java – 日志记录不适用于较低级别

我正在使用java.util.logging,它适用于高于FINE的更高级别,但不适用于较低级别,但我已将级别设置为FINEST.我也试过给它Level.ALL.我有如下用户定义的类.

public class Tracer extends Logger {
    public Tracer(String name) {
        super(name, null);
        addFileHandler();
        addConsoleHandler();
    }

    private void addConsoleHandler() {
        SSFormatter ssFormatter = new SSFormatter();
        ConsoleHandler consoleHandler = new ConsoleHandler();
        consoleHandler.setFormatter(ssFormatter);
        consoleHandler.setLevel(Level.FINEST);
        this.addHandler(consoleHandler);
    }

    private void addFileHandler() {
        try {
            FileHandler fileHandler = new FileHandler("log.txt", false);
            fileHandler.setFormatter(new SSFormatter());
            fileHandler.setLevel(Level.FINEST);
            this.addHandler(fileHandler);
        } catch (SecurityException e) {
            e.printStackTrace();
            this.warning("SecurityException occurred while adding FileHandler");
        } catch (IOException e) {
            e.printStackTrace();
            this.warning("IOException occurred while adding FileHandler");
        }
    }

    private class SSFormatter extends Formatter {

        @Override
        public String format(LogRecord paramLogRecord) {
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append(paramLogRecord.getLoggerName()).append("|")
                    .append(paramLogRecord.getSourceClassName()).append("|")
                    .append(paramLogRecord.getSourceMethodName()).append(":::")
                    .append(paramLogRecord.getMessage()).append("\n");
            return stringBuilder.toString();
        }
    }
    public static void main(String[] args) {
        Tracer tracer = new Tracer("ss.tracer");
        tracer.info("This is to test my tracer");
        tracer.warning("This is warning from my tracer");
        tracer.severe("This is severe from my tracer");
        tracer.fine("this is fine");
        tracer.finer("this is finer");
        tracer.finest("this is finest");
    }
}

当我运行main方法时,我得到控制台和文件输出如下

ss.tracer|screen.seizer.trace.Tracer|main:::This is to test my tracer
ss.tracer|screen.seizer.trace.Tracer|main:::This is warning from my tracer
ss.tracer|screen.seizer.trace.Tracer|main:::This is severe from my tracer

谢谢,希望我已经提出了我的问题.

解决方法:

I am using java.util.logging, which works fine for higher levels above FINE but doesn’t work for lower levels, though I have set level as FINEST.

处理程序具有级别,但Logger还具有默认为INFO的级别.这是Logger构造函数中的行：

levelValue = Level.INFO.intValue();

即使处理程序中的级别低于INFO,如果记录器级别更高,那么这些日志消息都不会进入处理程序.在每种方法中都有以下检查：

if (Level.FINE.intValue() < levelValue) {
    return;
}

如果您在主要内容中调用类似以下内容的内容,则将打印所有级别消息.

tracer.setLevel(Level.ALL);

标签：java-util-logging,java,logging
来源： https://codeday.me/bug/20190902/1792209.html