Log4J 配置，自定义错误，邮件发送，解决中文乱码！

原文链接：http://blog.sina.com.cn/s/blog_56410d650100jl9b.html

所需jar包:在apache官网下载相关最新的jar包，并在项目中引用（activation.jar，mail.jar），此外还有log4j的jar包

以下为配置文件 

================================================================================================

# Global logging configuration
log4j.rootLogger=info, stdout,D,MAIL

### 输出到控制台 ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-ddHH:mm:ss,SSS} [%5p] %c{1}:%l - %m%n

### 输出到日志文件 ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${catalina.home}/logs/GEWS_MSP.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = info ## 输出info级别以上的日志
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %d{yyyy-MM-ddHH:mm:ss,SSS} [%5p] %c{1}:%l - %m%n

### send error through email.
# log4j的邮件发送appender，如果有必要你可以写自己的appender
log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
#发送邮件的门槛，仅当等于或高于ERROR（比如FATAL）时，邮件才被发送
log4j.appender.MAIL.Threshold=ERROR
#邮件缓冲区大小
log4j.appender.MAIL.BufferSize=1024
#发送邮件的邮箱帐号
log4j.appender.MAIL.From=****@126.com
#SMTP邮件发送服务器地址
log4j.appender.MAIL.SMTPHost=smtp.126.com
#SMTP发送认证的帐号名
log4j.appender.MAIL.SMTPUsername=****@126.com
#SMTP发送认证帐号的密码
log4j.appender.MAIL.SMTPPassword=*****
#是否打印调试信息，如果选true，则会输出和SMTP之间的握手等详细信息
log4j.appender.MAIL.SMTPDebug=true
#邮件主题
log4j.appender.MAIL.Subject=GEWS_SYSTEM_ERROR(192.168.2.39)
#发送到什么邮箱，如果要发送给多个邮箱，则用逗号分隔；
#如果需要bcc给某人，则加入下列行：
#[email protected]
[email protected],[email protected]
log4j.appender.MAIL.layout=com.zjxcsoft.util.MailLayout_seth
log4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c-%-4r [%t] %-5p %c %x - %m%n

 

中文乱码解决：

==================================================================================================
package com.zjxcsoft.util;

import org.apache.log4j.Layout;
import org.apache.log4j.spi.LoggingEvent;

public class MailLayout_seth extendsLayout{
   StringBuffersbuf;  
    @Override    
    public StringgetContentType()   
    {     
        return"text/html;charset=utf-8";  
    }  
    public MailLayout_seth(){  
        sbuf = newStringBuffer(128);  
    }  
    @Override 
    public String format(LoggingEventevent)   
    {  
        sbuf.setLength(0);  
        sbuf.append("错误等级："+event.getLevel().toString()+"
");  
        sbuf.append("错误原因："+event.getMessage().toString()+"
");  
        sbuf.append("错误的类："+event.getLocationInformation().getClassName()+"
");  
        sbuf.append("错误方法："+event.getLocationInformation().getMethodName()+"
");  
        sbuf.append("错误位置："+event.getLocationInformation().getLineNumber()+"行");  
        return sbuf.toString();  
    }  
    @Override 
    public boolean ignoresThrowable(){  
        // TODO Auto-generated methodstub  
        return false;  
    }  
    public void activateOptions(){  
        // TODO Auto-generated methodstub             
    }  

}

 

自定义发送日志级别：

1.首先我测试的时候是用的info的级别，所以在发送mail的过程中出错了，信息都不会打印出来，并且mail也收不到，我就很奇怪，然后我把log的级别调成error，控制台才打印出了mail 发送失败的log信息，经查阅发现：Log4j的SMTP的级别默认是ERROR级别
默认是ERROR级别，那就是说，只有程序出错了，才可以收到邮件。不过可以自定义的级别，继承TriggeringEventEvaluator类，具体实现见下方代码：

public class IMTriggeringEventEvaluator implements TriggeringEventEvaluator {

    @Override
    public boolean isTriggeringEvent(LoggingEvent arg0) {

        return arg0.getLevel().isGreaterOrEqual(Level.DEBUG);
    }

}

自定义的Appender：

import org.apache.log4j.net.SMTPAppender;
import org.apache.log4j.spi.LoggingEvent;

public class IMSMTPAppender extends SMTPAppender {
    public IMSMTPAppender() {
        super(new IMTriggeringEventEvaluator());
        Runtime.getRuntime().addShutdownHook(new Thread() {
            public void run() {
                if (cb.length() > 0) {
                    sendBuffer();
                }
            }
        });
    }

