log4j不同级别日志分不同文件记录

原文：http://www.javaeye.com/topic/744693

 

 

最近被问到一个log4j分不同文件记录不同级别日志的问题，一下给难倒了，以前没有留意过log4j的具体功能，只是了解了下。如今自己还差的远啊。╮(╯▽╰)╭。。。

参考了前段时间的那个项目中的log4j配置文件，发现那个只不过将不同模组的日志记录到不同的日志文件。并未按日志级别分文件记录。自己在动手调试的过程中结合查阅网上很多博文，终于以xml格式配置的方式调通。具体配置如下：

 

Xml代码

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">  
3. <log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>  
4.       
5.     <appender name="stdout" class="org.apache.log4j.ConsoleAppender">  
6.         <layout class="org.apache.log4j.PatternLayout">  
7.             <param name="ConversionPattern"  
8.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
9.         </layout>  
10.     </appender>  
11.       
12.     <appender name="traceLog4Debug" class="org.apache.log4j.RollingFileAppender">  
13.         <param name="File" value="C:/traceLog4Debug.log"/>  
14.         <param name="maxFileSize" value="2000KB"/>  
15.         <param name="maxBackupIndex" value="20"/>  
16.         <layout class="org.apache.log4j.PatternLayout">  
17.             <param name="ConversionPattern"  
18.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
19.         </layout>  
20.     </appender>  
21.       
22.     <appender name="debugLog" class="org.apache.log4j.RollingFileAppender">  
23.         <param name="File" value="C:/debug.log"/>  
24.         <param name="maxFileSize" value="2000KB"/>  
25.         <param name="maxBackupIndex" value="10"/>  
26.         <layout class="org.apache.log4j.PatternLayout">  
27.             <param name="ConversionPattern"  
28.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
29.         </layout>  
30.         <span style="color: rgb(255, 0, 0);"><!-- filter作用？  配置LevelMax与LevelMin限定输出到文件的日志级别 -->  
31.         <filter class="org.apache.log4j.varia.LevelRangeFilter">  
32.                         <param name="LevelMax" value="DEBUG" />  
33.                         <param name="LevelMin" value="DEBUG" />  
34.                 </filter></span>  
35.     </appender>  
36.       
37.     <appender name="infoLog" class="org.apache.log4j.RollingFileAppender">  
38.         <param name="File" value="C:/info.log"/>  
39.         <param name="maxFileSize" value="2000KB"/>  
40.         <param name="maxBackupIndex" value="10"/>  
41.         <layout class="org.apache.log4j.PatternLayout">  
42.             <param name="ConversionPattern"  
43.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
44.         </layout>  
45.         <filter class="org.apache.log4j.varia.LevelRangeFilter">  
46.                     <param name="LevelMax" value="INFO" />  
47.                     <param name="LevelMin" value="INFO" />  
48.             </filter>  
49.     </appender>  
50.       
51.     <appender name="warnLog" class="org.apache.log4j.RollingFileAppender">  
52.         <param name="File" value="C:/warn.log"/>  
53.         <param name="maxFileSize" value="2000KB"/>  
54.         <param name="maxBackupIndex" value="10"/>  
55.         <layout class="org.apache.log4j.PatternLayout">  
56.             <param name="ConversionPattern"  
57.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
58.         </layout>  
59.         <filter class="org.apache.log4j.varia.LevelRangeFilter">  
60.                     <param name="LevelMax" value="WARN" />  
61.                     <param name="LevelMin" value="WARN" />  
62.             </filter>  
63.     </appender>  
64.       
65.     <appender name="errorLog" class="org.apache.log4j.RollingFileAppender">  
66.         <param name="File" value="C:/error.log"/>  
67.         <param name="maxFileSize" value="2000KB"/>  
68.         <param name="maxBackupIndex" value="10"/>  
69.         <layout class="org.apache.log4j.PatternLayout">  
70.             <param name="ConversionPattern"  
71.                 value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/>  
72.         </layout>  
73.         <filter class="org.apache.log4j.varia.LevelRangeFilter">  
74.                     <param name="LevelMax" value="ERROR" />  
75.                     <param name="LevelMin" value="ERROR" />  
76.             </filter>  
77.     </appender>  
78.       
79.     <!-- 记录该包下所有日志 -->  
80.     <logger name="com.javaeye.paopaohou">  
81.         <level value="ALL"/>  
82.         <appender-ref ref="stdout"/>  
83.         <appender-ref ref="traceLog4Debug"/>  
84.         <appender-ref ref="debugLog"/>  
85.         <appender-ref ref="infoLog"/>  
86.         <appender-ref ref="warnLog"/>  
87.         <appender-ref ref="errorLog"/>  
88.     </logger>  
89.       
90.       
91.       
92.     <logger name="org.hibernate.SQL">  
93.         <level value="DEBUG"/>  
94.         <appender-ref ref="traceLog4Debug"/>  
95.         <appender-ref ref="stdout"/>  
96.     </logger>  
97.       
98.     <logger name="org.hibernate">  
99.         <level value="error"/>  
100.         <appender-ref ref="traceLog4Debug"/>  
101.         <appender-ref ref="stdout"/>  
102.     </logger>  
103.       
104.     <logger name="org.springframework">  
105.         <level value="error"/>  
106.         <appender-ref ref="traceLog4Debug"/>  
107.         <appender-ref ref="stdout"/>  
108.     </logger>  
109.   
110.       
111. </log4j:configuration>  

