spring-boot-starter-log4j集成
一、引入依赖
SpringBoot默认使用slf4j面板日志，所以只需要导入依赖包，它自动会找到实现类。
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| <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j</artifactId>
</dependency>
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二、配置
在resource下的application.properties中加入配置
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logging.config=classpath:log4j.xml
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log4j.xml文件，下面的配置是每10M分一个新文件。info类和error类日志分开
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| <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/xml/doc-files/log4j.dtd">
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/' >
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out" />
<param name="Threshold" value="DEBUG" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss sss}[%-p][%-c][line:%-L] \r\n %m%n" />
</layout>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="new a seq no spend" />
<param name="AcceptOnMatch" value="false" />
</filter>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="new hi[type=" />
<param name="AcceptOnMatch" value="false" />
</filter>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="FileTransfer.execCommand()" />
</filter>
</appender>
<appender name="InfoFileAppender" class="org.apache.log4j.RollingFileAppender">
<param name="Encoding" value="UTF-8" />
<param name="Append" value="true" />
<param name="Threshold" value="INFO" />
<param name="File" value="logs/info.log" />
<param name="MaxFileSize" value="10MB" />
<param name="MaxBackupIndex" value="15" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss sss}[%-p][%-c][line:%-L] \r\n %m%n" />
</layout>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="new a seq no spend" />
<param name="AcceptOnMatch" value="false" />
</filter>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="new hi[type=" />
<param name="AcceptOnMatch" value="false" />
</filter>
<filter class="org.apache.log4j.varia.StringMatchFilter">
<param name="StringToMatch" value="FileTransfer.execCommand()" />
<param name="AcceptOnMatch" value="false" />
</filter>
</appender>
<appender name="errorFileAppender" class="org.apache.log4j.RollingFileAppender">
<param name="Encoding" value="UTF-8" />
<param name="Append" value="true" />
<param name="Threshold" value="ERROR" />
<param name="File" value="logs/error.log" />
<param name="MaxFileSize" value="10MB" />
<param name="MaxBackupIndex" value="4" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss sss}[%-p][%-c][line:%-L] \r\n %m%n" />
</layout>
</appender>
<root>
<priority value="INFO" />
<appender-ref ref="CONSOLE" />
<appender-ref ref="InfoFileAppender" />
<appender-ref ref="errorFileAppender" />
</root>
</log4j:configuration>
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