
progress: function (e, data) {
/*PROGRESS BAR CODE WILL BE HERE */
$(".fileupload-loading").html('<img src="../public/themeroller/images/throbber.gif" alt="Uploading Please Wait..." title="Uploading Please Wait...." />');
},
add: function (e, data) {
$('.browsedFileName').html(data.originalFiles[0].name);
your_global_var_for_form_submit = data;
},
done: function (e, data) {
ajaxcall.Data._get('upload/extractZipNCreateJson',params,function(data2) {
alert("file upload success ");
$(".fileupload-loading").html("");
$('.ANALYZE_DIALOG').dialog("close");
});
}
});
/*This is my button click event on which i am submitting my form*/
$('#button').click(function(){
your_global_var_for_form_submit.submit();
});
});
</script>
<html>
<body>
<form id="fileupload" enctype="multipart/form-data">
<div class="row fileupload-buttonbar">
<div class="span7">
<!--<input type="file" name="files" id="file" /> -->
<input type="file" id="zip_uploaded_file" name="zip_uploaded_file" />
<input type="hidden" name="counter" id="counter" value="1" />
<input type="hidden" name="fname" id="fname" value="" />
<input type="hidden" name="trequests" id="trequests" value="1" />
<input type="hidden" name="ttk" id="ttk" value="1" />
<input type="button" id="button" name="button" value="submit" />
<span class='browsedFileName'></span>
</div>
</div>
<!-- The loading indicator is shown during file processing -->
<div class="fileupload-loading"></div>
</form>
</body>
Controller COde :
@RequestMapping(value = "/uploadZip", method = RequestMethod.POST, consumes = "multipart/form-data")
@ResponseBody
public ResponseEntity<String>
uploadZip(HttpServletRequest request, HttpServletResponse response)
throws IOException, IllegalArgumentException {
try {
String year = request.getParameter("year");
String series = request.getParameter("series");
log.info(" year " + year + " series " + series);
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List items = upload.parseRequest(request);
Iterator iterator = items.iterator();
HttpSession session = request.getSession();
UserContext userContext = (UserContext) session
.getAttribute(ApplicationConstant.USER_CONTEXT);
String userName = userContext.getUser();
String workSpaceInUse = userContext.getCurrentWorkSpace();
FileItem item = null;
boolean fileNotExistFlag;
String fileExtension;
while (iterator.hasNext()) {
item = (FileItem) iterator.next();
String content = item.getContentType();
log.info(" content "+content);
log.info(" File Type Getting Uploaded :"+content);
if (!item.isFormField()) {
/* Here in IOUtils the Third Parameter true tells that the small chunks of data that comes need to be added to the same File */
IOUtils.copy(fileItem.getInputStream(), new FileOutputStream(new File(threeDPath+"/"+year+"/"+series+"/"+uploadZipFileName),true));
}
}
return null;
}
}
catch(Exception e) {
return handleError(new RuntimeException("Unexpected error while uploading ZIP", e));
}
return null;
}
【讨论】：