图片转字符串再另存为图片代码,Java代码库,德仔网

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【Java】图片转字符串再另存为图片

作者:Kevin / 发布于2015/10/14/ 524


	import javax.swing.*;
	import javax.swing.text.*;
	import java.awt.*;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event.WindowAdapter;
	import java.awt.event.WindowEvent;
	import java.io.*;

	
	class MyDefaultEditorKit extends StyledEditorKit {

	 @Override
	 public void read(Reader in, Document doc, int pos) throws IOException, BadLocationException {
	 char[] buff = new char[4096];
	 int nch;
	 AttributeSet attr = getInputAttributes();
	 while ((nch = in.read(buff, 0, buff.length)) != -1) {
	 doc.insertString(pos, new String(buff, 0, nch), attr);
	 pos += nch;
	 }

	 }

	 @Override
	 public void write(Writer out, Document doc, int pos, int len) throws IOException, BadLocationException {
	 if ((pos < 0) || ((pos + len) > doc.getLength())) {
	 throw new BadLocationException("DefaultEditorKit.write", pos);
	 }
	 Segment data = new Segment();
	 int nleft = len;
	 int offs = pos;
	 while (nleft > 0) {
	 int n = Math.min(nleft, 4096);
	 doc.getText(offs, n, data);
	 out.write(data.array, data.offset, data.count);
	 offs += n;
	 nleft -= n;
	 }
	 out.flush();
	 }
	}

	class MainFrame extends JFrame {
	 JTextPane textPane;
	 JLabel jLabel;
	 JButton button;

	 MainFrame() {
	 setLayout(new BorderLayout());
	 button = new JButton("写图片");

	 jLabel = new JLabel();
	 textPane = new JTextPane();
	 textPane.setEditorKit(new MyDefaultEditorKit());
	 JPanel jPanel = new JPanel();
	 jPanel.add(textPane);
	 //jPanel.add(jLabel);
	 JScrollPane jScrollPane = new JScrollPane(jPanel);

	 add(button, BorderLayout.NORTH);
	 add(jScrollPane, BorderLayout.CENTER);

	 addWindowListener(new WindowAdapter() {
	 @Override
	 public void windowClosing(WindowEvent e) {
	 System.exit(0);
	 }
	 });
	 }
	}

	public class ByteToChar {

	 public static void main(String[] args) {
	 try {
	 final MainFrame frame = new MainFrame();

	 //读图片，放入文本框http://blog.csdn.net/xxb2008
	 File file = new File("C:\\Users\\feifei\\Desktop\\垃圾\\图片\\1.jpg");
	 BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
	 byte[] imgByte = new byte[(int) file.length()];
	 bis.read(imgByte);
	 String toStr = BytesToStr(imgByte);

	 frame.textPane.setText(toStr);
	 frame.jLabel.setText(toStr);

	
	 frame.button.addActionListener(new ActionListener() {
	 @Override
	 public void actionPerformed(ActionEvent e) {
	 try {
	 //写图片，文本框取值
	 String imgStr = frame.textPane.getText();
	 // imgStr = frame.jLabel.getText();
	 File newFile = new File("C:\\Users\\feifei\\Desktop\\垃圾\\图片\\2.jpg");
	 BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(newFile));
	 bos.write(StrToBytes(imgStr));
	 bos.flush();
	 bos.close();
	 } catch (IOException e1) {
	 e1.printStackTrace();
	 }
	 }
	 });

	 frame.setSize(400, 300);
	 frame.setVisible(true);

	
	 } catch (Exception e) {
	 e.printStackTrace();
	 }
	 }

	 public static String BytesToStr(byte[] target) {
	 StringBuffer buf = new StringBuffer();
	 for (int i = 0, j = target.length; i < j; i++) {
	 buf.append((char) target[i]);
	 }
	 return buf.toString();
	 }

	 public static byte[] StrToBytes(String str) {
	 byte[] buf = new byte[str.length()];
	 for (int i = 0; i < str.length(); i++) {
	 buf[i] = (byte) str.charAt(i);
	 }
	 return buf;
	 }
	}

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　图片转字符　　另存为图片　

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