problem in checking the entered value with the existing value

[madhuri kunchala]

hi,
i developed XML file..in the project i used jsp pages and servlets...if i enter the value in the jsp page..it is passed to the servlet and it is not validating it...it is showing all the values..i dont need all the values...whatever value entered in jsp page..it should take that one....and while running it is showing error...here is my code...i need help

view.jsp

  

<td></td>
                        <td><font color="#800000"> </font><font color="#800000"><b>Pack Name</b></font><font color="#800000" size=""> </font></td>
                        <td><input name="packName" type="text" id="packName"> </td>
                        <td></td>

[b]view.java[b]

   

package proj;

import java.io.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;

public class view extends HttpServlet {

    private static PrintWriter out;

    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("application/xml");
        PrintWriter pw = response.getWriter();
        String s = request.getParameter("packName");

        //Validating entered PackName equal with the existing one
        
        if (s.equalsIgnoreCase("packName")) {
        try {
            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder docBuilder = builderFactory.newDocumentBuilder();

            // Creating the path for XML File using Properties
            ServletContext servletContextObj = request.getSession().getServletContext();
            String excelTemplatesPath = servletContextObj.getRealPath("/");
            String filePaths = excelTemplatesPath + File.separator
                    + "config.properties";
            Properties propObj = new Properties();
            propObj.load(new FileInputStream(filePaths));
            String gprsLoginPath = null;
            gprsLoginPath = propObj.getProperty("GPRS_LOGIN_PATH");
            if (gprsLoginPath == null || gprsLoginPath.trim().equals("")) {
                gprsLoginPath = excelTemplatesPath;
            }
            gprsLoginPath += File.separator + "login.xml";
            java.io.File file = new java.io.File(gprsLoginPath);
            Document doc = null;
            if (file.exists()) {
                try {
                    doc = docBuilder.parse(file);
                } catch (Exception ex) {
                    doc = docBuilder.newDocument();
                    Element root = doc.createElement("PACKS");
                    doc.appendChild(root);
                }
            } else {
                doc = docBuilder.newDocument();
                // Creating Root Tag
                Element root = doc.createElement("PACKS");
                doc.appendChild(root);
            }

            // creating a new instance of a DOM to build a DOM tree.
            // Document doc = docBuilder.newDocument();
            readdata(file, doc, pw);
            //pw.println("<b>Xml File Viewed Successfully</b>");
        } catch (Exception e) {
            System.out.println(e);
            e.printStackTrace();
        }
    }
    else
    {
        pw.println("error");
    }
    }

public static void readdata(java.io.File file, Document doc, PrintWriter out) throws Exception {
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        StringWriter writer = new StringWriter();
        StreamResult result = new StreamResult(writer);
        DOMSource source = new DOMSource(doc);
        transformer.transform(source, result);
        String xmlString = writer.toString();
        out.println(xmlString);
}
}
        

and im getting error as

 

XML Parsing Error: syntax error
Location: http://localhost:8080/proj/viewXml
Line Number 1, Column 1:error
^

thanks,
madhu.

[David Newton]

Font tags?!

So you're getting an error in the XML, but don't show any of the XML, so... I've got nothing.

[Sridhar Gudipalli]

 <td><font color="#800000"> </font><font color="#800000"><b>Pack Name</b></font><font color="#800000" size=""> </font></td>   

Cant you replace this line with below? Why are you using unnecessary font tags?

<td><font color="#800000"><b>Pack Name</b></font></td>

  
        String s = request.getParameter("packName");   
        //Validating entered PackName equal with the existing one   
        if (s.equalsIgnoreCase("packName")) { 

Do you always enter the "Pack Name" value as "packName"? (case insensitive). You are reading the packName value from the request and checking if the value is "packName".. Are you missing some thing here or doing this intentionally?

[David Newton]

Sridhar Gudipalli wrote:Why are you using unnecessary any font tags?

Fixed.