2、自定義tomcat catalina.out日誌格式

一、需求

        默認catalina.out日誌中各字段分隔符是空格，由於日誌本身也可能輸出空格，所以可能導致根據空格進行日誌字段分割時，與實際結果不符。

        根據經驗，建議字段分隔符爲`，衝突的可能性會比空格小很多。

二、做法

        修改 ${tomcat-base}/conf/logging.properties中catalinaout日誌formatter爲 SimpleFormatter，再根據需求定義format。

        tomcat中SimpleFormatter源碼：

public class SimpleFormatter extends Formatter {
    //即定義此format格式，用於格式化輸出結果
    private static final String format = LoggingSupport.getSimpleFormat();
    private final Date dat = new Date();

    public synchronized String format(LogRecord record) {
        dat.setTime(record.getMillis());
        String source;
        if (record.getSourceClassName() != null) {
            source = record.getSourceClassName();
            if (record.getSourceMethodName() != null) {
               source += " " + record.getSourceMethodName();
            }
        } else {
            source = record.getLoggerName();
        }
        String message = formatMessage(record);
        String throwable = "";
        if (record.getThrown() != null) {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            pw.println();
            record.getThrown().printStackTrace(pw);
            pw.close();
            throwable = sw.toString();
        }
        return String.format(format,
                             dat,
                             source,
                             record.getLoggerName(),
                             record.getLevel().getLocalizedLevelName(),
                             message,
                             throwable);
    }
}

三、配置

        logging.properties配置如下：

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.

handlers = 1catalina.org.apache.juli.AsyncFileHandler, 2localhost.org.apache.juli.AsyncFileHandler, 3manager.org.apache.juli.AsyncFileHandler, 4host-manager.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler

.handlers = 1catalina.org.apache.juli.AsyncFileHandler, java.util.logging.ConsoleHandler

############################################################
# Handler specific properties.
# Describes specific configuration info for Handlers.
############################################################

1catalina.org.apache.juli.AsyncFileHandler.level = FINE
#1catalina.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.AsyncFileHandler.directory = ${tomcat.logs.dir}
1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina.
###################################################################################start
####添加下面兩行配置
1catalina.org.apache.juli.AsyncFileHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.SimpleFormatter.format = %1$tF %1$tT`%4$s`%3$s`%2$s`%5$s`%6$s%n
#####################################################################################end

2localhost.org.apache.juli.AsyncFileHandler.level = FINE
#2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.AsyncFileHandler.directory = ${tomcat.logs.dir}
2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.

3manager.org.apache.juli.AsyncFileHandler.level = FINE
#3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.AsyncFileHandler.directory = ${tomcat.logs.dir}
3manager.org.apache.juli.AsyncFileHandler.prefix = manager.

4host-manager.org.apache.juli.AsyncFileHandler.level = FINE
#4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
4host-manager.org.apache.juli.AsyncFileHandler.directory = ${tomcat.logs.dir}
4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.

java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter

############################################################
# Facility specific properties.
# Provides extra control for each logger.
############################################################

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 2localhost.org.apache.juli.AsyncFileHandler

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = 3manager.org.apache.juli.AsyncFileHandler

org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = 4host-manager.org.apache.juli.AsyncFileHandler

# For example, set the org.apache.catalina.util.LifecycleBase logger to log
# each component that extends LifecycleBase changing state:
#org.apache.catalina.util.LifecycleBase.level = FINE

# To see debug messages in TldLocationsCache, uncomment the following line:
#org.apache.jasper.compiler.TldLocationsCache.level = FINE

        日誌輸出結果如下：

        2016-06-20 16:55:47`INFO`org.apache.catalina.startup.HostConfig`org.apache.catalina.startup.HostConfig deployDirectory`Deployment of web application directory /usr/local/afg_tomcat/afg_10021/webapps/examples has finished in 495 ms`