package lilosoft.weixin;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.ImageIO;
import org.icepdf.core.pobjects.Document;
import org.icepdf.core.util.GraphicsRenderingHints;
public class test {
/**
* 将pdf文件转成HDjpg图片
*
* @param filePath
* @param path
*/
public static void pdfToHDjpg(String filePath, String path) {
try {
Document document = new Document();
document.setFile(filePath);
//缩放比例
float scale = 2.5f;
//旋转角度
float rotation = 0f;
List<BufferedImage> piclist = new ArrayList<BufferedImage>();
for (int i = 0; i < document.getNumberOfPages(); i++) {
BufferedImage image = (BufferedImage)
document.getPageImage(i, GraphicsRenderingHints.SCREEN,
org.icepdf.core.pobjects.Page.BOUNDARY_CROPBOX, rotation, scale);
image.flush();
piclist.add(image);
}
yPic(piclist, path);
document.dispose();
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
/**
* 将宽度相同的图片，竖向追加在一起 ##注意：宽度必须相同
*
* @param piclist 文件流数组
* @param outPath 输出路径
*/
public static void yPic(List<BufferedImage> piclist, String outPath) {// 纵向处理图片
if (piclist == null || piclist.size() <= 0) {
System.out.println("图片数组为空!");
return;
}
try {
int height = 0, // 总高度
width = 0, // 总宽度
_height = 0, // 临时的高度 , 或保存偏移高度
__height = 0, // 临时的高度，主要保存每个高度
picNum = piclist.size();// 图片的数量
int[] heightArray = new int[picNum]; // 保存每个文件的高度
BufferedImage buffer = null; // 保存图片流
List<int[]> imgRGB = new ArrayList<int[]>(); // 保存所有的图片的RGB
int[] _imgRGB; // 保存一张图片中的RGB数据
for (int i = 0; i < picNum; i++) {
buffer = piclist.get(i);
heightArray[i] = _height = buffer.getHeight();// 图片高度
if (i == 0) {
width = buffer.getWidth();// 图片宽度
}
height += _height; // 获取总高度
_imgRGB = new int[width * _height];// 从图片中读取RGB
_imgRGB = buffer
.getRGB(0, 0, width, _height, _imgRGB, 0, width);
imgRGB.add(_imgRGB);
}
_height = 0; // 设置偏移高度为0
// 生成新图片
BufferedImage imageResult = new BufferedImage(width, height,
BufferedImage.TYPE_INT_BGR);
for (int i = 0; i < picNum; i++) {
__height = heightArray[i];
if (i != 0)
_height += __height; // 计算偏移高度
imageResult.setRGB(0, _height, width, __height, imgRGB.get(i),
0, width); // 写入流中
}
File outFile = new File(outPath);
ByteArrayOutputStream out = new ByteArrayOutputStream();
ImageIO.write(imageResult, "jpg", out);// 写图片
byte[] b = out.toByteArray();
FileOutputStream output = new FileOutputStream(outFile);
output.write(b);
out.close();
output.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String filePath = "C:\\Users\\ASUS\\Desktop\\1111.pdf";
pdfToHDjpg(filePath, "C:\\Users\\ASUS\\Desktop\\b.jpg");
}
}
