Log4j文件大小

Question

I am using log4j for logging of my Java project. I am creating three types of log files called "info","debug" and "error". I have set the option of max size of each file. But they are not limiting the size as we have set.

Code for debug file is -

public class DebugAppender extends RollingFileAppender {

    /** Creates a new instance of DebugAppender */
    public DebugAppender(String debuglogname, String path, String logfilesize) {
        String Filename = null;
        if (path == null || path.equalsIgnoreCase("")) {
            Filename = "Logs" + File.separator + debuglogname + ".log";
        } else {
            Filename = path + File.separator + "Logs" + File.separator + debuglogname + ".log";
        }
        super.setFile(Filename);
        setMaxFileSize(logfilesize);
        setMaxBackupIndex(2);
        setAppend(true);
        setLayout(new PatternLayout("%d{DATE}  %-5p %c{1} : %m%n"));
        activateOptions();
    }

    public String getFName() {
        return super.getFile();
    }
}

Calling of Debug logger is -

Logger debugLogger = Logger.getLogger(LogHandler.class.getName() + "Debug");
DebugAppender objDebugAppender = new DebugAppender(debugFileName, sTempPath, "1MB");
debugLogger.addAppender(objDebugAppender);

We are setting its size to "1MB", but they all three files are not limiting to 1 MB, they get exceed to GBs. How can I limit their size. If any setting needed to set then please let me know.

Thanks

Answer 1

You have to set the file size of the log file through log4j properties file

log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1

Answer 2

In the xml format it would be

<param name="MaxFileSize" value="1MB" />  
<param name="MaxBackupIndex" value="1" />