Servlet not able to retrieve the values from jsp form

Hi
I have a jsp page and one servlet. I want to retrieve form's(which is in jsp) values and then save in my database through servlet.
But in servlet somehow my request is not getting processed.

//jsp page

<td>
project Name
</td>
<td><input type="text" name="projectname" id="projectname" size="25" value="<%=request.getAttribute("pr_name")%>" disabled></input>
</td>

</tr>
<tr>
<td>
Description/Remarks
</td>
<td><input type="text" name="premarks" size="25" value="<%=request.getAttribute("pr_remarks")%>"  disabled></input>
</td>
</tr>
<tr>

<td>
Client IT Contact Person
</td>
<td><input type="text" name="pcontact" size="25" value="<%=request.getAttribute("pr_cnt")%>" disabled></input>
</td>

</tr>
<tr>
 
<td>
Business Sponsor
</td>
<td><input type="text" name="psponsor" size="25" value="<%=request.getAttribute("pr_bsponsor")%>" disabled></input>
</td>
</tr>
<tr>
 
<td>
Business Project owner
</td>
<td><input type="text" name="powner" size="25" value="<%=request.getAttribute("pr_bpowner")%>" disabled></input>
</td>
</tr>
<tr><td>Priority</td>
<td>
<Select name="ppriority" disabled>
<option selected><%=request.getAttribute("pr_priority")%></option>
<option>High</option>
<option>Medium</option>
<option>Low</option>
</Select></td>
</tr>
</table>

<table  class="navigationclass" >
<tr><td > </td></tr>
<tr><td  >Operations</td><td  >Navigation</td></tr>
<tr>
<td><input type="button"   name="save"    value="save"   onclick="savedata();"></td>
<td><input type="button"   name="add"     value="add"    onclick="insert();"></input></td>
<td><input type="button"   name="delete"  value="delete" onclick="deletedata();"></td>
<td><input type="button"   name="cancel"  value="cancel"   onclick="canceldata();"></td>
<td><input type="button"   name="edit"    value="edit" onclick="editdata();"></td>
<td><input type="button"   name="first"   value="first" onclick="firstdata();"></td>
<td><input type="button"   name="prev"    value="prev" onclick="prevdata();"></td>
<td><input type="button"   name="next"    value= "next" onclick="nextdata();"></td>
<td><input type="button"   name="last"    value="last" onclick="lastdata();"></td>
<td><input type="button"   name="find"    value="find" onclick="finddata();" ></td>
</tr>
</table>
<input type="hidden" name="hdnvalue" value="shweta"></input>
</form>

// servlet

String choice = request.getQueryString();
	       // System.out.println("Values of choice" + choice);
	        //String str1 = request.getParameter("hdnvalue");
	        String str1 = request.getParameter("projectname");
	        String str2 = request.getParameter("premarks");
	        String str3 = request.getParameter("pcontact");
	        String str4 = request.getParameter("psponsor");
	        String str5 = request.getParameter("powner");
	        String str6 = request.getParameter("ppriority");
	        //System.out.println("value of project name is"+ str1);
	        Connection con = null;
	        Statement st;
	        ResultSet rs;
	        PreparedStatement pst;
	        
	        try {
	            Class.forName("oracle.jdbc.driver.OracleDriver");

con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/orcl", "scott", "tiger");
	           // String button1 = request.getParameter("next");
	            
	            
	            st=con.createStatement();
	            rs=st.executeQuery("select * from prproject");
	            
	            if(rs.next())
	            { 
	          int i = rs.getInt(1);
	          i++;
	            
	          
	            if (choice!=null)
	            {
	                if (choice.equals("save"))
	                {
	                	System.out.println("save----->");
	                	pst = con.prepareStatement("insert into prproject values(?,?,?,?,?,?,?)");
	                	pst.setInt(1, i);
	                    pst.setString(2 ,str1 );
	                    pst.setString(3 , str2);
	                    pst.setString(4 , str3);
	                    pst.setString(5 , str4);
	                    pst.setString(6 ,str5);
	                    pst.setString(7 ,str6);
	                   
	                    out.println("<html>");
	                    out.println("<head>");
	                    out.println("<title></title>");
	                    out.println("</head>");
	                    out.println("<body>");
	                    
	                    int numRowsChanged = pst.executeUpdate();
	                    
	                     con.commit();

if(numRowsChanged == 0)
	                        {
	                    	 out.println("Error inserting the data");
	                         }
	                    else
	                    {
	                    	
	                    	RequestDispatcher rd=getServletContext().getRequestDispatcher("/project.jsp");
	                        rd.forward(request, response);
	                        
	                    }
	            
	                        
	            out.println("</body>");
	            out.println("</html>");
	            
	                }

The value of String str1 = request.getParameter("projectname") is coming out to be NULL,hence i am not able to store the values in my tables.

The control with the name projectname is disabled.

Thanks Bear i have fixed it but even rest of the controls are not working.

On Button's click i am enabling these controls

Setting .disabled to false does not enable the field. You need to remove the attribute. If the attribute exists on the elment, the element is disabled regardless of the value of the attribute.

I recommend using jQuery. It knows how to do the right thing in a cross browser manner:

hey Bear thanks for the quick reply.I am new to jsp n servlets and alien to Jquery.. i will try to fix is by removing disable option.
Thanks

This is a JavaScript issue ... nothing to do with JSP or Servlets.

Now i have removed javascript thing and removed "disable".But it's still not working. can you suggest some solution?

Thanks

Problem is solved by changing the type of input from Button to Submit