1、图片与pdf互转实现

jeecg-boot-module-system/pom.xml

@@ -74,6 +74,64 @@
             <scope>compile</scope>
         </dependency>
 
+		<!--语音合成-->
+		<dependency>
+			<groupId>com.tencentcloudapi</groupId>
+			<artifactId>tencentcloud-speech-sdk-java</artifactId>
+			<version>LATEST</version>
+		</dependency>
+		<!-- https://mvnrepository.com/artifact/com.tencentcloudapi/tencentcloud-sdk-java -->
+		<dependency>
+			<groupId>com.tencentcloudapi</groupId>
+			<artifactId>tencentcloud-sdk-java</artifactId>
+			<version>4.0.11</version>
+		</dependency>
+
+		<!--excel导入导出-->
+		<!-- 文件上传 -->
+		<dependency>
+			<groupId>org.apache.httpcomponents</groupId>
+			<artifactId>httpmime</artifactId>
+			<version>4.5.7</version>
+		</dependency>
+		<!-- JSON -->
+		<dependency>
+			<groupId>com.alibaba</groupId>
+			<artifactId>fastjson</artifactId>
+			<version>1.2.41</version>
+		</dependency>
+		<!-- POI -->
+		<dependency>
+			<groupId>org.apache.poi</groupId>
+			<artifactId>poi-ooxml</artifactId>
+			<version>3.16</version>
+		</dependency>
+
+		<!--pdf添加水印、文字、图片、印章-->
+		<dependency>
+			<groupId>com.itextpdf</groupId>
+			<artifactId>itextpdf</artifactId>
+			<version>5.5.13</version>
+		</dependency>
+		<dependency>
+			<groupId>com.itextpdf</groupId>
+			<artifactId>itext-asian</artifactId>
+			<version>5.2.0</version>
+		</dependency>
+
+		<!--pdf转图片-->
+		<dependency>
+			<groupId>org.icepdf.os</groupId>
+			<artifactId>icepdf-core</artifactId>
+			<version>6.1.2</version>
+		</dependency>
+
+		<dependency>
+			<groupId>com.aliyun.oss</groupId>
+			<artifactId>aliyun-sdk-oss</artifactId>
+			<version>2.8.3</version>
+		</dependency>
+
     </dependencies>
 
 	<build>

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<String> 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<String> pathList = new ArrayList<>();//图片路径列表
+        List<String> codeList = new ArrayList<>();//base64列表
+
+        Map<String, Object> 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<String> imageUrllist = new ArrayList<String>(); //图片list集合
+            for (int i=0; i<imageList.length; i++) {
+                imageUrllist.add(imageList[i]);
+            }
+
+            File file = Pdf(imageUrllist, pdfPath);//生成pdf
+            file.createNewFile();
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+
+        return pdfPath;
+    }
+    public static File Pdf(ArrayList<String> 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();
+    }
+
+
+}