我想将表单页面中的图像和其他文本字段添加到数据库中。我没有收到错误但是当我点击按钮时我得到空白页面。请解决我的问题..在add_ckt_products.jsp文件中我的表单元素可用，在uploadFile.jsp文件中我的数据库连接和查询可用。
ckt_products.jsp
<form class="form-horizontal" enctype="multipart/form-data" action="uploadFile.jsp">
<fieldset>
<div class="control-group">
<label class="control-label" for="typeahead">Product Image</label>
<div class="controls">
<input type="file" class="form-control" name="ck_product_image" id="txtimage" required="required">
<span>Image Size (698 X 352)</span>
</div>
</div>
<div class="control-group">
<label class="control-label" for="typeahead">Product Name: </label>
<div class="controls">
<input type="text" class="span6 typeahead" id="typeahead" name="ck_product_name" data-provide="typeahead" data-items="4" reqired=""/>
</div>
</div>
<div class="control-group">
<label class="control-label" for="typeahead">Product Type: </label>
<div class="controls" >
<input type="radio" class="span6 typeahead" id="typeahead" name="ck_product_type" data-provide="typeahead" data-items="4" value="Cricket Bats" required=""/>Cricket Bats
<input type="radio" class="span6 typeahead" id="typeahead" name="ck_product_type" data-provide="typeahead" data-items="4" value="Tennis Cricket Ball" required=""/>Tennis Cricket Ball
</div>
</div>
<div class="control-group">
<label class="control-label" for="typeahead">Product Brand: </label>
<div class="controls">
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="MRF" data-items="4"/>MRF
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="TON" data-items="4"/>TON
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="SG" data-items="4"/>SG
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="PUMA" data-items="4"/>PUMA
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="NIVIA" data-items="4"/>NIVIA
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="GM" data-items="4"/>GM
<input type="checkbox" class="span6 typeahead" id="typeahead" name="ck_product_brand" data-provide="typeahead" value="GURU" data-items="4"/>GURU
</div>
</div>
<div class="control-group">
<label class="control-label" for="typeahead">Product Price: </label>
<div class="controls">
<input type="number" class="span6 typeahead" id="typeahead" name="ck_product_price" data-provide="typeahead" data-items="4" reqired="true"/>
</div>
</div>
<div class="control-group">
<label class="control-label" for="typeahead">Product Price Range: </label>
<div class="controls">
<input type="radio" class="span6 typeahead" id="typeahead" name="ck_product_price_range" data-provide="typeahead" data-items="4" value="Under 500" required=""/>Under ₹500
<input type="radio" class="span6 typeahead" id="typeahead" name="ck_product_price_range" data-provide="typeahead" data-items="4" value="Under 1000" required=""/>Under ₹1000
<input type="radio" class="span6 typeahead" id="typeahead" name="ck_product_price_range" data-provide="typeahead" data-items="4" value="Between 1000 1500" required=""/>Between ₹1000 to ₹1500
</div>
</div>
<div class="form-actions">
<button type="submit" class="btn btn-primary">Save changes</button>
<button type="reset" class="btn">Cancel</button>
</div>
</fieldset>
</form>
uploadFile.jsp
<%--
Document : uploadFile
Created on : Jul 17, 2017, 10:33:29 AM
Author : Administrator
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import="java.io.*,java.sql.*,java.util.zip.*" %>
<%
int no1=1;
String saveFile="";
String contentType = request.getContentType();
if((contentType != null)&&(contentType.indexOf("multipart/form-data") >= 0))
{
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while(totalBytesRead < formDataLength){
byteRead = in.read(dataBytes, totalBytesRead,formDataLength);
totalBytesRead += byteRead;
}
out.println("sdf1");
String file = new String(dataBytes);
saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
int lastIndex = contentType.lastIndexOf("=");
String boundary = contentType.substring(lastIndex + 1,contentType.length());
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
int boundaryLocation = file.indexOf(boundary, pos) - 4;
int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
File ff = new File("E:/Parth_Enterprise/web/img/gallery/"+saveFile);
FileOutputStream fileOut = new FileOutputStream(ff);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();
%><br><table border="2"><tr><td><b>You have successfully upload the file:</b>
<%out.println(saveFile);%></td></tr></table>
<%
Connection connection = null;
String connectionURL = "jdbc:mysql://localhost:3306/parth_enterprise?zeroDateTimeBehavior=convertToNull";
PreparedStatement psmnt = null;
try{
String ck_product_type=request.getParameter("ck_product_type");
String ck_product_name=request.getParameter("ck_product_name");
String ck_product_brand[]=request.getParameterValues("ck_product_brand");
String brand="";
for(String b:ck_product_brand)
{
brand=brand+b;
}
int ck_product_price=Integer.parseInt(request.getParameter("ck_product_price"));
String ck_product_price_range=request.getParameter("ck_product_price_range");
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection(connectionURL, "root","");
psmnt = connection.prepareStatement("insert into cricket_product(ck_product_id,ck_product_image,ck_product_type,ck_product_name,ck_product_brand,ck_product_price,ck_product_price_range,ck_product_status) values(?,?,?,?,?,?,?,?)");
psmnt.setString(1,null);
psmnt.setString(2,ff.getPath());
psmnt.setString(3,ck_product_type);
psmnt.setString(4,ck_product_name);
psmnt.setString(5,brand);
psmnt.setInt(6,ck_product_price);
psmnt.setString(7,ck_product_price_range);
psmnt.setString(8,"In Stock");
int s = psmnt.executeUpdate();
if(s>0)
{
response.sendRedirect("http://localhost:8084/Parth_Enterprise/index.jsp?mo=view_ckt_products");
}
else
{
System.out.println("Error!");
}
}
catch(Exception e)
{
out.println(e);
e.printStackTrace();
}
}
%>