Java实现系统粘贴版

java的awt自带对系统粘贴板的访问,常配合自定义键盘快捷键使用

//引入依赖
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Reader;

//从剪切板获得文字
public static String getSysClipboardText() {
 String ret = "";
 Clipboard sysClip = Toolkit.getDefaultToolkit().getSystemClipboard();
 // 获取剪切板中的内容
 Transferable clipTf = sysClip.getContents(null);
 if (clipTf != null) {
  // 检查内容是否是文本类型
  if (clipTf.isDataFlavorSupported(DataFlavor.stringFlavor)) {
   try {
    ret = (String) clipTf.getTransferData(DataFlavor.stringFlavor);
   } catch (Exception e) {
    e.printStackTrace();
   }
  }
 }
 return ret;
}

//将字符串复制到剪切板
public static void setSysClipboardText(String writeMe) {
 Clipboard clip = Toolkit.getDefaultToolkit().getSystemClipboard();
 Transferable tText = new StringSelection(writeMe);
 clip.setContents(tText, null);
}

//从剪切板获得图片
public static BufferedImage getImageFromClipboard() throws Exception {
 Clipboard sysc = Toolkit.getDefaultToolkit().getSystemClipboard();
 Transferable cc = sysc.getContents(null);
 if (cc == null)
  return null;
 else if (cc.isDataFlavorSupported(DataFlavor.imageFlavor)) {
  return (BufferedImage) cc.getTransferData(DataFlavor.imageFlavor);
 }
 return null;
}

//复制图片到剪切板
public static void setClipboardImage(final BufferedImage image) throws Exception {
 Transferable trans = new Transferable() {
  public DataFlavor[] getTransferDataFlavors() {
   return new DataFlavor[] { DataFlavor.imageFlavor };
  }

  public boolean isDataFlavorSupported(DataFlavor flavor) {
   return DataFlavor.imageFlavor.equals(flavor);
  }
 public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
  if (isDataFlavorSupported(flavor))
   return image;
   throw new UnsupportedFlavorException(flavor);
  }
 };
 Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans, null);
}

//通过流获取，可读取图文混合
 public void getImageAndTextFromClipboard() throws Exception {
  Clipboard sysClip = Toolkit.getDefaultToolkit().getSystemClipboard();
  Transferable clipTf = sysClip.getContents(null);
  DataFlavor[] dataList = clipTf.getTransferDataFlavors();
  int wholeLength = 0;
  for (int i = 0; i < dataList.length; i++) {
   DataFlavor data = dataList[i];
   if (data.getSubType().equals("rtf")) {
    Reader reader = data.getReaderForText(clipTf);
    OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("d:\\test.rtf"));
    char[] c = new char[1024];
    int leng = -1;
    while ((leng = reader.read(c)) != -1) {
     osw.write(c, wholeLength, leng);
    }
    osw.flush();
    osw.close();
   }
  }
 }