注意:com的线程回收不由java垃圾回收器进行处理,因此,每new一次jacob提供的类就要分配一定大小的内存给该操作,new出来的这个com对象在使用结束之后产生的垃圾java是无法回收的,new出来的对象越来越多,内存溢出就不可避免了
https://blog.youkuaiyun.com/u011783999/article/details/50897672?tdsourcetag=s_pcqq_aiomsg
https://men4661273.iteye.com/blog/2097871
参考路径:
https://blog.youkuaiyun.com/csdnFlyFun/article/details/79523262#commentBox
Jacob组件下载地址:https://sourceforge.net/projects/jacob-project/
Jacob 介绍
Jacob 是 JAVA-COM Bridge的缩写,是一个中间件,能够提供自动化访问MS系统下COM组件和Win32 libraries的功能。
MS系统提供的COM组件
COM组件 | 对象ID |
Microsoft Word | Word.Application |
Microsoft Excel | Excel.Application |
Microsoft Powerpoint | Powerpoint.Application |
Microsoft IE | InternetExplore.Application |
WPS文字 | KWPS.Aplication |
WPS的Excel | KET.Application |
WPS的演示文档 | KWPP.Application |
核心类:
JacobObject:用于Java程序MS下的COM进行通信,创建标准的API框架
ComThread:初始化COM组件线程,释放线程,对线程进行管理
Dispatch:调度处理类,封装了操作来从而操作Office,并表示不同MS级别调度对象
ActiveXComponent : 创建COM组件
Variant : 与COM通讯的参数或者返回值
ROT :Running Object Table (ROT),运行对象表将每个线程映射到所有jacobobjects,在线程创建
核心方法:
Dispatch : 可调用该自动化对象的属性或方法,具体的属性和方法要看参考文档VBA API
Dispatch.get(dispatch, String name);获取对象属性
Dispatch.put(dispatch, String name, Object value);设置对象属性
Dispatch.call(dispatch, String name, Object… args);调用对象方法
Dispatch.call部分参数解释:
Dispatch content = Dispatch.call(document, "XXX").getDispatch();
XXX所表示:
Documents:所有文档
Open:打开文档
ActiveXComponent.Visible:设置编辑器是否可见
Tables:获得所有的表格
Bookmarks:所有标签
Selection:光标所在处或选中的区域
select:选中
typeParagraph:设置为一个段落
ParagraphFormat:段落格式,用alignment设置
alignment:1、居中,2、靠右,3、靠左
Add:新建一个word文档
Close:关闭文档,0不保存,-1保存,-2弹出框确认,注意ComThread.Release();关闭整个word进程
SaveAS:另存为
save:保存
printOut:打印
Application:得到ActiveXComponent的实例
WindowState:Application的属性,表示窗口的大小,0、default,1、maximize,2、minimize
top、left、height、width:application的属性,表示窗口的位置
ActiveXComponent.Quit:关闭所有word文档,但是不退出整个word程序
Range:表示文档中的一个连续范围,由一个起始字符位置和一个终止字符位置定义,进而可以得到格式的信息
Item:得到指定的表格
Rows:得到表格的所有行
Cell:表格的一个单元格
Text:word的文本内容
InsertFile:插入文件
InsertRowsBelow:在指定的行下面插入一行
InsertAfter:在指定对象后插入
Delete:删除,可以是表格的行
Count:返回数目,比如Rows、Tables的数目
Height:返回高度,比如行高、表格行的高
Split:拆分单元格,要指定行数和列数
Merge:合并单元格
Exists:指定的对象是否存在,返回bool值
Copy:复制
Paste:粘贴
Font:字体
Name:字体的名字
Bold:字体是否为粗体
Italic:字体是否为斜体
Underline:字体是否有下划线
Color:颜色
Size:大小
Borders:指定边框,-1为上边框,-2左边框,-3为下边框,-4有右边框,-5为横向边框,-6为纵向边框,-7从左上角开始的斜线,-8从左下角开始的斜线
AutoFitBehavior:自动调整大小,1为内容自动调整大小,2为窗口自动调整大小
Content:取的内容
InLineShapes:
AddPicture:增加一张图片,需要制定路径
homeKey:光标移到开头
moveDown:光标往下一行
moveUp:光标往上一行
moveRight:光标往左一列
moveLeft:光标往右一列
find:要查找的文本
Forward:向前查找
Format:查找的文本格式
MatchCase:大小写匹配
MatchWholeWord:全字匹配
Execute:开始执行查找
参考:


import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.Image; import com.itextpdf.text.PageSize; import com.itextpdf.text.pdf.PdfWriter; 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 JacobPDFConverter implements PDFConverter { private static final int wdFormatPDF = 17; private static final int xlTypePDF = 0; private static final int ppSaveAsPDF = 32; public void convert2PDF(String inputFile, String pdfFile) { String suffix = FileUtils.getFileSufix(inputFile); File file = new File(inputFile); if(!file.exists()){ System.out.println("文件不存在!"); return; } if(suffix.equals("pdf")){ System.out.println("PDF not need to convert!"); return ; } boolean isImg = false;//FileUtils.isImage(inputFile); try{ isImg = FileUtils.isImage(inputFile); }catch(Exception ce){ } if(isImg){ img2PDF(inputFile,pdfFile); }else if(suffix.equals("doc")||suffix.equals("docx")||suffix.equals("txt")){ word2PDF(inputFile,pdfFile); }else if(suffix.equals("ppt")||suffix.equals("pptx")){ ppt2PDF(inputFile,pdfFile); }else if(suffix.equals("xls")||suffix.equals("xlsx")){ excel2PDF(inputFile,pdfFile); }else if(suffix.equals("wps")){ //wps2PDF(inputFile,pdfFile); word2PDF(inputFile,pdfFile); }else{ //System.out.println("文件格式不支持转换!"); word2PDF(inputFile,pdfFile); } } public void convert2PDF(String inputFile) { String pdfFile = FileUtils.getFilePrefix(inputFile)+".pdf"; convert2PDF(inputFile,pdfFile); } public void convert2PDF(String[] inputFiles, String[] pdfFiles) { try { for(int i = 0;i<inputFiles.length;i++){ String inputFile = inputFiles[i]; String pdfFile = pdfFiles[i]; if(inputFile==null || inputFile.equals("")) continue; convert2PDF(inputFile,pdfFile); } }catch (Exception ce) { } } public void convert2PDF(String[] inputFiles) { String pdfFiles[] = new String[inputFiles.length]; for(int i = 0;i<inputFiles.length;i++){ String inputFile = inputFiles[i]; String pdfFile = FileUtils.getFilePrefix(inputFile)+".pdf"; pdfFiles[i] = pdfFile; } convert2PDF(inputFiles,pdfFiles); } public static void word2PDF(String inputFile,String pdfFile){ ActiveXComponent app = null; Dispatch doc = null; try { ComThread.InitSTA(); app = new ActiveXComponent("Word.Application"); //打开word应用程序 app.setProperty("Visible", false); //设置word不可见 Dispatch docs = app.getProperty("Documents").toDispatch(); //获得word中所有打开的文档,返回Documents对象 //调用Documents对象中Open方法打开文档,并返回打开的文档对象Document doc = Dispatch.call(docs, "Open", inputFile, false, true ).toDispatch(); Dispatch.call(doc, "ExportAsFixedFormat", pdfFile, wdFormatPDF //word保存为pdf格式宏,值为17 ); } catch (ComFailException e) { } catch (Exception e) { } finally { if (doc != null) { Dispatch.call(doc, "Close", false); //关闭文档 } if (app != null) { app.invoke("Quit", 0); //关闭word应用程序 } ComThread.Release(); } } public static void excel2PDF(String inputFile,String pdfFile){ ActiveXComponent app = null; Dispatch excel = null; try { ComThread.InitSTA(); 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 ); } catch (ComFailException e) { } catch (Exception e) { } finally { if (excel != null) { Dispatch.call(excel, "Close",false); } if (app != null) { app.invoke("Quit"); } ComThread.Release(); } } public static void ppt2PDF(String inputFile,String pdfFile){ ActiveXComponent app = null; Dispatch ppt = null; try { ComThread.InitSTA(); app = new ActiveXComponent("PowerPoint.Application"); //app.setProperty("Visible", false); Dispatch ppts = app.getProperty("Presentations").toDispatch(); ppt = Dispatch.call(ppts, "Open", inputFile, 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", pdfFile, ppSaveAsPDF ); } catch (ComFailException e) { System.out.println(e.getMessage()); } catch (Exception e) { } finally { if (ppt != null) { Dispatch.call(ppt, "Close"); } if (app != null) { app.invoke("Quit"); } ComThread.Release(); } } public void wps2PDF(String inputFile,String pdfFile) { File sFile = new File(inputFile); File tFile = new File(pdfFile); ActiveXComponent wps = null; try { ComThread.InitSTA(); wps = new ActiveXComponent("wps.application"); ActiveXComponent doc = wps.invokeGetComponent("Documents").invokeGetComponent("Open", new Variant(sFile.getAbsolutePath())); doc.invoke("ExportPdf", new