kettle使用log4j管理输出日志

//Script here
//updateOuputLog();
//confFile  日志配置文件路径
//增加日志输出文件
//通过/../conf/log.xml文件配置日志输出
function updateOutputLog(confFile){
   var first = getVariable("FIRST_TIME_UPDATE_LOG", "true");
   if(first == "true"){
       logWriter = org.pentaho.di.core.logging.LogWriter.getInstance();
       var softPath = getThisSoftPath();
       setVariable("WORKDIR", softPath, "s");//设置日志路径变量
       var logConf = softPath + "/../conf/log.xml";
       if(confFile != null && confFile != ""){
          logConf = softPath + "/" + confFile;
       }else{
          if(!fileExists(logConf)){
              logConf = softPath + "/log.xml";
          }
          if(!fileExists(logConf)){
              logConf = softPath + "/conf/log.xml";
          }
       }
       writeToLog("m", "======logConfPath====>"+logConf);
       org.apache.log4j.xml.DOMConfigurator.configure(logConf);
       var logger = org.apache.log4j.Logger.getLogger("kettle_log");
       var appenders = logger.getAllAppenders();
       while(appenders.hasMoreElements()){
          var appender = appenders.nextElement();
          writeToLog("m", "======add==log====>"+appender.getName());
          logWriter.addAppender(appender);
       }
       setVariable("FIRST_TIME_UPDATE_LOG", "false", "r");
   }
}

//Alert(getThisSoftPath());
//返回程序所在目录 不带前缀file:
function getThisSoftPath(){
    var osName = java.lang.System.getProperty("os.name").toLowerCase();
    var path = getVariable("Internal.Transformation.Filename.Directory", "");
    if(osName.indexOf("windows") >= 0){//WINDOWS系统
        path = path.substring(8);
    }else{
        path = path.substring(7);
    }
    return path;
}

function getConfigPath(softDir,confPath,splitStr){
    var arr = confPath.split(splitStr);
    var str = softDir+arr[0];
    for(var i=1; i<arr.length; i++){
       var s = new java.lang.String(arr[i]);
       if(arr[i] != null && s.endsWith("properties")){
           str = str + splitStr + softDir+ arr[i];
       }
    }
    //Alert(str);
    return str;
}

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="kettle_info" class="org.apache.log4j.DailyRollingFileAppender">
        <param name="threshold" value="info" />
        <param name="File" value="${WORKDIR}/../log/run.log" />
        <param name="DatePattern" value="'.'yyyy-MM-dd" />
        <param name="Append" value="true" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d %-5p (%F:%L) -> %m%n" />
        </layout>
    </appender>
    <appender name="kettle_error" class="org.apache.log4j.DailyRollingFileAppender">
        <param name="threshold" value="error" />
        <param name="File" value="${WORKDIR}/../log/error.log" />
        <param name="DatePattern" value="'.'yyyy-MM-dd" />
        <param name="Append" value="true" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d %-5p (%F:%L) -> %m%n" />
        </layout>
    </appender>
    <logger name="kettle_log">
        <appender-ref ref="kettle_info" />
        <appender-ref ref="kettle_error" />
    </logger>
</log4j:configuration>

2011-06-08 09:50:28,897 INFO  (LogWriter.java:450) -> 设置默认配置文件.0 - ======add==log====>kettle_error
2011-06-08 09:50:28,897 INFO  (LogWriter.java:450) -> 设置默认配置文件.0 - 增加配置日志成功
2011-06-08 09:50:28,912 INFO  (LogWriter.java:450) -> 设置默认配置文件.0 - E:/test/src/../conf/config_static.properties
2011-06-08 09:50:28,912 INFO  (LogWriter.java:450) -> 设置默认配置文件.0 - 完成处理 (I=0, O=0, R=1, W=1, U=1, E=0
2011-06-08 09:50:28,943 INFO  (LogWriter.java:450) -> 拆分路径 2.0 - 完成处理 (I=0, O=0, R=1, W=1, U=1, E=0
2011-06-08 09:50:28,943 INFO  (LogWriter.java:450) -> 读取配置文件.0 - 配置文件：TO_DB_PWD1=test
2011-06-08 09:50:28,943 INFO  (LogWriter.java:450) -> 配置文件输入.0 - 完成处理 (I=20, O=0, R=1, W=20, U=20, E=0
2011-06-08 09:50:28,943 INFO  (LogWriter.java:450) -> 读取配置文件.0 - 配置文件：DEST_DB_UNAME2=test