日志界别动态调整2
package ***.cbb.log;import org.apache.log4j.Level;import org.apache.log4j.Logger;import org.apache.log4j.spi.LoggerRepository;/** * 日志级别修改类，可以不停机（tomcat不需要重启）实现对日志记录级别的修改， * 并即时生效。 * @author jianfeng.lu * */public final class LogLevelChanger{ private static final Logger logger = Logger.getLogger(LogLevelChanger.class); private static LogLevelChanger instance; public static synchronized LogLevelChanger getInstance() { if (null == instance) instance = new LogLevelChanger(); return instance; } public boolean changeLogLevel(String paramString) { if ((null == paramString) || ("".equals(paramString.trim()))) { logger.warn("[amulog] changeLogLevel() strLevel is empty"); return false; } if ("Debug".equalsIgnoreCase(paramString)) { logger.getLoggerRepository().getRootLogger().setLevel(Level.DEBUG); return true; } if ("Info".equalsIgnoreCase(paramString)) { logger.getLoggerRepository().getRootLogger().setLevel(Level.INFO); return true; } if ("Warn".equalsIgnoreCase(paramString)) { logger.getLoggerRepository().getRootLogger().setLevel(Level.WARN); return true; } if ("Error".equalsIgnoreCase(paramString)) { logger.getLoggerRepository().getRootLogger().setLevel(Level.ERROR); return true; } if ("DEFAULT".equalsIgnoreCase(paramString)) { logger.getLoggerRepository().getRootLogger().setLevel(getDefaultLogLevel()); return true; } logger.debug("[amulog] changeLogLevel() exit"); return false; } private Level getDefaultLogLevel() { logger.debug("[amulog] getDefaultLogLevel() enter."); Level localLevel = null; String str = LogMgrHelper.getInstance().getDefaultLogLevel(); if ("error".equalsIgnoreCase(str)) localLevel = Level.ERROR; else if ("warn".equalsIgnoreCase(str)) localLevel = Level.WARN; else if ("info".equalsIgnoreCase(str)) localLevel = Level.INFO; else if ("debug".equalsIgnoreCase(str)) localLevel = Level.DEBUG; else localLevel = Level.ERROR; logger.debug("[amulog] getDefaultLogLevel() leave."); return localLevel; } public String getLogLevel() { String str = logger.getLoggerRepository().getRootLogger().getLevel().toString(); if ("Debug".equalsIgnoreCase(str)) str = "Debug"; if ("Info".equalsIgnoreCase(str)) str = "Info"; if ("Warn".equalsIgnoreCase(str)) str = "Warn"; if ("Error".equalsIgnoreCase(str)) str = "Error"; return str; }}