Log4j在开发环境和工作环境中的使用

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一：工作环境仅打印异常信息到log日志文件中

1.1 log4j.properties(设置日志级别为error)

log4j.rootLogger=ERROR, stdout,file# Console output...log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n#打印异常log到本地文件中log4j.appender.file = org.apache.log4j.DailyRollingFileAppenderlog4j.appender.file.File =C\://logs/error.loglog4j.appender.file.Append = truelog4j.appender.file.Threshold = ERRORlog4j.appender.file.layout = org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern =%-d{yyyy-MM-dd HH\:mm\:ss}  [ %t\:%r ] - [ %p ]

1.2 CODE

 public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {        logger = Logger.getLogger(MyExceptionResolver.class);        logger.error("错误：",ex);

1.3 RESULT

二：开发环境下配置，此时不需要打印信息到日志文件中，仅配置log4j.properties如下：

log4j.rootLogger=DEBUG, stdout# Console output...log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

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