public class AccLogBase {

/**致命錯誤. */

public static final int LOG_LEVEL_FATAL = 1;

/** 錯誤. */

public static final int LOG_LEVEL_ERROR = 2;

/** 警告. */

public static final int LOG_LEVEL_WARN = 3;

/**信息. */

public static final int LOG_LEVEL_INFO = 4;

/** debug. */

public static final int LOG_LEVEL_DEBUG = 5;

/** 定義log基類 */

private static Logger log = null;

/**

* 獲得log實例.

* @param cls 輸出log日志class

*/

@SuppressWarnings("unchecked")

protected final void getLogInstance(final Class cls) {

if (log == null) {

log = Logger.getLogger(cls);

}

}

/**

* 構造函數.

*/

public AccLogBase() {

//這里面將log4j.properties放到src路徑下，如果是weblogic服務器，放到domain目錄下

//或者通過 Properties prop = new Properties()；InputStream inputStream = new FileInputStream(“C:/log4j.properties”);?//log4j.properties的絕對路徑

//prop.load(inputStream);?PropertyConfigurator.configure(prop);

PropertyConfigurator.configure("log4j.properties");

getLogInstance(this.getClass());

}

/**

* 輸出log日志.

* @param className

* @param methodName

* @param level

* @param msg

*/

protected final void writeLog(final String className,final String msg, final String methodName,final Throwable exp,final int level) {

StringBuffer message = new StringBuffer();

message.append("[");

message.append(className);

message.append("#");

message.append(methodName);

message.append("]");

switch (level) {

case LOG_LEVEL_FATAL:

if (exp != null) {

log.fatal(message.toString(), exp);

} else {

log.fatal(message.toString());

}

break;

case LOG_LEVEL_ERROR:

if (exp != null) {

log.error(message.toString(), exp);

} else {

log.error(message.toString());

}

break;

case LOG_LEVEL_WARN:

if (exp != null) {

log.warn(message.toString(), exp);

} else {

log.warn(message.toString());

}

break;

case LOG_LEVEL_INFO:

if (exp != null) {

log.info(message.toString(), exp);

} else {

log.info(message.toString());

}

break;

case LOG_LEVEL_DEBUG:

if (exp != null) {

log.debug(message.toString(), exp);

} else {

log.debug(message.toString());

}

break;

default:

break;

}

}

}

public class TestLog extends AccLogBase {

/**

* 構造函數.

*/

public TestLog() {

}

private String className = this.getClass().getSimpleName();

private String methodName = "";

/**

* 測試日志輸出.

*/

public final?void testLog () {

methodName = new Throwable().getStackTrace()[0].getMethodName();

String message = “測試日志輸出”;

//+ 処理開始，輸出日志文件。

writeLog(className,message, methodName,"",4);

}

}

#######log4j.properties配置信息########

log4j.appender.file=org.apache.log4j.FileAppender log4j.appender.file.File=./servers/AdminServer/logs/acc_servelet.log log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %m %n log4j.rootLogger=DEBUG, file

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