我正在尝试将1kb的单个文本文件上传到服务器。无论出于何种原因，我收到的数据都不包含文件信息。所以FileItem.Write（文件）不起作用。由于FileItem表示大小为0。
我认为这不是连接问题，因为我设法收到了URLVariables。唯一没有得到的是实际文件。
我遵循了adobe flex指南，但它仍然无效。 （http://livedocs.adobe.com/flex/3/html/help.html?content=17_Networking_and_communications_7.html）
不会抛出错误并触发事件完成。
有什么建议吗？
flex 3.2 sdk Jboss服务器 java doPost
编辑：添加了源代码
CertificateUploadServlet.java
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.ListIterator;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class CertificateUploadServlet extends HttpServlet {
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
{
File disk = null;
FileItem item = null;
DiskFileItemFactory factory = new DiskFileItemFactory();
ListIterator iterator = null;
List items = null;
Servlet FileUpload upload = new ServletFileUpload(factory);
try
{
items = upload.parseRequest(request);
}catch (FileUploadException e1)
{
// Oh Noes!
}
iterator = items.listIterator();
while(iterator.hasNext())
{
item = (FileItem) iterator.next();
if(item.isFormField())
{
}else
{
try
{
PrintWriter out1 = new PrintWriter(new BufferedWriter(new FileWriter("C:/Test/processUploadedFile2.txt",true)));
out1.println("item.getContentType():\t\t "+item.getContentType());
out1.println("item.getName:\t\t "+ item.getName());
out1.println("item.getSize:\t\t" + item.getSize());
out1.println("item.getString:\t\t" + item.getString());
out1.println("item.getFieldName:\t\t"+item.getFieldName());
out1.println("item.isInMemory:\t\t" + item.isInMemory());
out1.println("item.toString():\t\t" + item.toString());
out1.close();
}
catch(IOException e)
{
// oh Noes~
}
}
}
}
}
dataTest.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="horizontal"
creationComplete="init()">
<mx:Script>
<![CDATA[
import flash.netFileReference;
import mx.controls.Alert;
private var fileRef:FileReference = new FileReference();
private function init():void
{
fileRef.addEventListener(Event.SELECT, selectHandler);
fileRef.addEventListener(Event.COMPLETE, completeHandler);
}
private function selectHandler(event:Event):void
{
Alert.show("Selected...");
var request:URLRequest= new URLRequest("https://localhost/scm/uploadServlet");
fileRef.upload(request);
}
private function completeHandler(event:Event):void
{
Alert.show("File got uploaded");
}
]]>
</mx:Script>
<mx:Button id="mBrowseButton" label="browse..." click="fileRef.browse()" />
</mx:Application>
item.getName：返回我要上传的正确文件名
但是item.getSize总是返回0，因此当我尝试在服务器上写入文件时，它总是为空。
更多信息：
我能够将变量添加到URLVariables类并在java类中检索它。唯一的问题是文件没有被转移。
输出：
Single file upload test
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000000.tmp, size=10bytes, isFormField=true, FieldName=Filename
item name: Filename value: Cookie.txt
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000001.tmp, size=0bytes, isFormField=false, FieldName=Filedata
item.getName() : Cookie.txt
item.getContentType(): application/octet-stream
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isInMemory: true
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000001.tmp, size=0bytes, isFormField=false, FieldName=Filedata
item name: Upload value: Submit Query
Multifile upload test
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000003.tmp, size=10bytes, isFormField=true, FieldName=Filename
item name: Filename value: Cookie.txt
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000004.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000006.tmp, size=10bytes, isFormField=true, FieldName=Filename
item name: Filename value: doPost.txt
item.toString(): name=doPost.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000007.tmp, size=0bytes, isFormField=false, FieldName=Filedata
Single file upload test
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000010.tmp, size=0bytes, isFormField=false, FieldName=Filedata
item name: Filename value: Cookie.txt
item.getName() : Cookie.txt
item.getContentType(): application/octet-stream
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isInMemory: true
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\work\jboss.web\localhost\scm\upload_76556a96_14064a51ded__7ffa_00000010.tmp, size=0bytes, isFormField=false, FieldName=Filedata
item name: Upload value: Submit Query
编辑：更多信息。以下输出来自用户c.s代码。我无法弄清楚为什么它仍然不会让我按照记录的方式显示信息。
accept:text/*
