java.util.logging

问题 This is a bit weird, but I'm new to the logging package and its use of properties. All the questions I can find by googling are "how to make logging open multiple files?" but my question today is how to make it stop doing multiple files simultaneously. Here we go... First things first: this project is restricted to using java.util.logging, no I can't switch to log4j or any other third-party package, yes I know they're supposed to be more awesome. :-) So when this applet starts up, it runs

问题 I need some direction in configuring the log format in Tomcat 7. I am relatively new at logging configurations so please excuse humor this questions if it seems a bit basic... Using the standard logging in Tomcat configured in logging.properties displays a log in the format of: Jun 6, 2011 9:27:00 AM com.class.Control_WS callWebService INFO: Response received from Control_WS:[Y] I would like to customize these logs to compress on to one line as well as expanding the date format to include

问题 According to the c3p0 documentation, you can manually specify where logs should go, whether through JDK 1.4 logging, Log4j, or through System.out. I'm running SLF4J, so I've included org.slf4j.jul-to-slf4j and call SLF4JBridgeHandler.install() in my application to force all Java util logging to go through SLF4J. Additionally, I've included the following property in my c3p0.properties file: com.mchange.v2.log.MLog = com.mchange.v2.log.jdk14logging.Jdk14MLog This, according to the documentation

问题 I redirected Java Logger to log in file using following code: Handler handler = new FileHandler("test.log", LOG_SIZE, LOG_ROTATION_COUNT); Logger.getLogger("").addHandler(handler); but it logs in XML format. I want to be exactly like output (i.e. plain text). How can I do that? 回答1: You need to set a Formatter on your Handler. Either create your own or use the SimpleFormatter 来源： https://stackoverflow.com/questions/10469157/java-log-in-plain-text

问题 I am trying to deserialize incoming PUT request with JSON request body using org.codehaus.jackson package and I am receiving error message The request sent by the client was syntactically incorrect . How can I get more detailed log/error messages in my Pivotal TC server logs, e.g. in catalina.log ? I have added the following line to logging.properties: org.codehaus.level = FINEST But NO messages from org.codehaus is displayed in my log, although the error message is displayed on web page.

问题 I am seeking confirmations on followings: Using Websphere Application Server Admin Console, we can specify some logging configurations and that shows classes of your application also (as shown below). If I enable logging in WAS console, will it work only if My Application (and other classes which are mentioned in there) have JUL implemented into it? By default the logging using WAS console is done in the trace file (${SERVER_LOG_ROOT}/trace.log). Can this be made to console also? (I think yes

问题 In the documentation of LogManager, the following is set of the Handlers property: A property "handlers". This defines a whitespace or comma separated list of class names for handler classes to load and register as handlers on the root Logger (the Logger named ""). A property ".handlers". This defines a whitespace or comma separated list of class names for handlers classes to load and register as handlers to the specified logger. Each class name must be for a Handler class which has a default

问题 I am creating a logger in java by executing the following code: private static final String logFile = "." + File.separator + "Log Files" + File.separator + "Log_" + Long.toString(System.currentTimeMillis()); private static Logger logger = Logger.getLogger("JCS_Logger"); static { try { logger.addHandler(new FileHandler(logFile )); } catch (Exception e) { System.err.println("Could not return a static logger"); } } If I use this logger, it writes to not only System.err, but also to the file.

问题 My Project is composed of multiple modules. Each module can run on its own and have a separate log4j2.xml Say Project X is composed of three modules: Module A has log4j2.xml (contains Loggers and Appenders) Module B has log4j2.xml Module C has log4j2.xml While integrating the modules, I have to manually copy-paste the Loggers and Appenders from each module's log4j2.xml into the project specific log4j2.xml file. To avoid copy-paste, I've looked for XInclude to include multiple files but it

问题 I'm compiling a PDF using iText and Flying Saucer, and unfortunately, I can't seem to get any output from Flying Saucer when compiling. I'd really like to be able to see what's going on internally so as to be able to debug the current problem I'm facing. How can I turn on java.util.logging for Flying Saucer? I'm currently using SLF4J/Logback. 回答1: Found it: System.getProperties().setProperty("xr.util-logging.loggingEnabled", "true"); XRLog.setLoggingEnabled(true); 来源： https://stackoverflow