CODEWITHSUNDEEP
javajspservletspostget
Νίκος Διαμαντόγιαννης
Νίκος Διαμαντόγιαννης

Reputation: 85

JSP form sending data including files in servlet

I am tryig to send some data from jsp form to a servlet. All my data are type="text" except from one that is type="file". I know that if i want to send the data to my servlet, i have to use request.getParameter(...). (My data) In order not to be null i have to use method="get". But if i want to upload a file i have to use method="post". How can i pass both types to my servlet using one form? Thanks in advance!

.jsp

<form method="post" action="Servlet">
user:<input type="text" name="user"/>
img<input type="file" name="img"/>
</form>

Servlet.java

doPost(req,resp){
user = req.getParameter("user");//user == NULL
}

OR

.jsp

<form method="get" action="Servlet">
user:<input type="text"/>
img<input type="file"/>
</form>

Servlet.java

doGet(req,resp){
//img not passed
}

Upvotes: 1

Views: 1137

Answers (1)

brso05
brso05

Reputation: 13222

Form:

<form id="uploadForm" name="uploadForm" action="UploadServlet" method="post" enctype="multipart/form-data">
    user:<input type="text" name="user"/>
    img<input type="file" name="image"/>
</form>

You can still get both with a post request:

protected void doPost(HttpServletRequest request, HttpServletResponse response) {
    List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
    InputStream fileContent = null;
    String user = "";
    for (FileItem item : items) 
    {
        if (item.isFormField()) 
        {
            String fieldName = item.getFieldName();
            String fieldValue = item.getString();
            if(fieldName.equalsIgnoreCase("user"))
            {
                user = fieldValue;
            }
        }
        else 
        {
            String fieldName = item.getFieldName();
            if(fieldName.equalsIgnoreCase("image"))
            {
                fileContent = item.getInputStream();
            } 
        }
    }
}

This is just an example of how to handle post request with file type.

Upvotes: 1

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