我想将日志存储在2个不同的文件中。一方面,我的日志不会写入文件,但会创建文件,另一方面,控制台中只显示“错误”和“致命”级别。属性文件:
name=PropertiesConfig
property.filename = logs
appenders = console, user, system
appender.console.type = Console
appender.console.name = STDOUT
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = [%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
appender.user.type = File
appender.user.name = LOGFILE
appender.user.fileName=${filename}/user.log
appender.user.layout.type=PatternLayout
appender.user.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] c{1} - %msg%n
appender.user.MaxFileSize=5120KB
appender.user.MaxBackupIndex=10
appender.system.type = File
appender.system.name = LOGFILE
appender.system.fileName=${filename}/system.log
appender.system.layout.type=PatternLayout
appender.system.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] c{1} - %msg%n
appender.system.MaxFileSize=5120KB
appender.system.MaxBackupIndex=10
Loggers = file
logger.file.name = de.pares.int_plan
logger.file.level = All
logger.file.appenderRefs = file
logger.file.appenderRef.file.ref = LOGFILE
这是我创建记录器的方法:
private static Logger userLog = LogManager.getLogger("user");
private static Logger systemLog = LogManager.getLogger("system");
使用这样的:
userLog.debug("UserLogger: This is a debug message");
userLog.info("UserLogger: This is an info message");
userLog.warn("UserLogger: This is a warn message");
userLog.error("UserLogger: This is an error message");
userLog.fatal("UserLogger: This is a fatal message");
systemLog.debug("SystemLogger: This is a debug message");
systemLog.info("SystemLogger: This is an info message");
systemLog.warn("SystemLogger: This is a warn message");
systemLog.error("SystemLogger: This is an error message");
systemLog.fatal("SystemLogger: This is a fatal message");
我做错了什么?
您定义的属性存在几个问题。我将尝试逐一解释每一个。但是,您应该参考log4j2 manual regarding properties configuration并使用自己的research查找使用log4j2属性的示例或有关log4j2属性的其他问题,以便在遇到问题时将此信息包含在您的问题中。
您说控制台上只显示错误和致命级别。这是因为您尚未定义根记录器。作为log4j2手册states:
每个配置都必须有一个根记录器。如果未配置,则将使用默认根LoggerConfig,其级别为ERROR且附加了Console appender。
由于additivity默认是true
而您尚未禁用它,因此所有日志事件都将被发送到默认的根记录器,如上所述。结果是,只有那些错误或致命的事件才会记录到控制台,因为默认的根记录器的级别是ERROR
现在,关于您的属性配置,这里是问题:
appender.user.MaxFileSize=5120KB
appender.user.MaxBackupIndex=10
也许你想要一个滚动文件appender而不是?你的问题并不是很清楚,所以我通过在每行的前面添加'#'来评论这些。appenders = console, user, system
Loggers = file
你没有指定你正在使用哪个版本,所以我假设你正在使用最新版本,在这种情况下不需要这些行。我也对这些内容进行了评论。logger.file.name = de.pares.int_plan
但是de.pares.int_plan
不是你在java代码中用来获取记录器的名字之一。你使用过user
和system
。我在属性中更正了这些(请参阅答案后面的完整属性)。c{1}
之前的'%'。logger.file.appenderRefs = file
中的示例,您在记录器定义log4j2 manual中有一个额外的行似乎不是必需的。将所有这些更正放在一起我得到了以下属性:
name=PropertiesConfig
property.filename = logs
#Removed the following line since latest log4j2 does not need it
#appenders = console, user, system
appender.console.type = Console
appender.console.name = STDOUT
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = [%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
appender.user.type = File
appender.user.name = userLog
appender.user.fileName=${filename}/user.log
appender.user.layout.type=PatternLayout
appender.user.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
#Removed attributes that do not apply to file appender
#appender.user.MaxFileSize=5120KB
#appender.user.MaxBackupIndex=10
appender.system.type = File
appender.system.name = systemLog
appender.system.fileName=${filename}/system.log
appender.system.layout.type=PatternLayout
appender.system.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n
#Removed attributes that do not apply to file appender
#appender.system.MaxFileSize=5120KB
#appender.system.MaxBackupIndex=10
#Removed the following line since latest log4j2 does not need it
#Loggers = file
logger.userFile.name = user
logger.userFile.level = All
logger.userFile.appenderRef.user.ref = userLog
logger.systemFile.name = system
logger.systemFile.level = All
logger.systemFile.appenderRef.system.ref = systemLog
#Adding the following commented lines for reference - this is how you define the root logger in the properties.
#rootLogger.level = info
#rootLogger.appenderRef.console.ref = STDOUT
为了测试这个配置,我使用了以下代码:
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
public class SomeClass {
private static Logger userLog = LogManager.getLogger("user");
private static Logger systemLog = LogManager.getLogger("system");
public static void main(String[] args){
systemLog.debug("This is the top of main method");
if(userLog.isDebugEnabled())
userLog.debug("This is some debug!");
userLog.info("Here's some info!");
userLog.error("Some error happened!");
systemLog.info("This is the end of main method");
systemLog.error("woops an error occurred");
}
}
结果是两个日志文件:
SYSTEM.LOG
[DEBUG] 2019-02-16 18:04:04.980 [main] system - This is the top of main method
[INFO ] 2019-02-16 18:04:04.980 [main] system - This is the end of main method
[ERROR] 2019-02-16 18:04:04.980 [main] system - woops an error occurred
USER.LOG
[DEBUG] 2019-02-16 18:04:04.980 [main] user - This is some debug!
[INFO ] 2019-02-16 18:04:04.980 [main] user - Here's some info!
[ERROR] 2019-02-16 18:04:04.980 [main] user - Some error happened!
和控制台输出:
[DEBUG] 2019-02-16 18:04:04.980 [main] system - This is the top of main method
[DEBUG] 2019-02-16 18:04:04.980 [main] user - This is some debug!
[INFO ] 2019-02-16 18:04:04.980 [main] user - Here's some info!
[ERROR] 2019-02-16 18:04:04.980 [main] user - Some error happened!
[INFO ] 2019-02-16 18:04:04.980 [main] system - This is the end of main method
[ERROR] 2019-02-16 18:04:04.980 [main] system - woops an error occurred
要完全了解控制台输出,请参阅log4j2手册 - 标题为Additivity的部分。
希望这可以帮助!
看到几件事只是一个粗略的传球。我将使用#
评论在线散布评论
appender.user.type = File
appender.user.name = LOGFILE
# ^^^^^^^ This must be distinct - it conflicts with appender.system
appender.user.fileName=${filename}/user.log
appender.user.layout.type=PatternLayout
appender.user.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] c{1} - %msg%n
# missing % here ^^^^
appender.user.MaxFileSize=5120KB
appender.user.MaxBackupIndex=10
appender.system.type = File
appender.system.name = LOGFILE
# ^^^^^^^ This must be distinct - it conflicts with appender.user
appender.system.fileName=${filename}/system.log
appender.system.layout.type=PatternLayout
appender.system.layout.pattern=[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] c{1} - %msg%n
# missing % here ^^^^
appender.system.MaxFileSize=5120KB
appender.system.MaxBackupIndex=10