注意事项：

===========================================================================================

邮件方式一般只处理ERROR以上异常。

邮件发送服务器请选择126或者163的，经测试sina的发送服务器很可能导致发送失败

SMTP之间的握手信息：

============================================================================================

EHLO seth-PC
250-mail
250-PIPELINING
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-coremail1Uxr2xKj7kG0xkI17xGrU7I0s8FY2U3Uj8Cz28x1UUUUU7Ic2I0Y2UrUaXObUCa0xDrUUUUj
250 8BITMIME
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "AUTH", arg "LOGIN PLAIN"
DEBUG SMTP: Found extension "AUTH=LOGIN", arg "PLAIN"
DEBUG SMTP: Found extension "coremail", arg"1Uxr2xKj7kG0xkI17xGrU7I0s8FY2U3Uj8Cz28x1UUUUU7Ic2I0Y2UrUaXObUCa0xDrUUUUj"
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Attempt to authenticate
AUTH LOGIN
334 dXNlcm5hbWU6
c2V0aDM0QDEyNi5jb20=
334 UGFzc3dvcmQ6
Y3gzNDA2NTIw
235 Authentication successful
DEBUG SMTP: use8bit false
MAIL FROM:<[email protected]>
250 Mail OK
RCPT TO:<[email protected]>
250 Mail OK
RCPT TO:<[email protected]>
250 Mail OK
DEBUG SMTP: Verified Addresses
DEBUG SMTP:  [email protected]
DEBUG SMTP:  [email protected]
DATA
354 End data with.
Message-ID: <31013261.01278665286649.JavaMail.seth@seth-PC>
Date: Fri, 9 Jul 2010 08:48:06 +0000 (GMT)
From: [email protected]
To: [email protected], [email protected]
Subject: GEWS_SYSTEM_ERROR(192.168.2.39)
MIME-Version: 1.0
Content-Type: multipart/mixed;boundary="----=_Part_0_5034054.1278665286559"

------=_Part_0_5034054.1278665286559
Content-Type: text/html;charset=utf-8
Content-Transfer-Encoding: quoted-printable

=E9=94=99=E8=AF=AF=E7=AD=89=E7=BA=A7=EF=BC=9AERROR
=E9=94=99=E8=AF=AF=E5=
=8E=9F=E5=9B=A0=EF=BC=9Atestdddddddddddddddddddddddddd
=E9=94=99=E8=AF=
=AF=E7=9A=84=E7=B1=BB=EF=BC=9Acom.zjxcsoft.webservice_msp.WebServiceImpl_MS=
P
=E9=94=99=E8=AF=AF=E6=96=B9=E6=B3=95=EF=BC=9AWsAccpData_MSP
=E9=94=
=99=E8=AF=AF=E4=BD=8D=E7=BD=AE=EF=BC=9A15=E8=A1=8C
------=_Part_0_5034054.1278665286559--

.
250 Mail OK queued as smtp7,DsmowKArmANA4jZMbIQJAA--.3261S21278665281
QUIT
2010-07-09 08:48:07,730 [FATAL]WebServiceImpl_MSP:com.zjxcsoft.webservice_msp.WebServiceImpl_MSP.WsAccpData_MSP(WebServiceImpl_MSP.java:16)- test###########################
DEBUG: getProvider() returningjavax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,SunMicrosystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.126.com", port 25,isSSL false
220 126.com Anti-spam GT for Coremail System(126com[20090903])
DEBUG SMTP: connected to host "smtp.126.com", port: 25