Variant(tFile.getAbsolutePath())); doc.invoke("Close"); doc.safeRelease(); } catch (Exception e) { System.out.println(e.getMessage()); } finally { if (wps != null) { wps.invoke("Terminate"); wps.safeRelease(); } ComThread.Release(); } } public void img2PDF(String inputFile,String pdfFile) { Document doc = new Document(PageSize.A4, 20, 20, 20, 20); try { PdfWriter.getInstance(doc, new FileOutputStream(pdfFile)); doc.open(); doc.newPage(); Image img = Image.getInstance(inputFile); float heigth = img.getHeight(); float width = img.getWidth(); int percent = getPercent(heigth, width); img.setAlignment(Image.MIDDLE); img.scalePercent(percent+3);// 表示是原来图像的比例; doc.add(img); doc.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (DocumentException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } File mOutputPdfFile = new File(pdfFile); if (!mOutputPdfFile.exists()) { mOutputPdfFile.deleteOnExit(); return; } } public static int getPercent(float h, float w) { int p = 0; float p2 = 0.0f; p2 = 530 / w * 100; p = Math.round(p2); return p; } }
例:


package net.nblh.utils; import java.awt.image.BufferedImage; import java.awt.image.RenderedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import org.icepdf.core.pobjects.Document; import org.icepdf.core.util.GraphicsRenderingHints; 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 Word2PdfUtil { private static final int ppSaveAsPDF = 32; static final int wdDoNotSaveChanges = 0;// 不保存待定的更改 static final int wdFormatPDF = 17;// word转PDF 格式 /** * 文档转pdf转png * @param source 源文件 */ public static int execuConvert(String source) { String ext = source.substring(source.lastIndexOf(".")); String tar = source.replace(ext, ".pdf"); File file = new File(tar); if (file.exists()) { //pdf文件已转换,直接转png return pdf2pngByFile(tar); } // 示例 // String source = "D:\\2017\\庭审案件材料一.doc"; // String target = "D:\\2018\\庭审案件材料一.pdf"; if (!checkAvailable(source,tar)) { return 0; } // String t = setPdfType(source, target); String suffixStr = getSuffix(source); if (".doc".equals(suffixStr) || ".docx".equals(suffixStr)) { return word2pdf(source, tar); } else if(".pptx".equals(suffixStr) || ".ppt".equals(suffixStr)){ return ppt2pdf(source, tar); } else if(".xls".equals(suffixStr) || ".xlsx".equals(suffixStr)){ return xls2Pdf(source, tar); } else { System.out.println("无法转换此文件格式"); } return 0; } public static int word2pdf(String source, String target) { ActiveXComponent app = null; Dispatch doc = null; try { app = new ActiveXComponent("Word.Application"); app.setProperty("Visible", false); Dispatch docs = app.getProperty("Documents").toDispatch(); doc = Dispatch.call(docs, "Open", source, false, true).toDispatch(); File tofile = new File(target); File dirPath = new File(getPath(target)); if (tofile.exists()) { tofile.delete(); } else if (!dirPath.exists()) { dirPath.mkdirs(); } Dispatch.call(doc, "SaveAs", target, wdFormatPDF); // Dispatch.call(doc, "SAs", target, wdFormatPDF); Dispatch.call(doc, "Close", false); doc = null; app.invoke("Quit", wdDoNotSaveChanges); app = null; System.out.println("pdf_ok"); return pdf2pngByFile(target); } catch (Exception e) { return 0; } finally { if (null != doc) { Dispatch.call(doc, "Close", false); } if (app != null) { app.invoke("Quit", wdDoNotSaveChanges); } } } /** * 检查文件格式,只转换doc ,docx,ppt格式 fileName 文件名 * * @return */ private static boolean checkFormat(String fileName) { if (null == fileName || "".equals(fileName)) { return false; } if (!