mainframe.java~2~

使用Log4j进行日志操作的应用事例

package apachelog4j;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import org.apache.log4j.PropertyConfigurator;
import org.apache.log4j.Logger;

public class MainFrame extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("This is Log4j");

    PropertyConfigurator.configure("log4j.properties");

    Logger loggerConsole = Logger.getRootLogger();
    loggerConsole.info("这是向控制台输出的一般信息文字");
    loggerConsole.warn("这是向控制台输出的警告类别的信息文字");

    Logger loggerFile= Logger.getLogger("thisProject.file");
    loggerFile.warn("这是向指定的log文件中输出的警告类别的信息文字");
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
}