修改数据

blade-service/blade-manager/src/main/java/org/springblade/manager/utils/PdfConvertA4Utils.java

@@ -1,65 +0,0 @@
-package org.springblade.manager.utils;
-
-import com.itextpdf.text.Document;
-import com.itextpdf.text.PageSize;
-import com.itextpdf.text.pdf.PdfContentByte;
-import com.itextpdf.text.pdf.PdfImportedPage;
-import com.itextpdf.text.pdf.PdfReader;
-import com.itextpdf.text.pdf.PdfWriter;
-
-import java.io.FileOutputStream;
-
-public class PdfConvertA4Utils {
-    /**
-     * @Param source 源文件
-     * @Param target 转换后文件
-     * @Description 将PDF转为A4格式
-     * @Date: 2021/4/25
-     **/
-    public static void convert(String source, String target) {
-        try {
-            PdfReader pdfReader = new PdfReader(source);
-            Document doc = new Document();
-            PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(target));
-            doc.open();
-            PdfContentByte cb = writer.getDirectContent();
-            for(int i = 1; i <= pdfReader.getNumberOfPages(); i++){
-                PdfImportedPage page = writer.getImportedPage(pdfReader, i);
-                float width = page.getWidth();
-                float height = page.getHeight();
-                if(height > width) {
-                    //横向
-                    doc.setPageSize(PageSize.A4);
-                    doc.newPage();
-                    //计算比例
-                    float widthScale = getWidthScale(width);
-                    float heightScale = getHeightScale(height);
-                    //addTemplate方法中有6个float类型的参数，是通过二维图像仿射变换得到的
-                    //cb.addTemplate(page, new AffineTransform(widthScale, 0, 0, heightScale,0,0));
-                    //二维图像仿射变换:https://www.cnblogs.com/v2m_/archive/2013/05/09/3070187.html
-                    cb.addTemplate(page, widthScale, 0, 0, heightScale,0,0);
-                } else {
-                    //纵向
-                    doc.setPageSize(new com.itextpdf.text.Rectangle(PageSize.A4.getHeight(), PageSize.A4.getWidth()));
-                    doc.newPage();
-                    float widthScale = getWidthScale(height);
-                    float heightScale = getHeightScale(width);
-                    cb.addTemplate(page, widthScale, 0, 0, heightScale,0,0);
-                }
-            }
-            doc.close();
-        } catch (Exception ex) {
-            ex.printStackTrace();
-        }
-    }
-    private static float getWidthScale(float width) {
-        float scale = PageSize.A4.getWidth() / width;
-        return scale;
-    }
-
-    private static float getHeightScale(float height) {
-        float scale = PageSize.A4.getHeight() / height;
-        return scale;
-    }
-
-}