(fileName.substring(fileName.lastIndexOf(File.separator)).contains("."))) { System.out.println("没有指明要转换的文件"); return false; } String format = fileName.substring(fileName.lastIndexOf(".")); if (".doc".equals(format) || ".docx".equals(format) || ".ppt".equals(format) || ".pptx".equals(format) || ".xls".equals(format) || ".xlsx".equals(format) || ".dot".equals(format) || ".dotx".equals(format) || ".pot".equals(format) || ".potx".equals(format) || ".xlt".equals(format) || "xltx".equals(format)) { return true; } System.out.println("文件格式不合符,无法转换"); return false; } /** * 检查路径是否正确 * @return */ public static boolean checkAvailable(String source,String target){ if (isEmpty(source.trim())) { System.out.println("源文件路径不存在"); return false; } if(!source.contains(File.separator) || !source.contains(".")){ System.out.println("请输入正确的源文件路径,以及源文件名"); return false; } if(".".equals(getSuffix(source).trim())){ System.out.println("请输入正确的源文件名"); return false; } if(isEmpty(target)){ System.out.println("目标文件路径不存在"); return false; } if(!target.contains(File.separator) || !target.contains(".")){ System.out.println("请输入正确的目标文件路径,以及目标文件名"); return false; } if(!".pdf".equals(getSuffix(target))){ System.out.println("请正确输入要生成的pdf文件名"); return false; } return true; } /** * 截取文件全路径,不包括文件名 F:/snd/down/ceshi/ */ private static String getPath(String fileName) { if (null != fileName || !"".equals(fileName)) { return fileName.substring(0, fileName.lastIndexOf(File.separator)); } return ""; } /** * 如果目标文件后缀名不是pdf,则强行改为pdf */ private static String setPdfType(String source, String target) { // 目标路径包含文件名称 if (target.substring(target.lastIndexOf(File.separator)).contains(".")) { String ext = target.substring(target.lastIndexOf(".")); String fileName = target.replace(ext, ".pdf"); return fileName; } else { // 没有文件名称,只有路径 return target + getFileName(source) + ".pdf"; } } /** * 截取文件名 不包含后缀名 * * @return */ private static String getFileName(String fileName) { if (!isEmpty(fileName)) { return fileName.substring(fileName.lastIndexOf(File.separator), fileName.lastIndexOf(".")); } return ""; } /** * 获得后缀名 * @param fileName * @return */ private static String getSuffix(String fileName){ return fileName.substring(fileName.lastIndexOf(".")); } private static boolean isEmpty(String str) { if (null == str || "".equals(str)) { return true; } return false; } //ppt 转 pdf public static int ppt2pdf(String srcFilePath, String pdfFilePath) { ActiveXComponent app = null; Dispatch ppt = null; 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(); File dirPath = new File(getPath(pdfFilePath)); if (!dirPath.exists()) { dirPath.mkdirs(); } Dispatch.call(ppt, "SaveAs", pdfFilePath, ppSaveAsPDF); // ppSaveAsPDF为特定值32 System.out.println("pdf转换完成!"); return pdf2pngByFile(pdfFilePath); // set flag true; } catch (ComFailException e) { System.out.println(e.toString()); return 0; } catch (Exception e) { System.out.println(e.toString()); return 0; } finally { if (ppt != null) { Dispatch.call(ppt, "Close"); } if (app != null) { app.invoke("Quit"); } ComThread.Release(); } } // EXCEL转PDF public static int xls2Pdf(String inFilePath, String outFilePath) { ActiveXComponent ax = null; Dispatch excels = null; Dispatch excel = null; try { ax = new