java.util.logging

问题 I'd like to change the $CATALINA/conf/logging.properties file without stopping Tomcat 7 or any web application. The need is for exemple to change the level of detection, or to add a Handler on a suspect class. Is it also possible to do the same with $CATALINA_BASE/webapps/[myApp]/WEB-INF/classes/logging.properties file ? 回答1: If you set the reloadable attribute of Tomcat's Context element to false, the server will not require restart when it finds configuration changes while running. 来源：

问题 I have a Java 10 application on Windows Server 2016 which is continually writing to a file using java.util.logging. In Windows File Explorer, the "Last modified" and "Size" columns do not update. Pressing [F5] does not update the details. DOS DIR gives the same incorrect answer. Right Click > Properties > Details gives an even different (and older) answer. Only running DOS TYPE or opening/closing (without save) in Notepad on the file, seems to cause File Explorer and DOS DIR to update. I

问题 I would like to log in my application which consist of several classes. I would like to have one .txt log file at the end. Therefore I make one static logger instance and I made a FileHandler for it in one class. Because I would like to have one file, I set the second argument for true in the FileHandler to be able to append the log file during logging. public class MyLogging { static Logger logger; public Handler fileHandler; Formatter plainText; public MyLogging() throws IOException{ /

问题 I'm looking into hooking up a 3rd party Java application to our log aggregation/analysis solution (probably Splunk, we haven't finalized our selection yet though). It seems to be easiest to hook the Splunk agent to syslog, so I'm looking for a way to redirect the application logs to a local syslog daemon on the server. The Java application uses java.util.logging, which unfortunately does not feature a syslog handler out of the box (I believe log4j does, though). Are there any proven libraries

问题 I have an WebSphere Application Server which runs an WebApp. I start the Server from Eclipse. The main logging framework in that application is log4j2, but there are some third party libraries which use java.util.logging. I want to redirect those logs to log4j2 so it uses my filters, log format etc. Therefore I tried to add the Log4j JDK Logging Adapter. I added the necessary JAR (I lacked only log4j-jul as I already had the other log4j-jars for other purposes) to the Build Path and to the

问题 In a larger program, I am using a static java.util.logging.Logger instance, but redirecting System.err to several different files in succession. The Logger fails to log the second time I try to redirect System.err . Here's a test program to show the problem: import java.io.FileNotFoundException; import java.io.PrintStream; import java.util.logging.Logger; class TestRedirect { static final Logger logger = Logger.getLogger("test"); public static void main(String[] args) throws

问题 I'm working on a JSF-Project with Primefaces on Websphere Application Server. Since Primefaces uses java.util.logging, I'm using the jul-to-slf4j Bridge to capture the Primefacs Logs into my Log4J Logfile. But using the jul-to-slf4j Bridge, all java.util.logging Messages will be in my Logfile, including general Websphere Messages like "Application started" or "Server started". Can the jul-to-slf4j be configured, so it only redirects specific Messages (e.g. everything from org.primefaces ) to

问题 I am familiar with the java.util.logging (JUL) framework, I use it extensively. Recently, I started using a library that does its logging through log4j. When I start my application I now get the following printed on the console: log4j:WARN No appenders could be found for logger (com.example.thirdparty.Library). log4j:WARN Please initialize the log4j system properly. It appears that log4j has a solution for this: JULAppender which will send everything logged with log4j to the logging framework

问题 I tried to go through the tutorial on the Java logging API: www.vogella.com/articles/Logging/article.html But the generated files are empty (tested in Netbeans, Eclipse as well as running the jar from cmd). The log messages are displayed in the console only. The following are the files used in the project. What might be the reason for such behavior? Project: de.vogella.logger MyHtmlFormatter.java package de.vogella.logger; import java.text.SimpleDateFormat; import java.util.Date; import java

问题 I tried to go through the tutorial on the Java logging API: www.vogella.com/articles/Logging/article.html But the generated files are empty (tested in Netbeans, Eclipse as well as running the jar from cmd). The log messages are displayed in the console only. The following are the files used in the project. What might be the reason for such behavior? Project: de.vogella.logger MyHtmlFormatter.java package de.vogella.logger; import java.text.SimpleDateFormat; import java.util.Date; import java