problem in removing spaces in xml file

[madhuri kunchala]

hi good morning,
i developed web application..in it i need to create XML file i had developed the problem is if im doing delete operation...it is deleting by leaving spaces between Element Nodes..i had changed the code ...here is my code...can any one suggest me how to do.. and my output is also i m providing...its urgent can anyone help me...

delete.java

 
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 delete extends HttpServlet {

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

        response.setContentType("text/html");
        PrintWriter pw = response.getWriter();
        String packName = request.getParameter("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);
            }
           delNode(file, doc, packName);
            pw.println("<b>Xml File Deleted Successfully</b>");
        } catch (Exception e) {
            System.out.println(e);
        }
    }
      public static void delNode(java.io.File file, Document parent, String filtervalue)
            throws Exception {
        NodeList nodeList = parent.getElementsByTagName("PACK_NAME");
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node child = nodeList.item(i);
            System.out.println("child " + child.getTextContent());
              if (child.getTextContent() != null && child.getTextContent().trim().equalsIgnoreCase(filtervalue.trim()) && child.getNodeType() == Node.TEXT_NODE) {
                Node packNode = child.getParentNode().getParentNode();
                Node packsNode = parent.getFirstChild();
                packsNode.removeChild(packNode);
                break;
            }
        }
        parent.normalize();
        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        StringWriter sw = new StringWriter();
        StreamResult result = new StreamResult(sw);
        DOMSource source = new DOMSource(parent);
        transformer.transform(source, result);
        String xmlString = sw.toString();
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
                new FileOutputStream(file)));
        bw.write(xmlString);
        bw.flush();
        bw.close();
   }
}

the output before deleting is

 
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<PACKS>
<MA05>
<GENERAL>
<PACK_NAME>WAP_05</PACK_NAME>
<ACT_STATUS>MA05</ACT_STATUS>
<DEACT_STATUS>MD05</DEACT_STATUS>
<ALLOW_POSTPAID>TYPE,2:</ALLOW_POSTPAID>
<SHORT_CODE>1</SHORT_CODE>
<ACT_KEYWORD>MOM</ACT_KEYWORD>
<DEACT_KEYWORD>UMO</DEACT_KEYWORD>
<ACT_SUCCESS_SWITCHACTIVATE>1</ACT_SUCCESS_SWITCHACTIVATE>
<DEACT_SUCCESS_SWITCHACTIVATE>1</DEACT_SUCCESS_SWITCHACTIVATE>
<ONLY_BILLING>YES</ONLY_BILLING>
<BAL_TO_CHK>0</BAL_TO_CHK>
</GENERAL>
</MA05>
<MA00>
<GENERAL>
<PACK_NAME>WAP_03</PACK_NAME>
<ACT_STATUS>MA00</ACT_STATUS>
<DEACT_STATUS>MD00</DEACT_STATUS>
<ALLOW_POSTPAID>TYPE,1:</ALLOW_POSTPAID>
<SHORT_CODE>1</SHORT_CODE>
<ACT_KEYWORD>MOM</ACT_KEYWORD>
<DEACT_KEYWORD>UMO</DEACT_KEYWORD>
<ACT_SUCCESS_SWITCHACTIVATE>1</ACT_SUCCESS_SWITCHACTIVATE>
<DEACT_SUCCESS_SWITCHACTIVATE>1</DEACT_SUCCESS_SWITCHACTIVATE>
<ONLY_BILLING>YES</ONLY_BILLING>
<BAL_TO_CHK>0</BAL_TO_CHK>
</GENERAL>
</MA00>
</PACKS>

the output after deleting is

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<PACKS>
<MA05>
<GENERAL>
<PACK_NAME>WAP_05</PACK_NAME>
<ACT_STATUS>MA05</ACT_STATUS>
<DEACT_STATUS>MD05</DEACT_STATUS>
<ALLOW_POSTPAID>TYPE,2:</ALLOW_POSTPAID>
<SHORT_CODE>1</SHORT_CODE>
<ACT_KEYWORD>MOM</ACT_KEYWORD>
<DEACT_KEYWORD>UMO</DEACT_KEYWORD>
<ACT_SUCCESS_SWITCHACTIVATE>1</ACT_SUCCESS_SWITCHACTIVATE>
<DEACT_SUCCESS_SWITCHACTIVATE>1</DEACT_SUCCESS_SWITCHACTIVATE>
<ONLY_BILLING>YES</ONLY_BILLING>
<BAL_TO_CHK>0</BAL_TO_CHK>
</GENERAL>
</MA05>

</PACKS>

it is leaving space after </MA05> and </PACKS> tag...can anyone provide me the solution..

thanks in advance,
madhu.

[Jaikiran Pai]

How is this any different, from the lengthy discussion we had in your other thread, here yesterday https://coderanch.com/t/503777/XML/unable-remove-spaces-xml

Closing this one.