Log4j之重寫JDBCAppender

新建類:MyLoggingEvent , 來轉換單引號

/**
 * 
 */
package com.hr.core;

import org.apache.log4j.Category;
import org.apache.log4j.Priority;
import org.apache.log4j.spi.LoggingEvent;

/**
 * @author zhong
 *
 */
public class MyLoggingEvent extends LoggingEvent {
    private static final long
 
 serialVersionUID = -1405129465403337629L;

    public MyLoggingEvent(String fqnOfCategoryClass, Category logger, Priority level, Object message, Throwable throwable) {

    super(fqnOfCategoryClass, logger, level, message, throwable);

    // TODO Auto-generated constructor stub

    }

    public String getThreadName
 
() {

        // TODO Auto-generated method stub

        String thrdName=super.getThreadName();

        if(thrdName.indexOf("'")!=-1){

        thrdName=thrdName.replaceAll("'", "''");

        }

        return thrdName;

    }

    public String getRenderedMessage() {

        String msg=super.getRenderedMessage();

        if
 
(msg.indexOf("'")!=-1){

        msg=msg.replaceAll("'", "''");

        }

        return msg;
    }

}

新建類：MyJDBCAppender , 來解發重寫方法的呼叫

/**
 * 
 */
package com.hr.core;

import org.apache.log4j.Category;
import org.apache.log4j.Priority;
import org.apache.log4j.jdbc.JDBCAppender;
import org.apache.log4j.spi.LoggingEvent;

/**
 * @author zhong
 *
 */
public class MyJDBCAppender extends JDBCAppender {
    protected String getLogStatement(LoggingEvent event) {

        String fqnOfCategoryClass=event.fqnOfCategoryClass;

        Category logger=Category.getRoot();

        Priority level=event.level;

        Object message=event.getMessage();

        Throwable throwable=null;

        MyLoggingEvent bEvent=new MyLoggingEvent(fqnOfCategoryClass,logger,level,message,throwable);

        return super.getLogStatement(bEvent);
    }
}

附: log4j.properties 配置

log4j.rootCategory=INFO,A3,R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy MMM dd HH:mm:ss,SSS}%m%n
log4j.logger.Java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug,stdout,logfile,A3 


log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/hr_log.log
log4j.appender.R.MaxFileSize=1024KB
log4j.appender.R.MaxBackupIndex=10
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d-[HL] %p %t %c - %m%n

#
log4j.appender.A3=com.hr.core.MyJDBCAppender
log4j.appender.A3.URL=jdbc\:sqlserver\://localhost\:1433;DatabaseName\=zhaochi_1
log4j.appender.A3.driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
log4j.appender.A3.user=sa
log4j.appender.A3.password=pwterp

#
log4j.appender.A3.layout=org.apache.log4j.PatternLayout
log4j.appender.A3.layout.ConversionPattern=INSERT INTO log4j(createDate,thread,grade,class,message) values('%d','%t','%-5p','%c','%m')