content-type:multipart/form-data; boundary=----------ae0ae0ae0GI3ae0GI3ae0Ij5gL6cH2
user-agent:Shockwave Flash
host:localhost
content-length:1019
connection:Keep-Alive
cache-control:no-cache
cookie:JSESSIONID=BE2BF803041A7324CAF21445F6F3389C
------------ae0ae0ae0GI3ae0GI3ae0Ij5gL6cH2
Content-Disposition: form-data; name="Filename"
Cookie.txt
------------ae0ae0ae0GI3ae0GI3ae0Ij5gL6cH2
Content-Disposition: form-data; name="Filedata"; filename="Cookie.txt"
Content-Type: application/octet-stream
en.wikipedia.org FALSE / FALSE 0 BCSI-CS-1b3dbb382aea0366 2
en.wikipedia.org FALSE / FALSE 1404323604 centralnotice_bannercount_fr12 1
en.wikipedia.org FALSE / FALSE 1374590485 centralnotice_bucket 0-4.2
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%4011-tracking 11%3Aignore
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%405-links 5%3AX
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%406-form 6%3A6
en.wikipedia.org FALSE / FALSE 0 uls-previous-languages %5B%22en%22%5D
------------ae0ae0ae0GI3ae0GI3ae0Ij5gL6cH2
Content-Disposition: form-data; name="Upload"
Submit Query
------------ae0ae0ae0GI3ae0GI3ae0Ij5gL6cH2--
// dumpRequest = false output
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 10
item.getString: Cookie.txt
item.getFieldName: Filename
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__272408b1_140738428eb__7ffa_00000006.tmp, size=10bytes, isFormField=true, FieldName=Filename
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): application/octet-stream
item.getName: Cookie.txt
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isFormField: false
item.isInMemory: true
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__272408b1_140738428eb__7ffa_00000007.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 12
item.getString: Submit Query
item.getFieldName: Upload
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__272408b1_140738428eb__7ffa_00000008.tmp, size=12bytes, isFormField=true, FieldName=Upload
更多信息：
版本信息
Apache Maven: 2.2.1
Java version: 1.6.0_39
fileupload: 1.2
Commons-IO: 1.4
Internet Explorer: 8.0.7601.17514
Flash Player: 11.8.800.94
更多输出信息。第一次尝试使用cookie.txt，第二次尝试使用test.txt
#########################True/True
------------GI3gL6Ef1GI3cH2KM7ei4cH2gL6ei4
Content-Disposition: form-data; name="Filename"
Cookie.txt
------------GI3gL6Ef1GI3cH2KM7ei4cH2gL6ei4
Content-Disposition: form-data; name="Filedata"; filename="Cookie.txt"
Content-Type: application/octet-stream
en.wikipedia.org FALSE / FALSE 0 BCSI-CS-1b3dbb382aea0366 2
en.wikipedia.org FALSE / FALSE 1404323604 centralnotice_bannercount_fr12 1
en.wikipedia.org FALSE / FALSE 1374590485 centralnotice_bucket 0-4.2
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%4011-tracking 11%3Aignore
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%405-links 5%3AX
en.wikipedia.org FALSE / FALSE 1373131359 mediaWiki.user.bucket%3Aext.articleFeedbackv5%406-form 6%3A6
en.wikipedia.org FALSE / FALSE 0 uls-previous-languages %5B%22en%22%5D
------------GI3gL6Ef1GI3cH2KM7ei4cH2gL6ei4
Content-Disposition: form-data; name="Upload"
Submit Query
------------GI3gL6Ef1GI3cH2KM7ei4cH2gL6ei4--
#########################True/True
------------gL6GI3Ij5Ef1ei4Ef1ae0ei4Ef1gL6
Content-Disposition: form-data; name="Filename"
Test.txt
------------gL6GI3Ij5Ef1ei4Ef1ae0ei4Ef1gL6
Content-Disposition: form-data; name="Filedata"; filename="Test.txt"
Content-Type: application/octet-stream
This is text found instead Test.txt
------------gL6GI3Ij5Ef1ei4Ef1ae0ei4Ef1gL6
Content-Disposition: form-data; name="Upload"
Submit Query
------------gL6GI3Ij5Ef1ei4Ef1ae0ei4Ef1gL6--
#########################False/True
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 10
item.getString: Cookie.txt
item.getFieldName: Filename
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__32478800_14078614409__7ffa_00000000.tmp, size=10bytes, isFormField=true, FieldName=Filename
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): application/octet-stream
item.getName: Cookie.txt
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isFormField: false
item.isInMemory: true
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__32478800_14078614409__7ffa_00000001.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 12
