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() {@Overridepublic 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;}@Overridepublic 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;}}