From e44105da328e830ccc718a738e21b899b666d891 Mon Sep 17 00:00:00 2001 From: Aug <17674666882@163.com> Date: Tue, 11 Feb 2025 14:09:50 +0800 Subject: [PATCH] =?UTF-8?q?1=E3=80=81=E5=9B=BE=E7=89=87=E4=B8=8Epdf?= =?UTF-8?q?=E4=BA=92=E8=BD=AC=E5=AE=9E=E7=8E=B0?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- jeecg-boot-module-system/pom.xml | 58 ++++ .../java/org/jeecg/modules/test/imageDemo.java | 317 +++++++++++++++++++++ 2 files changed, 375 insertions(+) create mode 100644 jeecg-boot-module-system/src/main/java/org/jeecg/modules/test/imageDemo.java diff --git a/jeecg-boot-module-system/pom.xml b/jeecg-boot-module-system/pom.xml index 4ae1645..d5bab50 100644 --- a/jeecg-boot-module-system/pom.xml +++ b/jeecg-boot-module-system/pom.xml @@ -74,6 +74,64 @@ compile + + + com.tencentcloudapi + tencentcloud-speech-sdk-java + LATEST + + + + com.tencentcloudapi + tencentcloud-sdk-java + 4.0.11 + + + + + + org.apache.httpcomponents + httpmime + 4.5.7 + + + + com.alibaba + fastjson + 1.2.41 + + + + org.apache.poi + poi-ooxml + 3.16 + + + + + com.itextpdf + itextpdf + 5.5.13 + + + com.itextpdf + itext-asian + 5.2.0 + + + + + org.icepdf.os + icepdf-core + 6.1.2 + + + + com.aliyun.oss + aliyun-sdk-oss + 2.8.3 + + diff --git a/jeecg-boot-module-system/src/main/java/org/jeecg/modules/test/imageDemo.java b/jeecg-boot-module-system/src/main/java/org/jeecg/modules/test/imageDemo.java new file mode 100644 index 0000000..5ca00e1 --- /dev/null +++ b/jeecg-boot-module-system/src/main/java/org/jeecg/modules/test/imageDemo.java @@ -0,0 +1,317 @@ +package org.jeecg.modules.test; + +import com.itextpdf.text.*; +import com.itextpdf.text.pdf.PdfWriter; +import org.icepdf.core.pobjects.Page; +import sun.misc.BASE64Encoder; + +import org.icepdf.core.util.GraphicsRenderingHints; + +import javax.imageio.ImageIO; +import java.awt.image.BufferedImage; +import java.awt.image.RenderedImage; +import java.io.File; + +import java.io.*; +import java.text.SimpleDateFormat; +import java.util.*; +import java.util.List; + +public class imageDemo { + public static void main(String[] args) { + + //pdf转图片base64 + List codeList = pdf2imagebase64(); + for (String s : codeList) { + System.out.println(s); + } + +// //图片转pdf +// image2pdf(); + + +// System.out.println("start"); +// String imageBase64 = "base64"; +// String imagePath = "F:\\temp\\firsttest.png"; +// base64ToImage(imageBase64, imagePath); + + + } + + //pdf转图片base64(一张pdf转成多个base64图片) + public static List pdf2imagebase64(){ + + //获取当前时间 + SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); + Date now = new Date(); + String formattedDate = sdf.format(now); + + String pdfPath = "F:\\temp\\test.pdf";//pdf文件路径 + String imagePath = "F:\\temp\\";//图片文件路径 + String fileName = formattedDate + "image_";//图片文件名字 + + //文件流对象 + InputStream in = null; + + List pathList = new ArrayList<>();//图片路径列表 + List codeList = new ArrayList<>();//base64列表 + + Map map = new HashMap<>(); + + try{ + org.icepdf.core.pobjects.Document document = new org.icepdf.core.pobjects.Document(); + document.setFile(pdfPath); + float scale = 2.5f;//缩放比例 + float rotation = 0f;//旋转角度 + + //pdf转图片 + for (int i = 0; i < document.getNumberOfPages(); i++) { + BufferedImage image = (BufferedImage) + document.getPageImage(i, GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, rotation, scale); + RenderedImage rendImage = image; + File fileDir = new File(imagePath); + if (!fileDir.exists()) { + fileDir.mkdirs(); + } + String imgName = fileName + i + ".png";//图片名称 + String filePath = imagePath + imgName;//图片文件路径 + File file = new File(filePath); + ImageIO.write(rendImage, "png", file); + image.flush(); + pathList.add(filePath); + } + document.dispose();//关闭流 + + //图片转base64 + for (String path : pathList) { + String imgFile = path;// 待处理的图片 + + byte[] data = null; + String encode = null; // 返回Base64编码过的字节数组字符串 + BASE64Encoder encoder = new BASE64Encoder();// 对字节数组Base64编码 + + // 读取图片字节数组 + in = new FileInputStream(imgFile); + data = new byte[in.available()]; + in.read(data); + encode = encoder.encode(data); + codeList.add(encode); + } + + }catch (Exception e){ + e.printStackTrace(); + }finally { + try{ + if(null != in){ + in.close();//关闭文件流 + } + }catch (Exception e){ + e.printStackTrace(); + } + + } + return codeList; + } + + //图片转pdf + public static String image2pdf(){ + + //获取当前时间 + SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); + Date now = new Date(); + String formattedDate = sdf.format(now); + System.out.println(formattedDate); + + String images = "F:\\temp\\image_0.png;F:\\temp\\image_1.png;F:\\temp\\image_2.png";//图片文件地址 + String pdfPath = "F:\\temp\\"+formattedDate+".pdf"; // 输出pdf文件路径 + String[] imageList = images.split(";"); + + try{ + ArrayList imageUrllist = new ArrayList(); //图片list集合 + for (int i=0; i imageUrllist, String mOutputPdfFileName) { + Document doc = new Document(PageSize.A4, 0, 0, 0, 0); //new一个pdf文档 + try { + PdfWriter.getInstance(doc, new FileOutputStream(mOutputPdfFileName)); //pdf写入 + doc.open();//打开文档 + for (int i = 0; i < imageUrllist.size(); i++) { //循环图片List，将图片加入到pdf中 + doc.newPage(); //在pdf创建一页 + Image png1 = Image.getInstance(imageUrllist.get(i)); //通过文件路径获取image + float heigth = png1.getHeight(); + float width = png1.getWidth(); + int percent = getPercent2(heigth, width); + png1.setAlignment(Image.MIDDLE); + png1.scalePercent(percent + 3);// 表示是原来图像的比例; + doc.add(png1); + } + doc.close(); + } catch (FileNotFoundException e) { + e.printStackTrace(); + } catch (DocumentException e) { + e.printStackTrace(); + } catch (IOException e) { + e.printStackTrace(); + } + + File mOutputPdfFile = new File(mOutputPdfFileName); //输出流 + if (!mOutputPdfFile.exists()) { + mOutputPdfFile.deleteOnExit(); + return null; + } + return mOutputPdfFile; //反回文件输出流 + } + public static int getPercent2(float h, float w) { + int p = 0; + float p2 = 0.0f; + p2 = 530 / w * 100; + p = Math.round(p2); + return p; + } + /******************************************************************************************************************/ + //图片转base64 + public static String imageToBase64(String imgPath){ + String imgFile = imgPath;// 待处理的图片 + InputStream in = null; + byte[] data = null; + + String encode = null; // 返回Base64编码过的字节数组字符串 + // 对字节数组Base64编码 + BASE64Encoder encoder = new BASE64Encoder(); + try { + // 读取图片字节数组 + in = new FileInputStream(imgFile); + data = new byte[in.available()]; + in.read(data); + encode = encoder.encode(data); + } catch (IOException e) { + e.printStackTrace(); + } finally { + try { + in.close(); + } catch (IOException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + } + return encode; + } + + //base64转图片 + public static boolean base64ToImage(String imgStr, String imgFilePath) {// 对字节数组字符串进行Base64解码并生成图片 + if (imgStr == null) // 图像数据为空 + return false; + // 解密 + try { + // 解密 + //Base64.Decoder decoder = Base64.getDecoder(); + Base64.Decoder decoder = Base64.getMimeDecoder(); + // 去掉base64前缀 data:image/png;base64, + imgStr = imgStr.substring(imgStr.indexOf(",", 1) + 1, imgStr.length()); + byte[] b = decoder.decode(imgStr); + // 处理数据 + for (int i = 0; i < b.length; ++i) { + if (b[i] < 0) { + b[i] += 256; + } + } + // 保存图片 + OutputStream out = new FileOutputStream(imgFilePath); + out.write(b); + out.flush(); + out.close(); + // 返回图片的相对路径 = 图片分类路径+图片名+图片后缀 + return true; + } catch (IOException e) { + e.printStackTrace(); + return false; + } + } + + //图片转pdf + public static void imgChangePDF(String imageUrl, String target) { + //创建一个文档对象 + Document doc = new Document(); + try { + //定义输出文件的位置 + PdfWriter.getInstance(doc, new FileOutputStream(target)); + //开启文档 + doc.open(); + + //路径 + Image img = Image.getInstance(imageUrl); + //获得宽高 + Float h = img.getHeight(); + Float w = img.getWidth(); + //统一压缩 + Integer percent = getPercent(h, w); + //图片居中 + img.setAlignment(Image.MIDDLE); + //百分比显示图 + img.scalePercent(percent); + //设置高和宽的比例 + doc.add(img); + + // 关闭文档 + if(doc != null){ + doc.close(); + } + } catch (IOException e) { + e.printStackTrace(); + } catch (BadElementException e) { + e.printStackTrace(); + } catch (DocumentException e) { + e.printStackTrace(); + } + } + + //压缩 + public static Integer getPercent(Float h,Float w) + { + Integer g=0; + Float g2=0.0f; + g2=480/w*100; + g=Math.round(g2); + return g; + } + + /******************************************************************************************************************/ + public static void pdf2Pic(String pdfPath, String path, String fileName) throws Exception { + org.icepdf.core.pobjects.Document document = new org.icepdf.core.pobjects.Document(); + document.setFile(pdfPath); + //缩放比例 + float scale = 2.5f; + //旋转角度 + float rotation = 0f; + for (int i = 0; i < document.getNumberOfPages(); i++) { + BufferedImage image = (BufferedImage) + document.getPageImage(i, GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, rotation, scale); + RenderedImage rendImage = image; + try { + File fileDir = new File(path); + if (!fileDir.exists()) { + fileDir.mkdirs(); + } + String imgName = fileName + i + ".png"; + File file = new File(path + imgName); + ImageIO.write(rendImage, "png", file); + } catch (IOException e) { + e.printStackTrace(); + } + image.flush(); + } + document.dispose(); + } + + +}