item.getString: Submit Query
item.getFieldName: Upload
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload__32478800_14078614409__7ffa_00000002.tmp, size=12bytes, isFormField=true, FieldName=Upload
#########################False/True
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 8
item.getString: Test.txt
item.getFieldName: Filename
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_6fd3dea8_140789cbb78__7ffa_00000003.tmp, size=8bytes, isFormField=true, FieldName=Filename
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): application/octet-stream
item.getName: Test.txt
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isFormField: false
item.isInMemory: true
item.toString(): name=Test.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_6fd3dea8_140789cbb78__7ffa_00000004.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 12
item.getString: Submit Query
item.getFieldName: Upload
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_6fd3dea8_140789cbb78__7ffa_00000005.tmp, size=12bytes, isFormField=true, FieldName=Upload
#########################True/False
[accept:text/*
content-type:multipart/form-data; boundary=----------Ij5KM7ae0Ef1GI3ei4ei4gL6GI3ei4
user-agent:Shockwave Flash
host:localhost
content-length:1019
connection:Keep-Alive
cache-control:no-cache
cookie:JSESSIONID=C8FF29BF4253B2E9B9EEF3360F83EB74
]
#########################True/False
[accept:text/*
content-type:multipart/form-data; boundary=----------GI3cH2ei4KM7ei4GI3GI3KM7gL6ae0
user-agent:Shockwave Flash
host:localhost
content-length:449
connection:Keep-Alive
cache-control:no-cache
cookie:JSESSIONID=B4D506EF25DA8FD0D5B11DBA98B2B21D
]
#########################False/False
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 10
item.getString: Cookie.txt
item.getFieldName: Filename
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_50024124_140787caa99__7ffa_00000000.tmp, size=10bytes, isFormField=true, FieldName=Filename
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): application/octet-stream
item.getName: Cookie.txt
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isFormField: false
item.isInMemory: true
item.toString(): name=Cookie.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_50024124_140787caa99__7ffa_00000001.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 12
item.getString: Submit Query
item.getFieldName: Upload
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_50024124_140787caa99__7ffa_00000002.tmp, size=12bytes, isFormField=true, FieldName=Upload
#########################False/False
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 8
item.getString: Test.txt
item.getFieldName: Filename
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_c1b3312_14078bd7c03__7ffa_00000000.tmp, size=8bytes, isFormField=true, FieldName=Filename
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): application/octet-stream
item.getName: Test.txt
item.getSize: 0
item.getString:
item.getFieldName: Filedata
item.isFormField: false
item.isInMemory: true
item.toString(): name=Test.txt, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_c1b3312_14078bd7c03__7ffa_00000001.tmp, size=0bytes, isFormField=false, FieldName=Filedata
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
item.getContentType(): null
item.getName: null
item.getSize: 12
item.getString: Submit Query
item.getFieldName: Upload
item.isFormField: true
item.isInMemory: true
item.toString(): name=null, StoreLocation=C:\test\jboss-eap-5.1\jboss-as\server\test\tmp\upload_c1b3312_14078bd7c03__7ffa_00000002.tmp, size=12bytes, isFormField=true, FieldName=Upload
答案 0 :(得分：1)
首先，请检查您上传的文件是否是您认为的文件，并且没有空白内容。
其次，请使用下面的servlet代码并运行http和https协议的示例。您可以将变量dumpRequest更改为false，以打印与您所拥有的FileItem类似的public class UploadServlet extends HttpServlet {
private boolean dumpRequest = true;
private boolean saveToFile = true;
private String fileName = "requestBody.txt";
@Override
public void init() {
log("Upload servlet initialized");
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) {
try {
log("Servicing new request...");
if (dumpRequest) {
dumpRequestBody(request, response);
} else {
Writer writer = new OutputStreamWriter( response.getOutputStream() );
FileItem item = null;
