java 使用jacob实现word、excle、ppt、图片转pdf

桃扇骨 2023-10-05 12:51 53阅读 0赞

## java 使用jacob实现word、excle、ppt、图片转pdf ##

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## IDEA Maven 微服务项目示例 ##

示例：

## 步骤： ##

### 1.jarcob jar包、插件下载 ###

SaveAsPDFandXPS 下载地址：  
http://www.microsoft.com/zh-cn/download/details.aspx?id=7  
（若访问不了，百度搜索SaveAsPDFandXPS）  
jacob 包下载地址：  
http://sourceforge.net/projects/jacob-project/

### 2.jacob jar包和dll存放路径 ###

下载 jacob 解压后存放路径：  
jacob.jar 放在 C:\\Program Files\\Java\\jdk1.8.0\_171\\jre\\lib\\ext目录下  
jacob.dll 放在 C:\\Program Files\\Java\\jdk1.8.0\_171\\jre\\bin 目录下

### 3. 项目里src/main/resources/lib 下放jar包![20201030144009614.png_pic_center][] ###

### 五、pom文件中添加依赖 ###

<dependency>
      <groupId>com.jacob</groupId>
      <artifactId>jacob</artifactId>
      <version>1.20</version>
      <scope>system</scope>
      <systemPath>${basedir}/src/main/resources/lib/jacob.jar</systemPath>
    </dependency>

### 六、代码实现 ###

import java.io.File;
    
    import com.jacob.activeX.ActiveXComponent;
    import com.jacob.com.ComFailException;
    import com.jacob.com.ComThread;
    import com.jacob.com.Dispatch;
    import com.jacob.com.Variant;
    
    public class ToPDF {
        
    
        private static final int wdFormatPDF = 17; // PDF 格式
        private static final int xlTypePDF = 0;  // xls格式
    
        public boolean toPDF(String sfileName, String toFileName) {
        
            System.out.println("------开始转换------");
            String suffix = getFileSufix(sfileName);
            File file = new File(sfileName);
            if (!file.exists()) {
        
                System.out.println("文件不存在！");
                return false;
            }
            if (suffix.equals("pdf")) {
        
                System.out.println("PDF not need to convert!");
                return false;
            }
    
            if (suffix.equals("doc") || suffix.equals("docx") || suffix.equals("txt")) {
        
                return word2PDF(sfileName, toFileName);
            } else if (suffix.equals("ppt") || suffix.equals("pptx")) {
        
                return ppt2PDF(sfileName, toFileName);
            } else if (suffix.equals("xls") || suffix.equals("xlsx")) {
        
                return excel2PDF(sfileName, toFileName);
            } else {
        
                System.out.println("文件格式不支持转换!");
                return false;
            }
    
        }
    　　 //截取文件后缀方法
        public static String getFileSufix(String fileName) {
        
            int splitIndex = fileName.lastIndexOf(".");
            return fileName.substring(splitIndex + 1);
        }
    　　//转换word文档
        public boolean word2PDF(String sfileName, String toFileName) {
        
            long start = System.currentTimeMillis();
            ActiveXComponent app = null;
            Dispatch doc = null;
            boolean result = true;
    
            try {
        
                app = new ActiveXComponent("Word.Application");
                app.setProperty("Visible", new Variant(false));
                Dispatch docs = app.getProperty("Documents").toDispatch();
                doc = Dispatch.call(docs, "Open", sfileName).toDispatch();
                System.out.println("打开文档..." + sfileName);
                System.out.println("转换文档到 PDF..." + toFileName);
                File tofile = new File(toFileName);
                if (tofile.exists()) {
        
                    tofile.delete();
                }
                Dispatch.call(doc, "SaveAs", toFileName, wdFormatPDF);
                long end = System.currentTimeMillis();
                System.out.println("转换完成..用时：" + (end - start) + "ms.");
    
                result = true;
            } catch (Exception e) {
        
                // TODO: handle exception
    
                System.out.println("========Error:文档转换失败：" + e.getMessage());
                result = false;
            } finally {
        
                Dispatch.call(doc, "Close", false);
                System.out.println("关闭文档");
                if (app != null) {
        
                    app.invoke("Quit", new Variant[] {
        });
                }
            }
    
            ComThread.Release();
    
            return result;
        }
        //转换excel文档
        public boolean excel2PDF(String inputFile, String pdfFile) {
        
            ActiveXComponent app = null;
            Dispatch excel = null;
            boolean result = true;
            try {
        
