package onlyfun.caterpillar;
import java.io.*;
import java.util.logging.*;
public class SimpleThreadLogger {
private static final
java.lang.ThreadLocal<Logger> threadLocal =
new java.lang.ThreadLocal<Logger>();
public static void log(String msg) {
getThreadLogger().log(Level.INFO, msg);
}
private static Logger getThreadLogger() {
Logger logger = threadLocal.get();
if(logger == null) {
try {
logger = Logger.getLogger(
Thread.currentThread().getName());
// Logger 預設是在主控台輸出
// 我們加入一個檔案輸出的Handler
// 它會輸出XML的記錄文件
logger.addHandler(
new FileHandler(
Thread.currentThread().getName()
+ ".log"));
}
catch(IOException e) {}
threadLocal.set(logger);
}
return logger;
}
}