How to upload files to server using JSPServlet Introduction. To browse and select a file for upload you need a HTML lt input typefile field in the form. As stated in the HTML specification you have to use the POST method and the enctype attribute of the form has to be set to multipartform data. After submitting such a form, the binary multipart form data is available in the request body in a different format than when the enctype isnt set. Before Servlet 3. Servlet API didnt natively support multipartform data. Get a Web developers feature review of five leading Java file upload solutions. This is a. zip readable by jar, newer releases are at the top. To be notified when new versions release, subscribe here. Java. io. IOException Posted content type isnt multipartformdata at com. MultipartParser. MultipartParser. AZyYScotvw/UkBMCJd_kZI/AAAAAAAAAyc/o4Ydwls8VFs/s1600/1.PNG' alt='Com Oreilly Servlet Multipartrequest' title='Com Oreilly Servlet Multipartrequest' />It supports only the default form enctype of applicationx www form urlencoded. The request. get. Parameter and consorts would all return null when using multipart form data. This is where the well known Apache Commons File. Upload came into the picture. Dont manually parse it You can in theory parse the request body yourself based on Servlet. Requestget. Input. Stream. However, this is a precise and tedious work which requires precise knowledge of RFC2. You shouldnt try to do this on your own or copypaste some homegrown library less code found elsewhere on the Internet. Many online sources have failed hard in this, such as roseindia. P9z3_206031.png' alt='Com Oreilly Servlet Multipartrequest' title='Com Oreilly Servlet Multipartrequest' />Servlets. JavaServer Pages JSP developers. Features news, useful servlet resources, comprehensive links, and. See also uploading of pdf file. You should rather use a real library which is used and implicitly tested by millions of users for years. Such a library has proven its robustness. When youre already on Servlet 3. APIIf youre using at least Servlet 3. Tomcat 7, Jetty 9, JBoss AS 6, Glass. Fish 3, etc, then you can just use standard API provided Http. Servlet. Requestget. Part to collect the individual multipart form data items most Servlet 3. Apache Commons File. Upload under the covers for this. Also, normal form fields are available by get. Parameter the usual way. First annotate your servlet with Multipart. ZnJvbT1jbmJsb2dzJnVybD1jR2NxNWlONFFUT3lJVE8yRXpNeWdUTXhBekx5QUROeEFqTXZrak41a0ROMDh5WnZ4bVl2MDJiajV5WnZ4bVkwbG1iajV5Y2xkV1l0bDJMdm9EYzBSSGE.jpg' alt='Com Oreilly Servlet Multipartrequest' title='Com Oreilly Servlet Multipartrequest' />Config in order to let it recognize and support multipartform data requests and thus get get. Part to work Web. Servletupload. Multipart. Config. Upload. Servlet extends Http. Servlet. Then, implement its do. Post as follows protected void do. PostHttp. Servlet. Request request, Http. Servlet. Response response throws Servlet. Exception, IOException. String description request. Parameterdescription Retrieves lt input typetext namedescription. Part file. Part request. Partfile Retrieves lt input typefile namefile. String file. Name Paths. Part. get. Submitted. File. Name. get. File. Name. to. String MSIE fix. Input. Stream file. Content file. Part. Input. Stream. Note the Pathget. File. Name. This is a MSIE fix as to obtaining the file name. This browser incorrectly sends the full file path along the name instead of only the file name. In case you have a lt input typefile namefile multipletrue for multi file upload, collect them as below unfortunately there is no such method as request. Partsfile protected void do. PostHttp. Servlet. Request request, Http. Servlet. Response response throws Servlet. Exception, IOException. Listlt Part file. Parts request. get. Parts. stream. Name. Collectors. List Retrieves lt input typefile namefile multipletrue. Part file. Part file. Parts. String file. Name Paths. getfile. Part. get. Submitted. File. Name. get. File. Name. to. String MSIE fix. Input. Stream file. Content file. Part. Input. Stream. When youre not on Servlet 3. Note that Partget. Submitted. File. Name was introduced in Servlet 3. Tomcat 8, Jetty 9, Wild. Fly 8, Glass. Fish 4, etc. If youre not on Servlet 3. String get. Submitted. File. NamePart part. String cd part. Headercontent disposition. Withfilename. String file. Name cd. Of 1. trim. Name. substringfile. Name. last. Index. Of 1. substringfile. Name. last. Index. Of 1 MSIE fix. String file. Name get. Submitted. File. Namefile. Part. Note the MSIE fix as to obtaining the file name. This browser incorrectly sends the full file path along the name instead of only the file name. When youre not on Servlet 3. Apache Commons File. Upload. If youre not on Servlet 3. Apache Commons File. Upload to parse the multpart form data requests. It has an excellent User Guide and FAQ carefully go through both. Theres also the OReilly cos Multipart. Request, but it has some minor bugs and isnt actively maintained anymore for years. I wouldnt recommend using it. Apache Commons File. Upload is still actively maintained and currently very mature. In order to use Apache Commons File. Upload, you need to have at least the following files in your webapps WEB INFlib Your initial attempt failed most likely because you forgot the commons IO. Heres a kickoff example how the do. Post of your Upload. Servlet may look like when using Apache Commons File. Upload protected void do. PostHttp. Servlet. Request request, Http. Servlet. Response response throws Servlet. Exception, IOException. Listlt File. Item items new Servlet. File. Uploadnew Disk. File. Item. Factory. Requestrequest. File. Item item items. Form. Field. Process regular form field input typetextradiocheckboxetc, select, etc. String field. Name item. Field. Name. String field. Value item. get. String. Process form file field input typefile. String field. Name item. Field. Name. String file. Name Filename. Utils. Activate Mpeg 4 Encoding In Pinnacle Studio 10. Nameitem. get. Name. Input. Stream file. Content item. get. Input. Stream. File. Upload. Exception e. Servlet. ExceptionCannot parse multipart request., e. Its very important that you dont call get. Parameter, get. Parameter. Map, get. Parameter. Values, get. Input. Stream, get. Reader, etc on the same request beforehand. Otherwise the servlet container will read and parse the request body and thus Apache Commons File. Upload will get an empty request body. See also a. o. Servlet. File. Uploadparse. Requestrequest returns an empty list. Note the Filename. Utilsget. Name. This is a MSIE fix as to obtaining the file name. This browser incorrectly sends the full file path along the name instead of only the file name. Alternatively you can also wrap this all in a Filter which parses it all automagically and put the stuff back in the parametermap of the request so that you can continue using request. Parameter the usual way and retrieve the uploaded file by request. Attribute. You can find an example in this blog article. Workaround for Glass. Fish. 3 bug of get. Parameter still returning null. Note that Glassfish versions older than 3. Parameter still returns null. If you are targeting such a container and cant upgrade it, then you need to extract the value from get. Part with help of this utility method private static String get. ValuePart part throws IOException. Buffered. Reader reader new Buffered. Readernew Input. Stream. Readerpart. Input. Stream, UTF 8. String. Builder value new String. Builder. char buffer new char1. String. String description get. Valuerequest. get. Partdescription Retrieves lt input typetext namedescription. Saving uploaded file dont use get. Real. Path nor part. Head to the following answers for detail on properly saving the obtained Input. Stream the file. Content variable as shown in the above code snippets to disk or database Serving uploaded file.