log4j默認是沒法顯示log被調用位置的方法,改造如下
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
/**
* @program:
* @description: log4j in my project
* @author:
* @create: 2019-04-10 18:07
**/
public class GlobalLogger {
private static Logger logger = LogManager.getLogger(GlobalLogger.class);
public static void Log_Info(String s) {
StackTraceElement[] lvStacks = Thread.currentThread().getStackTrace();
logger.info("#[Class: " + lvStacks[2].getClassName() + "]; #[Function: " +
lvStacks[2].getMethodName() + "]; #[Line: " + lvStacks[2].getLineNumber() + "];\n" + s);
}
}
使用Thread.currentThread().getStackTrace()
可以獲得堆棧的追蹤信息,進而得到上一級調用的信息。
將上一級調用的類,方法打印出來,可以更方便地定位日誌代碼執行位置
配置文件
在idea中,在src/java/resources
中寫一個log4j.xml,內容如下
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration debug="true" xmlns:log4j='http://jakarta.apache.org/log4j/'>
<!-- ========================== 自定義輸出格式說明================================ -->
<!-- %p 輸出優先級,即DEBUG,INFO,WARN,ERROR,FATAL -->
<!-- %r 輸出自應用啓動到輸出該log信息耗費的毫秒數 -->
<!-- %c 輸出所屬的類目,通常就是所在類的全名 -->
<!-- %t 輸出產生該日誌事件的線程名 -->
<!-- %n 輸出一個回車換行符,Windows平臺爲“/r/n”,Unix平臺爲“/n” -->
<!-- %d 輸出日誌時間點的日期或時間,默認格式爲ISO8601,也可以在其後指定格式,比如:%d{yyy MMM dd HH:mm:ss,SSS},輸出類似:2002年10月18日 22:10:28,921 -->
<!-- %l 輸出日誌事件的發生位置,包括類目名、發生的線程,以及在代碼中的行數。舉例:Testlo4.main(TestLog4.java:10) -->
<!-- ========================================================================== -->
<!-- ========================== 輸出方式說明================================ -->
<!-- Log4j提供的appender有以下幾種: -->
<!-- org.apache.log4j.ConsoleAppender(控制檯), -->
<!-- org.apache.log4j.FileAppender(文件), -->
<!-- org.apache.log4j.DailyRollingFileAppender(每天產生一個日誌文件), -->
<!-- org.apache.log4j.RollingFileAppender(文件大小到達指定尺寸的時候產生一個新的文件), -->
<!-- org.apache.log4j.WriterAppender(將日誌信息以流格式發送到任意指定的地方) -->
<!-- ========================================================================== -->
<!--輸出到控制檯-->
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<!--<param name="Target" value="System.out"/>-->
<param name="Threshold" value="ALL"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss a} [Thread: %t]%n%p:%m%n"/>
</layout>
<!-- <filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="DEBUG"/>
<param name="LevelMax" value="DEBUG"/>
</filter> -->
</appender>
<!-- output the debug -->
<!-- <appender name="log4jDebug" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="log_"/>
<param name="MaxFileSize" value="KB"/>
<param name="MaxBackupIndex" value="2"/> -->
<appender name="log4jDebug" class="org.apache.log4j.rolling.RollingFileAppender">
<param name="Append" value="true"/>
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern" value="${Project}/log/log_%d{yyyy-MM-dd}.log"/>
</rollingPolicy>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss a} [Thread: %t][ Class:%c Method: %l ]%n%p:%m%n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="DEBUG"/>
<param name="LevelMax" value="DEBUG"/>
</filter>
</appender>
<!-- <appender name="log4jInfo" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="log_"/>
<param name="DatePattern" value="'.log'yyyy-MM-dd"/>
<param name="Append" value="true"/>
<param name="MaxFileSize" value="5KB"/>
<param name="MaxBackupIndex" value="2"/> -->
<appender name="log4jInfo" class="org.apache.log4j.rolling.RollingFileAppender">
<param name="Append" value="true"/>
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern" value="./log/log_%d{yyyy-MM-dd}.log"/>
</rollingPolicy>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss a} [Thread: %t]%n%p:%m%n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<param name="LevelMax" value="INFO"/>
</filter>
</appender>
<!-- <appender name="log4jWarn" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="/log_"/>
<param name="DatePattern" value="'.log'yyyy-MM-dd"/>
<param name="Append" value="true"/>
<param name="MaxFileSize" value="5KB"/>
<param name="MaxBackupIndex" value="2"/> -->
<appender name="log4jWarn" class="org.apache.log4j.rolling.RollingFileAppender">
<param name="Append" value="true"/>
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern" value="./log/log_%d{yyyy-MM-dd}.log"/>
</rollingPolicy>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss a} [Thread: %t]%n%p:%m%n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="WARN"/>
<param name="LevelMax" value="WARN"/>
</filter>
</appender>
<!-- <appender name="log4jError" class="org.apache.log4j.DailyRollingFileAppender"> -->
<appender name="log4jError" class="org.apache.log4j.rolling.RollingFileAppender">
<!-- <param name="File" value="/error_"/>
<param name="DatePattern" value="'.log'yyyy-MM-dd"/> -->
<param name="Append" value="true"/>
<rollingPolicy class="org.apache.log4j.rolling.TimeBasedRollingPolicy">
<param name="FileNamePattern" value="./log/error_%d{yyyy-MM-dd}.log"/>
</rollingPolicy>
<!-- <param name="MaxFileSize" value="5KB"/> -->
<!-- <param name="MaxBackupIndex" value="2"/> -->
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss a} [Thread: %t]%n%p:%m%n"/>
</layout>
<filter class="org.apache.log4j.varia.LevelRangeFilter">
<param name="LevelMin" value="ERROR"/>
<param name="LevelMax" value="ERROR"/>
</filter>
</appender>
<!--通過<category></category>的定義可以將各個包中的類日誌輸出到不同的日誌文件中-->
<!-- <category name="com.gzy">
<priority value="debug" />
<appender-ref ref="log4jTestLogInfo" />
<appender-ref ref="log4jTestDebug" />
</category> -->
<appender name="MAIL"
class="org.apache.log4j.net.SMTPAppender">
<param name="threshold" value="debug"/>
<!-- 日誌的錯誤級別
<param name="threshold" value="error"/>
-->
</appender>
<root>
<priority value="debug"/>
<appender-ref ref="CONSOLE"/>
<!-- <appender-ref ref="log4jDebug"/>-->
<!-- <appender-ref ref="log4jInfo"/>-->
<!-- <appender-ref ref="log4jWarn"/>-->
<!-- <appender-ref ref="log4jError"/>-->
<!-- <appender-ref ref="MAIL" /> -->
</root>
</log4j:configuration>
已經略加修改
參考於 https://blog.csdn.net/kakolukiya/article/details/50158783