import java.text.SimpleDateFormat;
import java.util.Calendar;

import net.fckeditor.connector.ConnectorServlet;

import org.apache.commons.lang.StringUtils;

public class FileUtl {
	/**
	 * 文件重命名(带后缀)
	 * @param fileName
	 * @return
	 */
	public static String replaceFileName(String fileName) {

		StringBuilder builder = new StringBuilder();
		if (StringUtils.isNotEmpty(fileName)) {
			int index = fileName.lastIndexOf(".");
			if (index > 0) {
				SimpleDateFormat format = new SimpleDateFormat(
						"yyyyMMddHHmmssSSS");

				String suffix = fileName.substring(index);// 文件后缀名
				Calendar cal = Calendar.getInstance();

				builder.append(format.format(cal.getTime()));
				builder.append(suffix);
			}
		}
		return builder.toString();
	}

	/**
	 * 文件重命名(不带后缀)
	 * @param fileName
	 * @return
	 */
	public static String replaceName(String fileName) {

		StringBuilder builder = new StringBuilder();
		if (StringUtils.isNotEmpty(fileName)) {
			SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmssSSS");
			Calendar cal = Calendar.getInstance();
			builder.append(format.format(cal.getTime()));
		}
		return builder.toString();
	}
}