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<?>items = upload.parseRequest(request);
ListIterator<?> iterator = items.listIterator();
while (iterator.hasNext()) {
item = (FileItem) iterator.next();
writer.write("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
writer.write("item.getContentType():\t " + item.getContentType() + "\n");
writer.write("item.getName:\t" + item.getName() + "\n");
writer.write("item.getSize:\t" + item.getSize() + "\n");
writer.write("item.getString:\t" + item.getString() + "\n");
writer.write("item.getFieldName:\t" + item.getFieldName() + "\n");
writer.write("item.isFormField:\t" + item.isFormField() + "\n");
writer.write("item.isInMemory:\t" + item.isInMemory() + "\n");
writer.write("item.toString():\t" + item.toString() + "\n");
writer.flush();
}
writer.close();
}
} catch(Exception e) {
throw new RuntimeException(e);
}
}
private void dumpRequestBody(HttpServletRequest request, HttpServletResponse response) throws IOException {
OutputStream responseOut = response.getOutputStream();
InputStream in = request.getInputStream();
if (!saveToFile) {
dumpHeaders(request, responseOut);
dumpStream(in, responseOut);
} else {
File file = new File(fileName);
FileOutputStream out = new FileOutputStream(file);
dumpStream(in, out);
out.close();
Writer writer = new OutputStreamWriter(responseOut);
writer.write("Response body was saved to file: " + file.getAbsolutePath());
writer.close();
}
in.close();
responseOut.flush();
responseOut.close();
}
private void dumpHeaders(HttpServletRequest request, OutputStream out) throws IOException {
Writer writer = new OutputStreamWriter(out);
writer.write("[");
// first dump headers
Enumeration<String> allHeaders = request.getHeaderNames();
while (allHeaders.hasMoreElements()) {
String header = allHeaders.nextElement();
String value = request.getHeader(header);
writer.write(header + ":" + value + "\n");
}
writer.write("]");
writer.flush();
}
private void dumpStream(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[2 * 1024];
int bytesRead = 0;
while ((bytesRead = in.read(buffer)) != -1) {
out.write(buffer, 0, bytesRead);
}
out.flush();
}
}
信息。
http运行test.txt时上面的servlet和一个名为Test data的文件，其中包含一个简单的文本[host:localhost:8080
user-agent:Mozilla/5.0 (Windows NT 6.0; rv:22.0) Gecko/20100101 Firefox/22.0
accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
accept-language:el-gr,el;q=0.8,en-us;q=0.5,en;q=0.3
accept-encoding:gzip, deflate
referer:http://localhost:8080/upload/upload.html
connection:keep-alive
content-type:multipart/form-data; boundary=---------------------------5118710224663
content-length:298
]-----------------------------5118710224663
Content-Disposition: form-data; name="myfile"; filename="test.txt"
Content-Type: text/plain
Test data
-----------------------------5118710224663
Content-Disposition: form-data; name="submit"
Submit
-----------------------------5118710224663--
，它通过一个简单的html页面上传，产生下面的转储。将您获得的输出（请同时使用这些输出更新您的问题）与下面的输出进行比较，以便进一步解决此问题。
dumpRequest = true 更新1：更新了Servlet代码和输出。新的servlet可以选择将请求主体写入文件。请使用saveToFile = false，true运行两次以查看响应中的结果，并在问题中更新输出，并在两者中使用\r\n，将请求正文保存在文件中。请在某处上传该文件。
从UploadServlet的第一个输出看，文件数据存在于请求主体中，但是通过commons文件上载不能正确解析它们。如果您使用的是最新版本（即commons-fileupload：1.3，commons-io：2.4）或者您使用的是旧版本，您要么遇到错误（这不是第一次commons upload and Flash don't play nice together）版本，你正在击中那个bug或它的副作用。
因为最可能的原因是Flash使用的行更改或写入边界的方式有问题。无论如何，如果您可以上传一个带有如上所述生成的响应主体的文件，那么也会很棒。请提及您的版本：commons-fileupload，commons-io，Flash player，您正在使用的浏览器。
更新2：很遗憾，我无法使用您提供的文件中的请求正文重现您的情况。虽然看起来Flash没有创建严格有效的请求（它不会在文件的末尾添加额外的Cookie.txt）我可以正常上传此请求同时使用commons-file-upload 1.2和1.3所以我有用尽了想法。
我建议的最后一件事是尝试使用下面的简单html页面从浏览器上传文件。将此文件放在Web应用程序的根目录中并上传文件action（确保表单中的<html>
<body>
<form action="/scm/uploadServlet" method="post" enctype="multipart/form-data">
<label for="file">Filename:</label><br/>
<input type="file" name="myfile" id="file"><br/>
<input type="submit" name="submit" value="Submit">
</form>
</body>
</html>
指向上载servlet）。如果这不起作用那么问题出在commons-file-upload端，虽然我无法想象它可能是什么。密切关注服务器日志（可能是一个例外情况在某处？）也不会受到影响。
唯一可以揭示您问题的安全赌注是下载commons-file-upload的源代码，将其放在您的项目中，而不是将其用作依赖项和调试。由于问题每次都在您的情况下发生，因此找到它应该不会太难。
上传html：
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答案 1 :(得分：0)
正在读取/上载文件的问题是fileupload-1.2没有正确读取数据。 Fileupload-1.3能够正确读取上传的格式。所以flex和fileupload-1.2之间存在一些错误