log4j的日志级别的调整

public class Log4jConfiguration {

Logger logger = LoggerFactory.getLogger(Log4jConfiguration.class);

@PostConstruct
     public void initLog4jLevel(){

String logLevel=System.getProperty("log4j.level");
         if(logLevel==null){
             logLevel="";
         }

if(logLevel.length()>0 && Level.toLevel(logLevel) != null){ 
LogManager.getRootLogger().setLevel(Level.toLevel(logLevel));
             logger.info("Reset rootLogger log4j log level:"+logLevel);
             if(LogManager.getLogger("com.jje") != null){
                 logger.info("Reset com.jje log4j log level:"+logLevel); 
LogManager.getLogger("com.jje").setLevel(Level.toLevel(logLevel));
             }
             if(LogManager.getLogger("java.sql") != null){
                 logger.info("Reset java.sql log4j log level:"+logLevel); 
LogManager.getLogger("java.sql").setLevel(Level.toLevel(logLevel));
             }
             if(LogManager.getLogger("org.apache.ibatis") != null){
                 logger.info("Reset org.apache.ibatis log4j log level:"+logLevel); 
LogManager.getLogger("org.apache.ibatis").setLevel(Level.toLevel(logLevel));
             }

}
     }
}

具体的log4j的用法，请参考：http://logging.apache.org/.

以上用法仅供参考。谢谢。

注意：System方法读取的是jvm中参数

log4j.level设置时可在应用服务器（中间件）指定，通过-Dlog4j.level=INFO，具体内容可查阅相关资料，例如：java -opt;jvm -D