ActiveXComponent("Excel.Application"); ComThread.InitSTA(); ax.setProperty("Visible", new Variant(false)); ax.setProperty("AutomationSecurity", new Variant(3)); // 禁用宏 excels = ax.getProperty("Workbooks").toDispatch(); File dirPath = new File(getPath(outFilePath)); if (!dirPath.exists()) { dirPath.mkdirs(); } excel = Dispatch .invoke(excels, "Open", Dispatch.Method, new Object[] { inFilePath, new Variant(false), new Variant(false) }, new int[9]) .toDispatch(); // 转换格式 Dispatch.invoke(excel, "ExportAsFixedFormat", Dispatch.Method, new Object[] { new Variant(0), // PDF格式=0 outFilePath, new Variant(0) }, new int[1]);// 0=标准 // (生成的PDF图片不会变模糊) // 1=最小文件 // (生成的PDF图片糊的一塌糊涂) Dispatch.call(excel, "Close", new Variant(false)); if (ax != null) { ax.invoke("Quit", new Variant[] {}); ax = null; } System.out.println("pdf转换完成!"); return pdf2pngByFile(outFilePath); } catch (Exception es) { System.out.println(es.toString()); return 0; } finally { ComThread.Release(); } } /** * 本地pdf文件转png */ public static int pdf2pngByFile(String target){ String filePath = target; Document document = new Document(); // System.out.println("开始转png"); try { document.setFile(filePath); float scale = 1.5f;// 缩放比例(大图) // float scale = 0.2f;// 缩放比例(小图) float rotation = 0f;// 旋转角度 int pageSize = document.getNumberOfPages(); for (int i = 0; i < document.getNumberOfPages(); i++) { BufferedImage image = (BufferedImage) document.getPageImage(i, GraphicsRenderingHints.SCREEN, org.icepdf.core.pobjects.Page.BOUNDARY_CROPBOX, rotation, scale); RenderedImage rendImage = image; // try { // File file = new File("D:/fileUpload/ftpDownload/icepdf_a" + i + ".png"); // // 这里png作用是:格式是jpg但有png清晰度 // ImageIO.write(rendImage, "png", file); // } catch (IOException e) { // e.printStackTrace(); // } try { // WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext(); // ServletContext servletContext = webApplicationContext.getServletContext(); // File contextPath = new File(servletContext.getRealPath("/")); // 项目根目录 // File uploadPath = new File( // contextPath.getParentFile().getAbsoluteFile() + File.separator + "uploadFiles"); // 上传图片存放目录 File uploadPath = new File(target); String fileName = getPathWithName(target); File file1 = new File(fileName); if (!file1.exists()) { file1.mkdirs(); } // System.out.println("地址=" + uploadPath.getAbsolutePath() + "/icepdf_a" + i + ".png" + "\n"); File file = new File(fileName + "\\" + i + ".png"); // 这里png作用是:格式是jpg但有png清晰度 ImageIO.write(rendImage, "png", file); } catch (IOException e) { e.printStackTrace(); } image.flush(); } document.dispose(); System.out.println("png_ok"); System.out.println("pageSize="+pageSize); return pageSize; } catch (Exception e1) { e1.printStackTrace(); } return 0; } /** * 截取文件全路径,包括文件名,去掉后缀 F:/snd/down/ceshi/aaa */ public static String getPathWithName(String fileName) { if (null != fileName || !"".equals(fileName)) { return fileName.substring(0, fileName.lastIndexOf(".")); } return ""; } }
ppt = Dispatch.call(ppts, "Open", srcFilePath, true, // ReadOnly false, // Untitled指定文件是否有标题(参数必须为false,设置成true,ppt转换pdf异常) false// WithWindow指定文件是否可见 ).toDispatch(); Dispatch.call(ppt, "SaveAs", pdfFilePath, ppSaveAsPDF); // ppSaveAsPDF为特定值32
参考地址:
https://blog.youkuaiyun.com/u013761812/article/details/72742629
http://blog.sina.com.cn/s/blog_aa90e61e0101a14x.html
http://www.bubuko.com/infodetail-1320787.html