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"><log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'><appender name="stdout" class="org.apache.log4j.ConsoleAppender"><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout></appender><appender name="traceLog4Debug" class="org.apache.log4j.RollingFileAppender"><param name="File" value="C:/traceLog4Debug.log"/><param name="maxFileSize" value="2000KB"/><param name="maxBackupIndex" value="20"/><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout></appender><appender name="debugLog" class="org.apache.log4j.RollingFileAppender"><param name="File" value="C:/debug.log"/><param name="maxFileSize" value="2000KB"/><param name="maxBackupIndex" value="10"/><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout><!-- filter作用？  配置LevelMax与LevelMin限定输出到文件的日志级别 --><filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMax" value="DEBUG" />            <param name="LevelMin" value="DEBUG" />        </filter></appender><appender name="infoLog" class="org.apache.log4j.RollingFileAppender"><param name="File" value="C:/info.log"/><param name="maxFileSize" value="2000KB"/><param name="maxBackupIndex" value="10"/><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout><filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMax" value="INFO" />            <param name="LevelMin" value="INFO" />        </filter></appender><appender name="warnLog" class="org.apache.log4j.RollingFileAppender"><param name="File" value="C:/warn.log"/><param name="maxFileSize" value="2000KB"/><param name="maxBackupIndex" value="10"/><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout><filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMax" value="WARN" />            <param name="LevelMin" value="WARN" />        </filter></appender><appender name="errorLog" class="org.apache.log4j.RollingFileAppender"><param name="File" value="C:/error.log"/><param name="maxFileSize" value="2000KB"/><param name="maxBackupIndex" value="10"/><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern"value="%d{yyyy/MM/dd HH:mm:ss.sss} [%-5p] %c - %m%n"/></layout><filter class="org.apache.log4j.varia.LevelRangeFilter">            <param name="LevelMax" value="ERROR" />            <param name="LevelMin" value="ERROR" />        </filter></appender><!-- 记录该包下所有日志 --><logger name="com.javaeye.paopaohou"><level value="ALL"/><appender-ref ref="stdout"/><appender-ref ref="traceLog4Debug"/><appender-ref ref="debugLog"/><appender-ref ref="infoLog"/><appender-ref ref="warnLog"/><appender-ref ref="errorLog"/></logger><logger name="org.hibernate.SQL"><level value="DEBUG"/><appender-ref ref="traceLog4Debug"/><appender-ref ref="stdout"/></logger><logger name="org.hibernate"><level value="error"/><appender-ref ref="traceLog4Debug"/><appender-ref ref="stdout"/></logger><logger name="org.springframework"><level value="error"/><appender-ref ref="traceLog4Debug"/><appender-ref ref="stdout"/></logger></log4j:configuration>

