package com.platform.common.utils;@b@@b@import org.apache.pdfbox.Loader;@b@import org.apache.pdfbox.pdmodel.*;@b@import org.apache.pdfbox.pdmodel.font.PDType1Font;@b@import org.apache.pdfbox.pdmodel.font.Standard14Fonts;@b@import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;@b@import org.apache.pdfbox.util.Matrix;@b@@b@import java.awt.*;@b@import java.io.File;@b@import java.io.IOException;@b@@b@/**@b@ * @author 李鹏军@b@ */@b@public class PdfUtils {@b@    /**@b@     * pdf添加文字水印@b@     *@b@     * @param filePath 原PDF位置@b@     * @param attrName PDF文件名称@b@     * @param text     要添加的水印@b@     * @return 添加水印的文件路径@b@     * @throws Exception Exception@b@     */@b@    public static String addWatermark(String filePath, String attrName, String text) {@b@        String result = filePath + File.separator + "autoMail" + File.separator + attrName;@b@        File file = new File(filePath + attrName);@b@        try {@b@            float formWidth = 35f;@b@            float formHeight = 35f;@b@            float fontSize = 25;@b@            int length1 = 14;@b@            int length2 = 22;@b@            int length3 = 46;@b@            int length4 = 62;@b@            if (text.length() <= length1) {@b@                formWidth = 2.4f;@b@                formHeight = 2.4f;@b@                fontSize = 50;@b@            } else if (text.length() <= length2) {@b@                formWidth = 4;@b@                formHeight = 4;@b@                fontSize = 50;@b@            } else if (text.length() <= length3) {@b@                formWidth = 10;@b@                formHeight = 10;@b@                fontSize = 40;@b@            } else if (text.length() <= length4) {@b@                formWidth = 20;@b@                formHeight = 20;@b@            }@b@            PDDocument document = Loader.loadPDF(file);@b@            document.setAllSecurityToBeRemoved(true);@b@            for (PDPage page : document.getPages()) {@b@                float width = page.getBBox().getWidth();@b@                float height = page.getBBox().getHeight();@b@@b@                PDPageContentStream cs = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true, true);@b@                //pdf扩展图形对象@b@                PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();@b@                // 透明度@b@                graphicsState.setNonStrokingAlphaConstant(0.2f);@b@                graphicsState.setAlphaSourceFlag(true);@b@                cs.setGraphicsStateParameters(graphicsState);@b@                cs.setNonStrokingColor(Color.red);@b@                cs.beginText();@b@                cs.setFont(new PDType1Font(Standard14Fonts.FontName.HELVETICA_BOLD), fontSize);@b@                // 获取旋转实例@b@                cs.setTextMatrix(Matrix.getRotateInstance(Math.toRadians(45), width / formWidth, height / formHeight));@b@                cs.showText(text);@b@                cs.endText();@b@                cs.close();@b@            }@b@            document.save(result);@b@            document.close();@b@        } catch (IOException e) {@b@            e.printStackTrace();@b@        }@b@        return result;@b@    }@b@@b@    /**@b@     * pdf去除水印@b@     */@b@    public static boolean removeWatermark(File file) {@b@        try {@b@            PDDocument document = Loader.loadPDF(file);@b@            // 移除加密@b@            document.setAllSecurityToBeRemoved(true);@b@            PDPageTree pages = document.getPages();@b@            for (PDPage page : pages) {@b@                PDResources resources = page.getResources();@b@                resources.getExtGStateNames().forEach(ext -> {@b@                    PDExtendedGraphicsState gState = resources.getExtGState(ext);@b@                    gState.setNonStrokingAlphaConstant(0.0f);@b@                });@b@            }@b@            String folderPath = file.getParent();@b@            String fileName = file.getName().substring(0, file.getName().lastIndexOf("."));@b@            document.save(folderPath + File.separator + fileName + "_无水印" + ".pdf");@b@            document.close();@b@            return true;@b@        } catch (IOException ex) {@b@            ex.printStackTrace();@b@            return false;@b@        }@b@    }@b@@b@    /**@b@     * pdf去除加密@b@     */@b@    public static boolean removePwd(File file) {@b@        try {@b@            PDDocument document = Loader.loadPDF(file);@b@            // 移除加密@b@            document.setAllSecurityToBeRemoved(true);@b@            String folderPath = file.getParent();@b@            String fileName = file.getName().substring(0, file.getName().lastIndexOf("."));@b@            document.save(folderPath + File.separator + fileName + "_无加密" + ".pdf");@b@            document.close();@b@            return true;@b@        } catch (IOException ex) {@b@            ex.printStackTrace();@b@            return false;@b@        }@b@    }@b@@b@    public static void main(String[] args) {@b@        removeWatermark(new File("/Users/pengjun/828.pdf"));@b@    }@b@}