                
                app = new ActiveXComponent("Excel.Application");
                app.setProperty("Visible", false);
                Dispatch excels = app.getProperty("Workbooks").toDispatch();
                excel = Dispatch.call(excels, "Open", inputFile, false, true).toDispatch();
                Dispatch.call(excel, "ExportAsFixedFormat", xlTypePDF, pdfFile);
                System.out.println("打开文档..." + inputFile);
                System.out.println("转换文档到 PDF..." + pdfFile);
                result = true;
            } catch (Exception e) {
        
                result = false;
            } finally {
        
                if (excel != null) {
        
                    Dispatch.call(excel, "Close");
                }
                if (app != null) {
        
                    app.invoke("Quit");
                }
            }
            return result;
        }
        //转换ppt文档
        public boolean ppt2PDF(String srcFilePath, String pdfFilePath) {
        
            ActiveXComponent app = null;
            Dispatch ppt = null;
            boolean result = true;
            try {
        
                ComThread.InitSTA();
                app = new ActiveXComponent("PowerPoint.Application");
                Dispatch ppts = app.getProperty("Presentations").toDispatch();
    
                // 因POWER.EXE的发布规则为同步，所以设置为同步发布
                ppt = Dispatch.call(ppts, "Open", srcFilePath, true, // ReadOnly
                        true, // Untitled指定文件是否有标题
                        false// WithWindow指定文件是否可见
                ).toDispatch();
    
                Dispatch.call(ppt, "SaveAs", pdfFilePath, 32); // ppSaveAsPDF为特定值32
                System.out.println("转换文档到 PDF..." + pdfFilePath);
                result = true; // set flag true;
            } catch (ComFailException e) {
        
                result = false;
            } catch (Exception e) {
        
                result = false;
            } finally {
        
                if (ppt != null) {
        
                    Dispatch.call(ppt, "Close");
                }
                if (app != null) {
        
                    app.invoke("Quit");
                }
                ComThread.Release();
            }
            return result;
        }
    
        public static void main(String[] args) {
        
            ToPDF d = new ToPDF();
            d.toPDF("E:\\poi-test\\一个.excle.xlsx", "E:\\poi-test\\一个.excle.pdf");
            
        }
    }

### 七、结果：（例） ###

![在这里插入图片描述][20201030145621813.png_pic_center]  
*附：图片转pdf（要用的话，上边的toPDF方法加上图片的后缀判断）*

else if (suffix.equals("jpg") || suffix.equals("jpeg")||suffix.equals("png") || suffix.equals("gif") || suffix.equals("bmp")){
        }

public String imgToPdf(String filename)throws IOException {
        
            String[] strings=filename.split("\\.");
            String str= strings[strings.length-1];
            String toFileName=filename.replace(str,"pdf");//新的文件名pdf格式
    
            File file=new File(filename);
            if(file.exists()){
        
                Document document = new Document();
                FileOutputStream fos = null;
                try {
        
                    fos = new FileOutputStream(toFileName);
                    PdfWriter.getInstance(document, fos);
    
                    // 添加PDF文档的某些信息，比如作者，主题等等
                   // document.addAuthor("arui");
                    //document.addSubject("test pdf.");
    
                    // 设置文档的大小
                    document.setPageSize(PageSize.A4);
                    // 打开文档
                    document.open();
                    // 写入一段文字
                    //document.add(new Paragraph("JUST TEST ..."));
                    // 读取一个图片
                    Image image = Image.getInstance(filename);
                    float imageHeight=image.getScaledHeight();
                    float imageWidth=image.getScaledWidth();
                    int i=0;
                    while(imageHeight>500||imageWidth>500){
        
                        image.scalePercent(100-i);
                        i++;
                        imageHeight=image.getScaledHeight();
                        imageWidth=image.getScaledWidth();
                        System.out.println("imageHeight->"+imageHeight);
                        System.out.println("imageWidth->"+imageWidth);
                    }
    
                    image.setAlignment(Image.ALIGN_CENTER);
    //	      //设置图片的绝对位置
                    // image.setAbsolutePosition(0, 0);
                    // image.scaleAbsolute(500, 400);
                    // 插入一个图片
                    document.add(image);
                } catch (DocumentException de) {
        
                    System.out.println(de.getMessage());
                } catch (IOException ioe) {
        
                    System.out.println(ioe.getMessage());
                }
    
                //向FiletopdfImagetopdf表添加数据
                FiletopdfImagetopdf filetopdfImagetopdf=new FiletopdfImagetopdf();
                filetopdfImagetopdf.setFilename(filename);
                filetopdfImagetopdf.setTofilename(toFileName);
    
                document.close();
                fos.flush();
                fos.close();
                return toFileName;
            }else{
        
                return "图片不存在！";
            }
        }

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## 总结 ##

这里对文章进行总结：  
以上就是今天要讲的内容，本文介绍了怎样使用jacob实现word、excle、ppt、图片转换为pdf的过程。其中核心代码实现可根据读者自己的使用情况稍作拆分或调整。

[20201030144009614.png_pic_center]: https://img-blog.csdnimg.cn/20201030144009614.png#pic_center
[20201030145621813.png_pic_center]: https://img-blog.csdnimg.cn/20201030145621813.png#pic_center