怎么用java把tiff格式的图片转jpg的图片

Question

FCXIsPig FCX=new FCXIsPig(250);
FCX.pig(FCX);
then
System.out.println("FCX is real 250,is 24k pig");

Answer 1

为了说明图像I/O库的用法，下面的例子使用JFileChooser提示输入图像文件名。选中文件后再选择目标输出格式，然后按下“Save（保存）”按钮。保存完成后，将重新读取图像并在一个新窗口内显示。import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;public class Converting extends JFrame {    JLabel promptLabel;    JTextField prompt;    JButton promptButton;    JFileChooser fileChooser;    JComboBox comboBox;?    JButton saveButton;?    public Converting() {        super("Image Conversion");        setDefaultCloseOperation(EXIT_ON_CLOSE);        Container contentPane = getContentPane();        JPanel inputPanel = new JPanel();        promptLabel = new JLabel("Filename:");        inputPanel.add(promptLabel);        prompt = new JTextField(20);        inputPanel.add(prompt);        promptButton = new JButton("Browse");        inputPanel.add(promptButton);        contentPane.add(inputPanel, BorderLayout.NORTH);
        fileChooser = new JFileChooser();        promptButton.addActionListener(            new ActionListener() {                public void actionPerformed(ActionEvent e) {                    int returnValue =                           fileChooser.showOpenDialog(null);                    if (returnValue ==                          JFileChooser.APPROVE_OPTION) {                      File selectedFile =                             fileChooser.getSelectedFile();                       if (selectedFile != null) {                          prompt.setText(selectedFile.getAbsolutePath());                       }                    }                }            }        );
        JPanel outputPanel = new JPanel();        String writerFormats[] =                 ImageIO.getWriterFormatNames();        ComboBoxModel comboBoxModel = new                 DefaultComboBoxModel(writerFormats);        comboBox = new JComboBox(comboBoxModel);        outputPanel.add(comboBox);        saveButton = new JButton("Save");        outputPanel.add(saveButton);        saveButton.addActionListener(            new ActionListener() {                public void actionPerformed(ActionEvent e) {                    try {                    String name = prompt.getText();                    File file = new File(name);                    if (file.exists()) {                        BufferedImage image =                                 ImageIO.read(file.toURL());                    if (image == null) {                        System.err.println("Invalid input                                 file format");                    } else {                       String selection =                              (String)comboBox.getSelectedItem();                        String outputFilename = name +                                "." + selection;                        File outputFile = new File(outputFilename);                        boolean found = ImageIO.write(image,                                 selection, outputFile);                        if (found) {                          JDialog window = new JDialog();                          Container windowContent =                                    window.getContentPane();                          BufferedImage newImage =                                    ImageIO.read(outputFile);                          JLabel label = new JLabel(new                                    ImageIcon(newImage));                         JScrollPane pane = new                                    JScrollPane(label);                        windowContent.add(pane,                                  BorderLayout.CENTER);                        window.setSize(300, 300);                        window.show();                    } else {                      System.err.println("Error saving");                    }                 }              } else {                 System.err.println("Bad filename");              }           } catch (MalformedURLException mur) {              System.err.println("Bad filename");          } catch (IOException ioe) {             System.err.println("Error reading file");         }      }    }  );
  contentPane.add(outputPanel, BorderLayout.SOUTH);
  }  public static void main(String args[]) {      JFrame frame = new Converting();      frame.pack();      frame.show();  }}