viewlogaction.java

一个优秀的干洗店管理系统

package view.control.viewaction;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import view.dialog.log.ViewLog;



public class ViewLogAction implements ActionListener, ItemListener {

  private ViewLog log = null;

  public static String logfilename;

  public ViewLogAction(ViewLog log) {
    this.log = log;
  }

  public void OpenLog() {
    try {
      FileInputStream reader = new FileInputStream(new File("日志文件//"
          + logfilename));
      StringBuffer strbuff = new StringBuffer();
      BufferedInputStream in = new BufferedInputStream(reader);
      byte[] b = new byte[1024];
      int len;
      while ((len = in.read(b)) != -1) {
        strbuff.append(new String(b, 0, len));
      }
      log.setText(strbuff.toString());
    } catch (FileNotFoundException e1) {
      e1.printStackTrace();
    } catch (IOException e1) {
      e1.printStackTrace();
    } catch (Exception e1) {
      e1.printStackTrace();
    }
  }

  public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().equals("退出")) {
      log.dispose();
    } else if (e.getActionCommand().equals("打开日志文件")) {
      OpenLog();
    }
  }

  public void itemStateChanged(ItemEvent e) {
    logfilename = log.getSelectItem();
    OpenLog();
  }
}