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request.getparameter("fname") //I can't able to get value.
<html>
<head>
<title>File Uploading Form</title>
</head>
<body>
<h3>File Upload:</h3>
Select a file to upload: <br />
<form action="UploadServlet" method="post"
enctype="multipart/form-data">
<input type="text" name="fname" size="50" />
<input type="file" name="file" size="50" />
<input type="submit" value="Upload File" />
</form>
</body>
</html>
My question is : How to pass fname parameter in multipart post request?
635
You should use request. getparameter("fname"). Maybe action is UploadServlet.
Multipart form data: The ENCTYPE attribute of <form> tag specifies the method of encoding for the form data. It is one of the two ways of encoding the HTML form. It is specifically used when file uploading is required in HTML form. It sends the form data to server in multiple parts because of large size of file.
Short answer: you will find the fname in the Parts of the request.
Long answer: For multipart type requests, even the simple <input type="text"> field values are placed in parts. You will have to iterate over the Part objects returned by HttpServletRequest.getParts() and handle them according to their name property:
for( Part p : request.getParts() ) {
if( "fname".equals(p.getName()) ) {
...
}
else if( "file".equals(p.getName()) ) {
...
}
}
To complicate things further, the content of the part is available as InputStream - Part.getInputStream() - so you will have to do a little transforming stream → byte[] → String to get the value.
134
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