Step 1:

You need to create a Log4J property files , take a look at a sample below.

log = C://logs//log

log4j.rootLogger = INFO, FILE

# Define the file appender
log4j.appender.FILE=util.ownHTMLFileAppender

log4j.appender.FILE.File=${log}/ServiceResult.html

# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.HTMLLayout
log4j.appender.FILE.layout.Title=HTML Layout Example
log4j.appender.FILE.layout.LocationInfo=true

Step 2:

Create your own "ownHTMLFileAppender"

package util;

import java.io.File;
import java.io.IOException;

import org.apache.log4j.FileAppender;
import org.apache.log4j.Layout;
import org.apache.log4j.spi.ErrorCode;

/**
* This is a customized log4j appender, which will create a new file for every
* run of the application.
*
*
*/
public class OwnHTMLFileAppender extends FileAppender {

public OwnHTMLFileAppender() {
}

public OwnHTMLFileAppender(Layout layout, String filename,
  boolean append, boolean bufferedIO, int bufferSize)
  throws IOException {
 super(layout, filename, append, bufferedIO, bufferSize);
}

public OwnHTMLFileAppender(Layout layout, String filename,
  boolean append) throws IOException {
 super(layout, filename, append);
}

public OwnHTMLFileAppender(Layout layout, String filename)
  throws IOException {
 super(layout, filename);
}

public void activateOptions() {
if (fileName != null) {
 try {
  fileName = getNewLogFileName();
  setFile(fileName, fileAppend, bufferedIO, bufferSize);
 } catch (Exception e) {
  errorHandler.error("Error while activating log options", e,
    ErrorCode.FILE_OPEN_FAILURE);
 }
}
}

private String getNewLogFileName() {
if (fileName != null) {
 final String DOT = ".";
 final String HIPHEN = "-";
 final File logFile = new File(fileName);
 final String fileName = logFile.getName();
 String newFileName = "";

 final int dotIndex = fileName.indexOf(DOT);
 if (dotIndex != -1) {
  // the file name has an extension. so, insert the time stamp
  // between the file name and the extension
  newFileName = fileName.substring(0, dotIndex) + HIPHEN
    + +System.currentTimeMillis() + DOT
    + fileName.substring(dotIndex + 1);
 } else {
  // the file name has no extension. So, just append the timestamp
  // at the end.
  newFileName = fileName + HIPHEN + System.currentTimeMillis();
 }
 return logFile.getParent() + File.separator + newFileName;
}
return null;
}
}

Step 3:

Read the Properties File

static {

PropertyConfigurator.configure("C://ServiceTestNew//conf//log4j.properties");

}

Step4:

private final static Logger log = Logger.getLogger(ValidateLogger.class);

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