本博客介绍log4j的日志管理配置

log4j.peroperties:
在D盘创建一个logs的文件夹来存放日志

set log levels

log4j.rootLogger = info , Console , D

Console

log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=INFO
log4j.logger.java.sql.Statement=INFO
log4j.logger.java.sql.PreparedStatement=INFO

output2file

log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = D:/logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = INFO ## \u8F93\u51FAinfo\u7EA7\u522B\u4EE5\u4E0A\u7684\u65E5\u5FD7
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

写个日志管理类：

package com.appweb.core.logger;

public class Logger {

private org.apache.log4j.Logger logger;  

  
/** 
 * 构造方法，初始化Log4j的日志对象 
 */  
private Logger(org.apache.log4j.Logger log4jLogger) {  
    logger = log4jLogger;  
}  

/** 
 * 获取构造器，根据类初始化Logger对象 
 *  
 * @param Class 
 *            Class对象 
 * @return Logger对象 
 */  
public static Logger getLogger(Class classObject) {  
    return new Logger(org.apache.log4j.Logger.getLogger(classObject));  
}  

/** 
 * 获取构造器，根据类名初始化Logger对象 
 *  
 * @param String 
 *            类名字符串 
 * @return Logger对象 
 */  
public static Logger getLogger(String loggerName) {  
    return new Logger(org.apache.log4j.Logger.getLogger(loggerName));  
}  

public void debug(Object object) {  
    logger.debug(object);  
}  

public void debug(Object object, Throwable e) {  
    logger.debug(object, e);  
}  

public void info(Object object) {  
    logger.info(object);  
}  

public void info(Object object, Throwable e) {  
    logger.info(object, e);  
}  

public void warn(Object object) {  
    logger.warn(object);  
}  

public void warn(Object object, Throwable e) {  
    logger.warn(object, e);  
}  

public void error(Object object) {  
    logger.error(object);  
}  

public void error(Object object, Throwable e) {  
    logger.error(object, e);  
}  

public void fatal(Object object) {  
    logger.fatal(object);  
}  

public String getName() {  
    return logger.getName();  
}  

public org.apache.log4j.Logger getLog4jLogger() {  
    return logger;  
}  

public boolean equals(Logger newLogger) {  
    return logger.equals(newLogger.getLog4jLogger());  
}

}

可以写个BaseController的控制类
然后将log的管理类加进来，实现日志管理的重复使用

package com.appweb.core.base;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.ModelAndView;

import com.appweb.core.entity.Page;
import com.appweb.core.entity.PageData;
import com.appweb.core.logger.Logger;
import com.appweb.core.utils.UuidUtil;

public class BaseController {

protected Logger logger = Logger.getLogger(this.getClass());  

private static final long serialVersionUID = 6357869213649815390L;  
  

  
/** 
 * 得到分页列表的信息  
 */  
  
  
public static void logBefore(Logger logger, String interfaceName){  
    logger.info("");  
    logger.info("start");  
    logger.info(interfaceName);  
}  
  
public static void logAfter(Logger logger){  
    logger.info("end");  
    logger.info("");  
}

}

然后每个控制类都extends这个BaseController，使用日志的时候叫调用logger日志管理类