java - 跨多个类使用 java.util.logging

Question

我在网上找到了这个使用java.util.logging的例子here 。我不明白如何修改它以跨多个类使用示例
我是否只需在每个类(class)中声明这一点？

Logger logger = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);  

也在类里面，他们提供了一个语法错误:

// suppress the logging output to the console
Logger rootLogger = Logger.*getLogger*("");

访问根记录器的正确方法是什么？

package com.vogella.logger;

import java.io.IOException;
import java.util.logging.FileHandler;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;

public class MyLogger {
    static private FileHandler fileTxt;
    static private SimpleFormatter formatterTxt;

    static private FileHandler fileHTML;
    static private Formatter formatterHTML;

    static public void setup() throws IOException {

        // get the global logger to configure it
        Logger logger = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);

        // suppress the logging output to the console
        Logger rootLogger = Logger.*getLogger*("");
        Handler[] handlers = rootLogger.getHandlers();
        if (handlers[0] instanceof ConsoleHandler) {
            rootLogger.removeHandler(handlers[0]);
        }

        logger.setLevel(Level.INFO);
        fileTxt = new FileHandler("Logging.txt");
        fileHTML = new FileHandler("Logging.html");

        // create a TXT formatter
        formatterTxt = new SimpleFormatter();
        fileTxt.setFormatter(formatterTxt);
        logger.addHandler(fileTxt);

        // create an HTML formatter
        formatterHTML = new MyHtmlFormatter();
        fileHTML.setFormatter(formatterHTML);
        logger.addHandler(fileHTML);
    }
}

Answer 1

是。使用GLOBAL_LOGGER_NAME如链接的 Javadoc 中所述，还可以使用每个类的全局记录器进行日志记录。虽然用处不大，因为它是提供的默认 java 记录器。

GLOBAL_LOGGER_NAME is a name for the global logger. This name is provided as a convenience to developers who are making casual use of the Logging package....

The preferred way to get the global logger object is via the call Logger.getLogger(Logger.GLOBAL_LOGGER_NAME).

它也是 Logger.getGlobal() 的替代品来自较旧的 jdk 版本。

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要配置根记录器，请使用:-

Logger logger = Logger.getLogger("");