所需jar包import java.awt.Rectangle;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.RandomAccessFile;import java.lang.reflect.Method;import java.nio.MappedByteBuffer;import java.nio.channels.FileChannel;import java.security.AccessController;import java.security.PrivilegedAction;import com.lowagie.text.Document;import com.lowagie.text.DocumentException;i
