{"id":5537,"date":"2025-05-28T16:04:57","date_gmt":"2025-05-28T08:04:57","guid":{"rendered":"https:\/\/support.fuxinsoft.cn\/?p=5537"},"modified":"2025-12-09T18:00:05","modified_gmt":"2025-12-09T10:00:05","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8pdf-sdk%e5%b0%86%e5%a4%a7%e5%9e%8b%e5%9b%be%e7%ba%b8%e6%96%87%e4%bb%b6%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%88%86%e5%9d%97%e7%9a%84%e5%9b%be%e7%89%87%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/support.fuxinsoft.cn\/?p=5537","title":{"rendered":"\u5982\u4f55\u5229\u7528PDF SDK\u5c06\u5927\u578b\u56fe\u7eb8\u5206\u5272\u4e3a\u56fe\u7247\u5206\u5757\u4ee5\u63d0\u5347\u6e32\u67d3\u6027\u80fd\uff1f"},"content":{"rendered":"\n

\u5f53\u7528\u6237\u6d4f\u89c8\u5927\u578b\u56fe\u7eb8PDF\u6587\u4ef6\u65f6\uff0c\u5e38\u4f1a\u9047\u5230\u6e32\u67d3\u7f13\u6162\u6216\u65e0\u6cd5\u6253\u5f00\u7684\u95ee\u9898\u3002\u901a\u8fc7\u5206\u5757\u6e32\u67d3\u6280\u672f\uff0c\u53ef\u4ee5\u5c06\u539f\u59cbPDF\u6587\u4ef6\u8f6c\u6362\u4e3a\u7531\u591a\u5f20\u56fe\u7247\u62fc\u63a5\u800c\u6210\u7684\u65b0PDF\u6587\u4ef6\uff0c\u4ece\u800c\u663e\u8457\u63d0\u5347\u6e32\u67d3\u901f\u5ea6\u3002\u8be5\u65b9\u6cd5\u8fd8\u652f\u6301\u81ea\u5b9a\u4e49\u6e05\u6670\u5ea6\u8c03\u8282\u548c\u6297\u952f\u9f7f\u7b49\u56fe\u50cf\u5904\u7406\u6548\u679c\u3002\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n

public splitImage throws PDFException {
    PDFDoc doc = new PDFDoc(\"68699708#01.pdf\");
    {
        doc.load(null);
        PDFDoc docNew = new PDFDoc();
        docNew.load(null);
        int step_H = 50;
        int step_W = 100;
        for (int i = 0; i < doc.getPageCount(); i++)
        {
            PDFPage page = new PDFPage(doc.getPage(i));
            {
                page.startParse(0, null, true);
                int rotation = page.getRotation();
                \/\/  page.Normalize();
                page.startParse(0, null, false);
                float pageW = page.getWidth();
                float pageH = page.getHeight();
                \/\/
                PDFPage pageNew = docNew.insertPage(docNew.getPageCount(), pageW, pageH);
                pageNew.startParse(0, null, true);
                for (int row = 0; row < page.getHeight() \/ step_H; row++)
                {
                    for (int col = 0; col < page.getWidth() \/ step_W; col++)
                    {
                        float left = col * step_W;
                        float bottom = row * step_H;
                        float right = (col + 1) * step_W > pageW ? pageW : (col + 1) * step_W;
                        float top = (row + 1) * step_H > pageH ? pageH : (row + 1) * step_H;
                        RectF rect = new RectF(left, bottom, right, top);
                        Bitmap bitmap = renderABitmapAtRectF<\/em>(page, rect, 400, 400);
                        Image image = new Image();
                        {
                            image.addFrame(bitmap);
                            rect  = new RectF(left, bottom, right, top);
                            pageNew.addImage(image, 0, new PointF(rect.getLeft(), rect.getBottom()), rect.width(), rect.height(), false);
                        }
                    }
                    pageNew.generateContent();
                  
                }
            }
        }
        docNew.saveAs(\"test17.pdf\", 0);
    }
   Library.release<\/em>();
}
static Bitmap renderABitmapAtRectF(PDFPage page, RectF rectf, int dpiX, int dpiY) throws PDFException {
    float w = rectf.width();
    float h = rectf.height();
    float proX = (float)dpiX \/ 72;
    float proY = (float)dpiY \/ 72;
    int width = (int)(page.getWidth() * proX);
    int height = (int)(page.getHeight() * proY);
    \/\/float v = rectf.getLeft() * proX;
    rectf.setLeft(rectf.getLeft() * proX);
    \/\/rectf.right = (rectf.getRight() * proX);
    rectf.setRight(rectf.getRight() * proX);
    \/\/rectf.bottom = (rectf.bottom * proY);
    rectf.setBottom(rectf.getBottom() * proY);
    \/\/rectf.top = (rectf.top * proY);
    rectf.setTop(rectf.getTop() * proY);

    Matrix2D matrix = page.getDisplayMatrix(-1 * (int)rectf.getLeft(), -1 * (int)(height - rectf.getTop()), width, height, 0);
    Bitmap bitmap=new Bitmap((int)(rectf.width()), (int)(rectf.height()), e_DIBRgb<\/em>, null, 0);
    bitmap.fillRect(0xFFFFFFFF,null);

    Renderer render = new Renderer(bitmap, false);
   \/* render.setRenderEnhanceThinLines(true);
    render.setRenderPathThinLine(true);*\/
    \/\/\u5f00\u59cb\u6e32\u67d3
    render.startRender(page, matrix, null);
    return bitmap;
}<\/pre>\n\n\n\n
\u5b9e\u73b0\u539f\u7406\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n
    \n
  1. \u9875\u9762\u5206\u5272<\/strong>
    \u5c06\u6bcf\u9875\u6309\u56fa\u5b9a\u5c3a\u5bf8\uff08\u5bbd\u5ea6step_W=100\u50cf\u7d20\uff0c\u9ad8\u5ea6step_H=50\u50cf\u7d20\uff09\u5212\u5206\u4e3a\u7f51\u683c\u533a\u57df\uff0c\u6bcf\u4e2a\u533a\u57df\u5b9a\u4e49\u4e3a\u77e9\u5f62\u5757\uff08RectF\uff09\u3002<\/li>\n\n\n\n
  2. \u56fe\u50cf\u5757\u6e32\u67d3<\/strong>
    \u5bf9\u6bcf\u4e2a\u77e9\u5f62\u5757\u8c03\u7528renderABitmapAtRectF\u65b9\u6cd5\uff0c\u5c06PDF\u9875\u9762\u5c40\u90e8\u5185\u5bb9\u6e32\u67d3\u4e3a\u4f4d\u56fe\uff08Bitmap\uff09\u3002<\/li>\n\n\n\n
  3. PDF\u91cd\u6784<\/strong>
    \u5c06\u6240\u6709\u751f\u6210\u7684\u4f4d\u56fe\u6309\u539f\u59cb\u5750\u6807\u4f4d\u7f6e\u63d2\u5165\u5230\u65b0PDF\u7684\u5bf9\u5e94\u9875\u9762\u4e2d\uff0c\u6700\u7ec8\u751f\u6210\u4f18\u5316\u540e\u7684PDF\u6587\u4ef6\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
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