 

 只不过是在配置appender的时候配置了一个LevelRangeFilter的filter，并配置LevelMax与LevelMin(最大最小级别)，加个测试类：

 

Java代码

1. package com.javaeye.paopaohou;  
2.   
3. import org.apache.log4j.Logger;  
4.   
5. public class TestLog4j {  
6.   
7.     private static final Logger log = Logger.getLogger(TestLog4j.class);  
8.     /** 
9.      * 测试log4j不同级别日志分文件记录 
10.      * 
11.      */  
12.   
13.     public static void main(String[] args) {  
14.         log.debug("debug...");  
15.         log.info("info...");  
16.         log.warn("warn...");  
17.         log.error("error...");  
18.   
19.     }  
20.   
21. }  

package com.javaeye.paopaohou;import org.apache.log4j.Logger;public class TestLog4j {private static final Logger log = Logger.getLogger(TestLog4j.class);/** * 测试log4j不同级别日志分文件记录 * */public static void main(String[] args) {log.debug("debug...");log.info("info...");log.warn("warn...");log.error("error...");}}

 这样就可以将不同级别的日志记录到不同的文件，可惜使用properties格式的log4j配置文件却没有调通。是因为properties格式的文件不支持这么配置吗？不知道哪位在使用properties文件时候这么做过，还有我发现我经历的项目都使用xml格式的配置文件好像多于properties格式的文件，是因为xml格式配置起来更灵活吗？学习。。。

 

 

log4j.rootLogger=INFO,console,info,warn,error,fatal

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.Encoding=GBK
log4j.appender.console.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n

log4j.logger.info=info
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold=INFO
log4j.appender.info.append=true
log4j.appender.info.Encoding=GBK
log4j.appender.info.File=D:/log/bpsoft_info.log

#log4j.logger.debug=debug
#log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
#log4j.appender.debug.layout=org.apache.log4j.PatternLayout
#log4j.appender.debug.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
#log4j.appender.debug.datePattern='.'yyyy-MM-dd
#log4j.appender.debug.Threshold=DEBUG
#log4j.appender.debug.append=true
#log4j.appender.debug.Encoding=GBK
#log4j.appender.debug.File=D:/log/bpsoft_debug.log

log4j.logger.warn=warn
log4j.appender.warn=org.apache.log4j.DailyRollingFileAppender
log4j.appender.warn.layout=org.apache.log4j.PatternLayout
log4j.appender.warn.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.warn.datePattern='.'yyyy-MM-dd
log4j.appender.warn.Threshold=WARN
log4j.appender.warn.append=true
log4j.appender.warn.Encoding=GBK
log4j.appender.warn.File=D/:/log/bpsoft_warn.log

log4j.logger.error=error
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.error.datePattern='.'yyyy-MM-dd
log4j.appender.error.Threshold=ERROR
log4j.appender.error.append=true
log4j.appender.error.Encoding=GBK
log4j.appender.error.File=D/:/log/bpsoft_error.log

log4j.logger.fatal=fatal
log4j.appender.fatal=org.apache.log4j.DailyRollingFileAppender
log4j.appender.fatal.layout=org.apache.log4j.PatternLayout
log4j.appender.fatal.layout.ConversionPattern=[%p]  [%d{yyyy-MM-dd HH/:mm/:ss}]  [ Class /= %C | Method /= %M | Line /= %L ] | %m |%n
log4j.appender.fatal.datePattern='.'yyyy-MM-dd
log4j.appender.fatal.Threshold=FATAL
log4j.appender.fatal.append=true
log4j.appender.fatal.Encoding=GBK
log4j.appender.fatal.File=D:/log/bpsoft_fatal.log

