springboot_log4

1.過濾掉自帶的spring-boot-starter-logging：

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter</artifactId>
	<exclusions>
		<exclusion>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-logging</artifactId> 				
		</exclusion>
	</exclusions>
</dependency>

2.添加spring-boot-starter-log4j依賴：

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-log4j</artifactId>
	<version>1.3.8.RELEASE</version>
</dependency>

3.獲得logger實例：

Logger log = Logger.getLogger(this.getClass());

4.添加log4j配置文件：

log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<!-- Note that this file is refreshed by the server every 60seconds, as specified in web.xml -->

<log4j:configuration debug="true">

        <appender name="ROLL" class="org.apache.log4j.rolling.RollingFileAppender">
                <!-- The active file to log to -->
                <param name="file" value="/applogs/myportal/portal.log" />
                <param name="append" value="true" />
                <param name="encoding" value="UTF-8" />

                <rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
                        <!-- The file to roll to, this is a fairly intelligent parameter, if the file
                        ends in .gz, it gzips it, based on the date stamp it rolls at that time, 
                        default is yyyy-MM-dd, (rolls at midnight)
                        See: http://logging.apache.org/log4j/companions/extras/apidocs/org/apache/log4j/rolling/TimeBasedRollingPolicy.html -->
                        <param name="FileNamePattern" value="/applogs/myportal/portal.%d.log.gz" />
                </rollingPolicy>

                <layout class="org.apache.log4j.PatternLayout">
                        <!-- The log message pattern -->
                        <param name="ConversionPattern" value="%5p %d{ISO8601} [%t][%x] %c - %m%n" />
                </layout>
        </appender>
        
        <!-- Loggers to filter out various class paths -->

        <logger name="org.hibernate.engine.loading.LoadContexts" additivity="false">
                <level value="error"/>
                <appender-ref ref="ROLL" />
        </logger>
        
        <!-- Debugging loggers -->
        
        <!-- Uncomment to enable debug on calpoly code only -->
        <!--
        <logger name="edu.calpoly">
                <level value="debug"/>
                <appender-ref ref="ROLL" />
        </logger>
        -->
        
        <root>
                <priority value="info" />
                <appender-ref ref="ROLL" />
        </root>
        
</log4j:configuration>