相关疑难解决方法(0)

状态的JavaDocsjava.util.logging.Level:

降序的级别是:

• SEVERE (最高价值)
• WARNING
• INFO
• CONFIG
• FINE
• FINER
• FINEST (最低价值)

资源

import java.util.logging.*;

class LoggingLevelsBlunder {

    public static void main(String[] args) {
        Logger logger = Logger.getAnonymousLogger();
        logger.setLevel(Level.FINER);
        System.out.println("Logging level is: " + logger.getLevel());
        for (int ii=0; ii<3; ii++) {
            logger.log(Level.FINE, ii + " " + (ii*ii));
            logger.log(Level.INFO, ii + " " + (ii*ii));
        }
    }
}

产量

Logging level is: FINER
Jun 11, 2011 9:39:23 PM LoggingLevelsBlunder main
INFO: 0 0
Jun 11, 2011 9:39:24 PM …

我有一个愚蠢的java日志记录问题:我正在从我的应用程序配置文件加载日志记录配置 - 但它只是在读取文件后没有记录任何内容(这看起来很像你将在网上找到的例子,除了额外的应用程序配置 - 删除它也没有帮助)."初始化..."日志行显得很好,但"启动应用程序"和任何其他消息既没有记录到控制台,也没有创建日志文件.我在这里错过了什么？

Logger代码如下所示:

...
Logger log = Logger.getLogger("myApp");
log.setLevel(Level.ALL);
log.info("initializing - trying to load configuration file ...");

Properties preferences = new Properties();
try {
    FileInputStream configFile = new FileInputStream("/path/to/app.properties");
    preferences.load(configFile);
    LogManager.getLogManager().readConfiguration(configFile);
} catch (IOException ex)
{
    System.out.println("WARNING: Could not open configuration file");
    System.out.println("WARNING: Logging not configured (console output only)");
}
log.info("starting myApp");
...

这是配置文件:

appconfig1 = foo
appconfig2 = bar

# Logging
handlers = java.util.logging.FileHandler, java.util.logging.ConsoleHandler
.level = ALL

# File Logging
java.util.logging.FileHandler.pattern = %h/myApp.log
java.util.logging.FileHandler.formatter = …