 

 

 

log4j.rootLogger=INFO,console,info,warn,error,fatal

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.Encoding=GBK
log4j.appender.console.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n

log4j.logger.info=info
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.info.datePattern='.'yyyy-MM-dd
log4j.appender.info.Threshold=INFO
log4j.appender.info.append=true
log4j.appender.info.Encoding=GBK
log4j.appender.info.File=${loghome}//log/bpsoft_info.log

#log4j.logger.debug=debug
#log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
#log4j.appender.debug.layout=org.apache.log4j.PatternLayout
#log4j.appender.debug.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
#log4j.appender.debug.datePattern='.'yyyy-MM-dd
#log4j.appender.debug.Threshold=DEBUG
#log4j.appender.debug.append=true
#log4j.appender.debug.Encoding=GBK
#log4j.appender.debug.File=${loghome}/log/bpsoft_debug.log

log4j.logger.warn=warn
log4j.appender.warn=org.apache.log4j.DailyRollingFileAppender
log4j.appender.warn.layout=org.apache.log4j.PatternLayout
log4j.appender.warn.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.warn.datePattern='.'yyyy-MM-dd
log4j.appender.warn.Threshold=WARN
log4j.appender.warn.append=true
log4j.appender.warn.Encoding=GBK
log4j.appender.warn.File=${loghome}/log/bpsoft_warn.log

log4j.logger.error=error
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=[%p] [%d{yyyy-MM-dd HH:mm:ss}]  [ Class = %C | Method = %M | Line = %L ] | %m |%n
log4j.appender.error.datePattern='.'yyyy-MM-dd
log4j.appender.error.Threshold=ERROR
log4j.appender.error.append=true
log4j.appender.error.Encoding=GBK
log4j.appender.error.File=${loghome}/log/bpsoft_error.log

log4j.logger.fatal=fatal
log4j.appender.fatal=org.apache.log4j.DailyRollingFileAppender
log4j.appender.fatal.layout=org.apache.log4j.PatternLayout
log4j.appender.fatal.layout.ConversionPattern=[%p]  [%d{yyyy-MM-dd HH/:mm/:ss}]  [ Class /= %C | Method /= %M | Line /= %L ] | %m |%n
log4j.appender.fatal.datePattern='.'yyyy-MM-dd
log4j.appender.fatal.Threshold=FATAL
log4j.appender.fatal.append=true
log4j.appender.fatal.Encoding=GBK
log4j.appender.fatal.File=${loghome}/log/bpsoft_fatal.log
#The log output to the directory
loghome=d:/
 



//=====================工具类
public final class LogUtil {

private final static String LOGHOME="loghome";

static{
try{
Propertiesprop=ConfigUtil.getResource("log4j.properties");
PropertyConfigurator.configure(prop);
String loghome=prop.getProperty(LOGHOME);
if(StringUtil.isValidateString(loghome)){
System.setProperty(LOGHOME, StringUtil.checkString(loghome));
}
}catch(Exception e){
e.printStackTrace();
}
}
/**日志对象实例*/
private static Logger  instance=null;

/**获得当前对象实例静态方法*/
public static Logger getDefaultInstance(){
if(instance==null){
synchronized(LogUtil.class){
if(instance==null){//如果没有这个判断，当两个线程同时访问这个方法会出现创建两个对象
instance=Logger.getLogger("LOGGER");
    }
}
}
return instance;
}
/**
* 依据不同类的Class对象创建不同的Logger类对象
* @param clazz
* @return
*/
@SuppressWarnings("unchecked")
public static Logger getInstance(Class clazz){
if(clazz==null){
return null;
}
return Logger.getLogger(clazz);
}
/**
* 依据累的全名来创建Logger类对象
* @param className
* @return
*/
public static Logger getInstance(String className){
if(className==null){
return null;
}
return Logger.getLogger(className);
}

}