Java 基于log4j的日志工具类
对log4j日志类进行了简单封装，使用该封装类的优势在于以下两点：
1、不必在每个类中去创建对象，直接类名 + 方法即可
2、可以很方便的打印出堆栈信息
package com.tradeplatform.receiveorder.util;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.log4j.Logger;
/**
* @Description 日志记录类
* @author panteng
* @version V0.0.1
* @date 2016-09-08
*/
public class SysLog {
public static Logger log = Logger.getLogger(SysLog.class);
/**
* 打印警告
*
* @param obj
*/
public static void warn(Object obj) {
try{
/*** 获取输出信息的代码的位置 ***/
String location = "";
StackTraceElement[] stacks = Thread.currentThread().getStackTrace();
location = stacks[2].getClassName() + "." + stacks[2].getMethodName()
+ "(" + stacks[2].getLineNumber() + ")";
/*** 是否是异常 ***/
if (obj instanceof Exception) {
Exception e = (Exception) obj;
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw, true));
String str = sw.toString();
log.warn(location + str);
} else {
log.warn(location + obj.toString());
}
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
/**
* 打印信息
*
* @param obj
*/
public static void info(Object obj) {
try{
/*** 获取输出信息的代码的位置 ***/
String location = "";
StackTraceElement[] stacks = Thread.currentThread().getStackTrace();
location = stacks[2].getClassName() + "." + stacks[2].getMethodName()
+ "(" + stacks[2].getLineNumber() + ")";
/*** 是否是异常 ***/
if (obj instanceof Exception) {
Exception e = (Exception) obj;
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw, true));
String str = sw.toString();
log.info(location + str);
} else {
log.info(location + obj.toString());
}
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
/**
* 打印错误
*
* @param obj
*/
public static void error(Object obj) {
try{
/*** 获取输出信息的代码的位置 ***/
String location = "";
StackTraceElement[] stacks = Thread.currentThread().getStackTrace();
location = stacks[2].getClassName() + "." + stacks[2].getMethodName()
+ "(" + stacks[2].getLineNumber() + ")";
/*** 是否是异常 ***/
if (obj instanceof Exception) {
Exception e = (Exception) obj;
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw, true));
String str = sw.toString();
log.error(location + str);
} else {
log.error(location + obj.toString());
}
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
/**
* 向数据库告警表中插入信息
* @param obj
*/
public static void dbWarn(Object obj) {
try{
String printInfo = "";
/*** 获取输出信息的代码的位置 ***/
String location = "";
StackTraceElement[] stacks = Thread.currentThread().getStackTrace();
location = stacks[2].getClassName() + "." + stacks[2].getMethodName()
+ "(" + stacks[2].getLineNumber() + ")";
/*** 是否是异常 ***/
if (obj instanceof Exception) {
Exception e = (Exception) obj;
printInfo = location + e.getMessage();
log.fatal(printInfo.substring(0, printInfo.length() > 512?512:printInfo.length()));
} else {
printInfo = location + obj.toString();
log.fatal(printInfo.substring(0, printInfo.length() > 512?512:printInfo.length()));
}
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
/**
* 获取调用此函数的代码的位置
* @return 包名.类名.方法名(行数)
*/
public static String getCodeLocation(){
try{
/*** 获取输出信息的代码的位置 ***/
String location = "";
StackTraceElement[] stacks = Thread.currentThread().getStackTrace();
location = stacks[2].getClassName() + "." + stacks[2].getMethodName()
+ "(" + stacks[2].getLineNumber() + ")";
return location;
}catch (Exception e) {
// TODO: handle exception
SysLog.error(e);
return "";
}
}
}
配置文件：
base.logs.dir=D:/testMycatLog
log4j.rootLogger = DEBUG, INFO, all_log, stdout ,DB
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %-5p [%-15x] [%t] - %m%n
log4j.appender.all_log=org.apache.log4j.DailyRollingFileAppender
log4j.appender.all_log.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.all_log.File=${base.logs.dir}/all_log.log
log4j.appender.all_log.layout=org.apache.log4j.PatternLayout
log4j.appender.all_log.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %-5p [%-15x] [%t] - %m%n
log4j.appender.DB = org.apache.log4j.jdbc.JDBCAppender
log4j.appender.DB.BufferSize=1
log4j.appender.DB.driver=com.mysql.jdbc.Driver
log4j.appender.DB.URL=jdbc:mysql://192.168.91.231:8066/CTPDB
log4j.appender.DB.user=ctp
log4j.appender.DB.password=ctp
log4j.appender.DB.Threshold =FATAL
log4j.appender.DB.layout = org.apache.log4j.PatternLayout
log4j.appender.DB.sql=insert into syswarn(WARN_LEVEL,WARN_INFO) values("1",'%m');
#--------------kafka配置----------------#
log4j.appender.kafkaAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.kafkaAppender.File=${base.logs.dir}/server.log
log4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.stateChangeAppender.File=${base.logs.dir}/state-change.log
log4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.requestAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.requestAppender.File=${base.logs.dir}/kafka-request.log
log4j.appender.requestAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.cleanerAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.cleanerAppender.File=${base.logs.dir}/log-cleaner.log
log4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
log4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.controllerAppender.File=${base.logs.dir}/controller.log
log4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.controllerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
# Turn on all our debugging info
#log4j.logger.kafka.producer.async.DefaultEventHandler=DEBUG, kafkaAppender
#log4j.logger.kafka.client.ClientUtils=DEBUG, kafkaAppender
#log4j.logger.kafka.perf=DEBUG, kafkaAppender
#log4j.logger.kafka.perf.ProducerPerformance$ProducerThread=DEBUG, kafkaAppender
#log4j.logger.org.I0Itec.zkclient.ZkClient=DEBUG
log4j.logger.kafka=INFO, kafkaAppender
log4j.logger.kafka.network.RequestChannel$=WARN, requestAppender
log4j.additivity.kafka.network.RequestChannel$=false
#log4j.logger.kafka.network.Processor=TRACE, requestAppender
#log4j.logger.kafka.server.KafkaApis=TRACE, requestAppender
#log4j.additivity.kafka.server.KafkaApis=false
log4j.logger.kafka.request.logger=WARN, requestAppender
log4j.additivity.kafka.request.logger=false
log4j.logger.kafka.controller=TRACE, controllerAppender
log4j.additivity.kafka.controller=false
log4j.logger.kafka.log.LogCleaner=INFO, cleanerAppender
log4j.additivity.kafka.log.LogCleaner=false
log4j.logger.kafka.log.Cleaner=INFO, cleanerAppender
log4j.additivity.kafka.log.Cleaner=false
log4j.logger.state.change.logger=TRACE, stateChangeAppender
log4j.additivity.state.change.logger=false
#---------------------------------------#
