?? rootlogger.java
字號(hào):
/* * Copyright 1999,2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.log4j.spi;import org.apache.log4j.*;import org.apache.log4j.helpers.LogLog;// Contibutors: Mathias Bogaert/** RootLogger sits at the top of the logger hierachy. It is a regular logger except that it provides several guarantees. <p>First, it cannot be assigned a <code>null</code> level. Second, since root logger cannot have a parent, the {@link #getChainedLevel} method always returns the value of the level field without walking the hierarchy. @author Ceki Gülcü */public final class RootLogger extends Logger { /** The root logger names itself as "root". However, the root logger cannot be retrieved by name. */ public RootLogger(Level level) { super("root"); setLevel(level); } /** Return the assigned level value without walking the logger hierarchy. */ public final Level getChainedLevel() { return level; } /** Setting a null value to the level of the root logger may have catastrophic results. We prevent this here. @since 0.8.3 */ public final void setLevel(Level level) { if (level == null) { LogLog.error( "You have tried to set a null level to root.", new Throwable()); } else { this.level = level; } }}
?? 快捷鍵說(shuō)明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -