将Log4J日志写入数据库

首先创建一数据库表说明:

字段	描述
GUID	流水号
DATE	时间
THREAD	当前线程
LEVEL	当前级别
CLASS	当前java程序/方法
MESSAGES	当前输出信息

log4j.properties如下配置:

 

log4j.rootLogger=DEBUG,CONSOLE,DATABASE

log4j.addivity.org.apache=true

########################

# JDBC Appender

#######################

log4j.appender.DATABASE.Threshold=INFO

log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender

#log4j.appender.DATABASE.BufferSize=10

log4j.appender.DATABASE.URL=you jdbcurl

log4j.appender.DATABASE.driver=you jdbc driver

log4j.appender.DATABASE.user=

log4j.appender.DATABASE.password=

log4j.appender.DATABASE.sql=INSERT INTO YOU_LOG_TABLE  VALUES ('%d{yyyy-MM-dd HH:mm:ss}', '%t', '%p', '%l', '%m')

log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout

 

下面我们对“%d %t %p %l %m %n”一一讲解：

l         %d输出日志时间点的日期或时间，默认格式为ISO8601，也可以在其后指定格式，比如：%d{yyyy-MM-dd HH:mm:ss}，输出类似：2005-7-19 17:49:27，刚好适合插入SQLServer；

l         %t  产生该日志事件的线程名；

l         %p 日志的log_level，如DEBUG、WARN或者INFO；

l         %c  输出所属的类目，通常就是所在类的全名，如“iNotes.Default”；

l         %m 日志的内容；

l         %l  输出日志事件的发生位置，包括类目名、发生的线程，以及在代码中的行数。如write2database.main(write2database.java:33)；

l         %n  输出一个回车换行符，Windows平台为“ ”，Unix平台为“ ”

 

程序代码:

 

import sun.jdbc.odbc.*;

import java.sql.*;

 

 

import org.apache.log4j.Category;

import org.apache.log4j.Level;

import org.apache.log4j.Logger;

import org.apache.log4j.PropertyConfigurator;

import org.apache.log4j.jdbc.*;

 

 

/*

    add for log4j: class Logger is the central class in the log4j package.

    we can do most logging operations by Logger except configuration.

    getLogger(...): retrieve a logger by name, if not then create for it.

    */

    static Logger logger = Logger.getLogger

            ( write2database.class.getName () ) ;

       

/*

        add for log4j: class BasicConfigurator can quickly configure the package.

        print the information to console.

        */

        PropertyConfigurator.configure ( "log4j2database.properties" ) ;

       

        logger.info ( "just test" ) ;

import sun.jdbc.odbc.*;

import java.sql.*;

 

 

import org.apache.log4j.Category;

import org.apache.log4j.Level;

import org.apache.log4j.Logger;

import org.apache.log4j.PropertyConfigurator;

import org.apache.log4j.jdbc.*;

 

 

/*

    add for log4j: class Logger is the central class in the log4j package.

    we can do most logging operations by Logger except configuration.

    getLogger(...): retrieve a logger by name, if not then create for it.

    */

    static Logger logger = Logger.getLogger

            ( write2database.class.getName () ) ;

       

/*

        add for log4j: class BasicConfigurator can quickly configure the package.

        print the information to console.

        */

        PropertyConfigurator.configure ( "log4j2database.properties" ) ;

       

        logger.info ( "just test" ) ;

下面我们对“%d %t %p %l %m %n”一一讲解：

l         %d输出日志时间点的日期或时间，默认格式为ISO8601，也可以在其后指定格式，比如：%d{yyyy-MM-dd HH:mm:ss}，输出类似：2005-7-19 17:49:27，刚好适合插入SQLServer；

l         %t  产生该日志事件的线程名；

l         %p 日志的log_level，如DEBUG、WARN或者INFO；

l         %c  输出所属的类目，通常就是所在类的全名，如“iNotes.Default”；

l         %m 日志的内容；

l         %l  输出日志事件的发生位置，包括类目名、发生的线程，以及在代码中的行数。如write2database.main(write2database.java:33)；

l         %n  输出一个回车换行符，Windows平台为“ ”，Unix平台为“ ”

 

程序代码:

 

import sun.jdbc.odbc.*;

import java.sql.*;

 

 

import org.apache.log4j.Category;

import org.apache.log4j.Level;

import org.apache.log4j.Logger;

import org.apache.log4j.PropertyConfigurator;

import org.apache.log4j.jdbc.*;

 

 

/*

    add for log4j: class Logger is the central class in the log4j package.

    we can do most logging operations by Logger except configuration.

    getLogger(...): retrieve a logger by name, if not then create for it.

    */

    static Logger logger = Logger.getLogger

            ( write2database.class.getName () ) ;

       

/*

        add for log4j: class BasicConfigurator can quickly configure the package.

        print the information to console.

        */

        PropertyConfigurator.configure ( "log4j2database.properties" ) ;

       

        logger.info ( "just test" ) ;

import sun.jdbc.odbc.*;

import java.sql.*;

 

 

import org.apache.log4j.Category;

import org.apache.log4j.Level;

import org.apache.log4j.Logger;

import org.apache.log4j.PropertyConfigurator;

import org.apache.log4j.jdbc.*;

 

 

/*

    add for log4j: class Logger is the central class in the log4j package.

    we can do most logging operations by Logger except configuration.

    getLogger(...): retrieve a logger by name, if not then create for it.

    */

    static Logger logger = Logger.getLogger

            ( write2database.class.getName () ) ;

       

/*

        add for log4j: class BasicConfigurator can quickly configure the package.

        print the information to console.

        */

        PropertyConfigurator.configure ( "log4j2database.properties" ) ;

       

        logger.info ( "just test" ) ;