bonjour tous ,

lorsque j essaie d' inséré de donnée dans ma base donnée via un formulaire j 'ai un message d 'erreur :
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 exception 
 
java.lang.NumberFormatException: For input string: " 3"
	java.lang.NumberFormatException.forInputString(Unknown Source)
	java.lang.Integer.parseInt(Unknown Source)
	java.lang.Integer.parseInt(Unknown Source)
	be.controller.ControllerSupplier.doGet(ControllerSupplier.java:37)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
page jps
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<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
 
	<FORM action="ControllerSupplier" method="get">
		<table>
            <tr>
				<td>Name</td>
				<td><input type="text" value=" " maxlength="30" name="name" /></td>
           </tr>
			<tr>
				<td>Country :</td>
				<td><input type="text" value=" " maxlength="30" name="country" /></td>
           </tr>
			<tr>
				<td>Street</td>
				<td><input type="text" value=" " maxlength="30" name="street" /></td>
 
			</tr>
			<tr>
				<td>ZipCode :</td>
				<td><input type="text" value=" " maxlength="30" name="zipcode" /></td>
 
			</tr>
			<tr>
				<td>Number :</td>
				<td><input type="text" value=" " maxlength="30" name="numhouse" /></td>
 
			</tr>
 
			<tr>
 
				<td><input type="submit" value="Valide " maxlength="30"
					name="valide" /></td>
 
			</tr>
		</table>
 
	</FORM>
 
</body>
</html>
voici le contrôleur servlet
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/**
 * Servlet implementation class ControllerSupplier
 */
@WebServlet("/ControllerSupplier")
public class ControllerSupplier extends HttpServlet {
	private static final long serialVersionUID = 1L;
 
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ControllerSupplier() {
        super();
        // TODO Auto-generated constructor stub
    }
 
	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Supplier supplier = new Supplier();
		supplier.setName(request.getParameter("name"));
		supplier.setStreet(request.getParameter("street"));
		supplier.setCoutnry(request.getParameter("country"));
		supplier.setZipCode(Integer.parseInt(request.getParameter("zipcode")));
		supplier.setHousenumber(Integer.parseInt(request.getParameter("numhouse")));
       SupplierDao.addSupplier(supplier);		
 
	}
 
	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}
 
}
merci pour votre aide