logfileanalyse.java

对Windows系统产生的非常巨大的日志文件进行分累统计并进行格式打印.手动去搜索统计某个或几个你所关心事件或内容几乎不太可能。

/**
 * 
 */
package logfileAnalyse;

/**
 * @author Jack
 *
 */
public class LogfileAnalyse {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		double begin = 0, end = 0;
		
		if (args.length == 0) {
	         System.err.println("Please input the log file!");
	         System.err.println("Usage Example: LogfileAnalyse test.log");
	         return;
		}
		else {
			if(args[0].endsWith(".log"))
			{
				EventCount ec = new EventCount(args[0]);
				ProcessCount pc = new ProcessCount(args[0]);
				ProcessRunTime pt = new ProcessRunTime(args[0]);

				ec.calculate();
				pc.calculate();
				pt.calculate();
				begin = ec.getBegin();
				end = ec.getEnd();
				System.out.println(ec);		
				System.out.println(pc);		
				System.out.println(pt);
		
				if( (end - begin) <= 0 ) {
					System.out.println("Calculating time error!");
					return;
				}
				else
					System.out.printf("Processing data/onelog (%d events) took %2.2f seconds at %2.2f events/second",
						ec.getTotalEvents(), (end - begin)/1000, ec.getTotalEvents()*1000/(end - begin));
			}
			else {
				System.err.println("The input file incorrect! Please try again...");
		        System.err.println("Usage Example: LogfileAnalyse test.log");
			}
		}
	}
}