动态配置log4j

来源：互联网发布：中国食品安全知乎编辑：程序博客网时间：2024/04/28 13:09
<%@ page import="org.apache.log4j.*" %><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><html><head><title>Dynamic Log4J Control</title></head><body><h1>Dynamic Log4J Control</h1><%  String logName=request.getParameter("log");if (null!=logName) {Logger log=("".equals(logName) ?Logger.getRootLogger() : Logger.getLogger(logName));log.setLevel(Level.toLevel(request.getParameter("level"),Level.DEBUG));}%><c:set var="rootLogger" value="<%= Logger.getRootLogger() %>"/><form><table border="1"><tr><th>Level</th><th>Logger</th><th>Set New Level</th></tr><tr><td>${rootLogger.level}</td><td>${rootLogger.name}</td><td><c:forTokens var="level" delims="," items="DEBUG,INFO,WARN,ERROR,OFF"><a href="log4j.jsp?log=&level=${level}">${level}</a></c:forTokens></td></tr><c:forEach var="logger" items="${rootLogger.loggerRepository.currentLoggers}"><c:if test="${!empty logger.level.syslogEquivalent || param.showAll}"><tr><td>${logger.level}</td><td>${logger.name}</td><td><c:forTokens var="level" delims="," items="DEBUG,INFO,WARN,ERROR,OFF"><a href="log4j.jsp?log=${logger.name}&level=${level}">${level}</a></c:forTokens></td></tr></c:if></c:forEach><tr><td></td><td><input type="text" name="log"/></td><td><select name="level"><c:forTokens var="level" delims="," items="DEBUG,INFO,WARN,ERROR,OFF"><option>${level}</option></c:forTokens></select> <input type="submit" value="Add New Logger"/></td></tr></table></form>Show <a href="log4j.jsp?showAll=true">all known loggers</a></body></html>
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