Difference with and without enctype=“multipart/form-data” for html form in browser and server












0














<form action="upload" method="post" enctype="multipart/form-data">
<input type="text" name="description" />
<input type="file" name="file" />
<input type="submit" />
</form>


It is known that the code request.getParameter("description"); returns null.



I do understand that I can get parameter like below explained here (How to upload files to server using JSP/Servlet?). But my question what is the difference while browser sent the data (Like how exactly the request is being constructed) to server with and without enctype="multipart/form-data" or what is different handling done on server side while enctype is set to multipart/form-data



 List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
for (FileItem item : items) {
if (item.isFormField()) {
//my code
}









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    0














    <form action="upload" method="post" enctype="multipart/form-data">
    <input type="text" name="description" />
    <input type="file" name="file" />
    <input type="submit" />
    </form>


    It is known that the code request.getParameter("description"); returns null.



    I do understand that I can get parameter like below explained here (How to upload files to server using JSP/Servlet?). But my question what is the difference while browser sent the data (Like how exactly the request is being constructed) to server with and without enctype="multipart/form-data" or what is different handling done on server side while enctype is set to multipart/form-data



     List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
    for (FileItem item : items) {
    if (item.isFormField()) {
    //my code
    }









    share|improve this question



























      0












      0








      0







      <form action="upload" method="post" enctype="multipart/form-data">
      <input type="text" name="description" />
      <input type="file" name="file" />
      <input type="submit" />
      </form>


      It is known that the code request.getParameter("description"); returns null.



      I do understand that I can get parameter like below explained here (How to upload files to server using JSP/Servlet?). But my question what is the difference while browser sent the data (Like how exactly the request is being constructed) to server with and without enctype="multipart/form-data" or what is different handling done on server side while enctype is set to multipart/form-data



       List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
      for (FileItem item : items) {
      if (item.isFormField()) {
      //my code
      }









      share|improve this question















      <form action="upload" method="post" enctype="multipart/form-data">
      <input type="text" name="description" />
      <input type="file" name="file" />
      <input type="submit" />
      </form>


      It is known that the code request.getParameter("description"); returns null.



      I do understand that I can get parameter like below explained here (How to upload files to server using JSP/Servlet?). But my question what is the difference while browser sent the data (Like how exactly the request is being constructed) to server with and without enctype="multipart/form-data" or what is different handling done on server side while enctype is set to multipart/form-data



       List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
      for (FileItem item : items) {
      if (item.isFormField()) {
      //my code
      }






      jsp servlets file-upload






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 24 '18 at 13:57

























      asked Nov 17 '18 at 10:19









      secret super star

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