Websphere部署項目使用Log4j指定Log信息存放路徑

今天部署一個JSF項目到Websphere上，因為本機開發都是用Tomcat，所以Log4j.properties文件信息如下：

1. #
   
2. # $Revision:1.2 $
   
3. # $Date:2010/07/19
   03:29:48 $
   
4. #
   
5. log4j.rootLogger=INFO, DefLog
   
6.  
7. #catalina.home 為讀取系統環境變數的值
   
8. log4j.appender.DefLog=org.apache.log4j.RollingFileAppender
   
9. log4j.appender.DefLog.File=${catalina.home}/logs/flow.log
   
10. log4j.appender.DefLog.DatePattern=‘.’yyyy-MM-dd‘.log’
    
11. log4j.appender.DefLog.maxBackupIndex=10
    
12. log4j.appender.DefLog.maxFileSize=10MB
    
13. log4j.appender.DefLog.Append=true
    
14. log4j.appender.DefLog.layout=org.apache.log4j.PatternLayout
    
15. log4j.appender.DefLog.layout.ConversionPattern=%5p [%t] [%d] (%c) – %m%n
    

然後用Ant打包項目生成war檔部署在Webphere上，輸入地址訪問報500內部錯誤，然後查找log信息，費了好大的勁在以下目錄下找到了log檔：

（安裝目錄）\IBM\WebSphere\AppServer\profiles\AppSrv01\logs\server1 SystemOut.log

路徑比較難找，所以為了方便起見，我想指定簡單的log信息路徑如：D:\flow.log，該怎麼辦呢？

1. 先改動Log4j的配置

1. #
   
2. # $Revision:1.2 $
   
3. # $Date:2010/07/19
   03:29:48 $
   
4. #
   
5. log4j.rootLogger=INFO, DefLog
   
6.  
7. log4j.appender.DefLog=org.apache.log4j.RollingFileAppender
   
8. log4j.appender.DefLog.File=D:/logs/flow.log
   
9. log4j.appender.DefLog.DatePattern=‘.’yyyy-MM-dd‘.log’
   
10. log4j.appender.DefLog.maxBackupIndex=10
    
11. log4j.appender.DefLog.maxFileSize=10MB
    
12. log4j.appender.DefLog.Append=true
    
13. log4j.appender.DefLog.layout=org.apache.log4j.PatternLayout
    
14. log4j.appender.DefLog.layout.ConversionPattern=%5p [%t] [%d] (%c) – %m%n
    

在WEB-INF所在的路徑建立文件夾：META-INF/service，再建立名為org.apache.commons.logging.LogFactory的文件，其內容為

1. org.apache.commons.logging.impl.LogFactoryImpl
   

在web.xml文件里添加以下代碼：

1. <listener>
   
2. <listener-class>com.system.Log4jInit</listener-class>
   
3. </listener>
   

Log4jInit.java代碼如下：

1. package com.system;
   
2.  
3. import javax.servlet.ServletContextEvent;
   
4. import javax.servlet.ServletContextListener;
   
5.  
6. import org.apache.commons.logging.LogFactory;
   
7. import org.apache.commons.logging.impl.Log4JLogger;
   
8. import org.apache.log4j.PropertyConfigurator;
   
9.  
10. public
    class Log4jInitimplements ServletContextListener {
    
11.  
12. public
    void contextInitialized(ServletContextEvent event) {
    
13. String path = event.getServletContext().getRealPath(“WEB-INF/classes/log4j.properties”);
    
14. LogFactory.getFactory().setAttribute(“org.apache.commons.logging.Log”, Log4JLogger.class.getName());
    
15. PropertyConfigurator.configure(path);
    
16.  
17. // System.out.println(“log properties path : ” + path);
    
18. // Log logger = LogFactory.getLog(this.getClass());
    
19. // logger.error(“Log4jInit initial………”);
    
20. }
    
21.  
22. public
    void contextDestroyed(ServletContextEvent arg0) {
    
23. }
    
24.  
25. }
    

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