atitit.验证码识别step2——剪贴板ClipBoard copy image图像 attilax总结
剪贴板（ClipBoard）是内存中的一块区域，是Windows内置的一个非常有用的工具，通过小小的剪贴板，架起了一座彩桥，使得在各种应用程序之间，传递和共享信息成为可
系统剪切板一般支持String文本类型和Image图像类型：支持自定义剪切板数据类型
常见的剪切板数据类型
作者:: 老哇的爪子 Attilax 艾龙， EMAIL:1466519819@qq.com
转载请注明来源： http://blog.csdn.net/attilax
/**
* The <code>DataFlavor</code> representing a Java Unicode String class,
* where:
* <pre>
* representationClass = java.lang.String
* mimeType = "application/x-java-serialized-object"
* </pre>
*/
public static final DataFlavor stringFlavor = createConstant(java.lang.String.class, "Unicode String");
/**
* The <code>DataFlavor</code> representing a Java Image class,
* where:
* <pre>
* representationClass = java.awt.Image
* mimeType = "image/x-java-image"
* </pre>
*/
public static final DataFlavor imageFlavor = createConstant("image/x-java-image; class=java.awt.Image", "Image");
/**
* The <code>DataFlavor</code> representing plain text with Unicode
* encoding, where:
* <pre>
* representationClass = InputStream
* mimeType = "text/plain; charset=unicode"
* </pre>
* This <code>DataFlavor</code> has been <b>deprecated</b> because
* (1) Its representation is an InputStream, an 8-bit based representation,
* while Unicode is a 16-bit character set; and (2) The charset "unicode"
* is not well-defined. "unicode" implies a particular platform’s
* implementation of Unicode, not a cross-platform implementation.
*
* @deprecated as of 1.3. Use <code>DataFlavor.getReaderForText(Transferable)</code>
* instead of <code>Transferable.getTransferData(DataFlavor.plainTextFlavor)</code>.
*/
@Deprecated
public static final DataFlavor plainTextFlavor = createConstant("text/plain; charset=unicode; class=java.io.InputStream", "Plain Text");
/**
* A MIME Content-Type of application/x-java-serialized-object represents
* a graph of Java object(s) that have been made persistent.
*
* The representation class associated with this <code>DataFlavor</code>
* identifies the Java type of an object returned as a reference
* from an invocation <code>java.awt.datatransfer.getTransferData</code>.
*/
public static final String javaSerializedObjectMimeType = "application/x-java-serialized-object";
/**
* To transfer a list of files to/from Java (and the underlying
* platform) a <code>DataFlavor</code> of this type/subtype and
* representation class of <code>java.util.List</code> is used.
* Each element of the list is required/guaranteed to be of type
* <code>java.io.File</code>.
*/
public static final DataFlavor javaFileListFlavor = createConstant("application/x-java-file-list;class=java.util.List", null);
/**
* To transfer a reference to an arbitrary Java object reference that
* has no associated MIME Content-type, across a <code>Transferable</code>
* interface WITHIN THE SAME JVM, a <code>DataFlavor</code>
* with this type/subtype is used, with a <code>representationClass</code>
* equal to the type of the class/interface being passed across the
* <code>Transferable</code>.
* <p>
* The object reference returned from
* <code>Transferable.getTransferData</code> for a <code>DataFlavor</code>
* with this MIME Content-Type is required to be
* an instance of the representation Class of the <code>DataFlavor</code>.
*/
public static final String javaJVMLocalObjectMimeType = "application/x-java-jvm-local-objectref";
/**
* In order to pass a live link to a Remote object via a Drag and Drop
* <code>ACTION_LINK</code> operation a Mime Content Type of
* application/x-java-remote-object should be used,
* where the representation class of the <code>DataFlavor</code>
* represents the type of the <code>Remote</code> interface to be
* transferred.
*/
public static final String javaRemoteObjectMimeType = "application/x-java-remote-object";
/**
prj.atibrow
//获取粘贴板图片
Image image = null;
try {
image = ClipboardUtil.getImageFromClipboard();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
/**
* 从剪切板获得图片。
*/
public static Image 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 (Image) cc.getTransferData(DataFlavor.imageFlavor);
return null;
}
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