Swing中文件选择器

今天同事开发了一些导入导出功能，我不经意间看到了选择器。感觉挺不错的，然后发了上来

package com.deppon.util;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;

import com.sun.xml.internal.messaging.saaj.util.ByteInputStream;

public class ChooserTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		chooserSomething();
	}
	
	/**
	 * @desc 通过弹出的框框进行选择文件
	 * @author 张兴旺
	 * @date 2012-12-27
	 */
	public static void chooserSomething(){
		JFileChooser chooser = new JFileChooser();
		
		chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
		
		FileFilter fileFilter = new FileFilter() {
			
			@Override
			public boolean accept(File pathname) {
				String name = pathname.getName().toLowerCase();
				if (name.endsWith(".png") || name.endsWith(".jpg")
						|| name.endsWith(".bmp") || name.endsWith(".gif")
						|| pathname.isDirectory()) {
					return true;
				} 
				return false;
			}
			

			@Override
			public String getDescription() {
				return "图片文件";
			}
		};
		
		chooser.addChoosableFileFilter(fileFilter);
		int result = chooser.showOpenDialog(null);
		if(result == JFileChooser.APPROVE_OPTION){
			File selectedImage = chooser.getSelectedFile();
			//以下可以作必要的动作，比如上传到数据库里面，则要有一个转换成Byte字节文件
			System.out.println(selectedImage.getAbsolutePath());
			System.out.println(getByteFromFile(selectedImage).length);
			byte[] image = getByteFromFile(selectedImage);
			Connection con = JdbcUtil.getConnection();
			PreparedStatement psmt = null;
			ByteArrayInputStream bins = null;
			String sql = "insert into tbbyte(idtbbyte,byteimage) values(?,?)";
			try {
				bins = new ByteArrayInputStream(getByteFromFile(selectedImage));
				psmt = con.prepareStatement(sql);
				psmt.setInt(1, 1);
				psmt.setBinaryStream(2, bins, image.length);
//				if(!psmt.execute()){
//					bins.close();
//					psmt.close();
//				}
				psmt.execute();
				bins.close();
				psmt.close();
			} catch (SQLException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}finally{
				JdbcUtil.closeConnection(con, psmt, null);
			}
		}
	}
	
	/**
	 * @desc 将文件转换成字节流，可以方便的存储到数据库中
	 * @author 张兴旺
	 * @date 2012-12-27
	 * @param file
	 * @return
	 */
	private static byte[] getByteFromFile(File file){
		if(file != null){
			int size = (int) file.length();
			FileInputStream fs = null;
			try {
				fs = new FileInputStream(file);
			} catch (FileNotFoundException e) {
				e.printStackTrace();
			}
			byte[] bts = null;
			if(size>0){
				bts = new byte[size];
				try {
					fs.read(bts);
				} catch (IOException e) {
					e.printStackTrace();
				}
				return bts;
			}
		}
		return null;
	}

}