柚子快报激活码778899分享:Jacob操作ppt

http://yzkb.51969.com/

前几天使用Apache 的POI操作ppt,后来发现转成的图片出现乱码,而且处理了之后,还会有遗留

因此决定换一种处理方式

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。

1.准备

(1)安装MS Office

(2)使用spring boot 框架

(3)pom.xml 添加 jacob 依赖

net.sf.jacob-project

jacob

1.14.3

(4)安装dll

在https://mvnrepository.com/ 查询jacob,选择第一个

选择适合自己机器的dll文件

将下载下来的dll文件放在

C:\Program Files\Java\jdk1.8.0_151\bin

C:\Program Files\Java\jdk1.8.0_151\jre\bin

C:\WINDOWS\system32

C:\Program Files\Java\jre1.8.0_151\bin

其实只要在 C:\WINDOWS\system32下就可以找到了

2.使用

MS系统提供的COM组件

COM组件对象ID

MS Word

Word.Application

MS Excel

Excel.Application

MS Powerpoint

Powerpoint.Application

 

重要的类和方法

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

  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

ActiveXComponent : 创建COM组件

Variant : 与COM通讯的参数或者返回值

可以参考VBA API,使用Jacob操作COM组件 https://docs.microsoft.com/en-us/office/vba/api/powerpoint.slides.insertfromfile 查看 

处理过程

  初始化ComThread——》初始化应用——》设置应用属性——》获取应用属性或对象,设置属性参数——》调用属性对应的方法

(1)ppt转pdf

public BackRS ppt2Pdf(String sourcePath, String destPath,BackRS rs){

ActiveXComponent ppt = null;

Dispatch presentations = null;

try {

ComThread.InitMTA(true);

ppt = new ActiveXComponent("PowerPoint.application");

Dispatch.put(ppt.getObject(), "DisplayAlerts", new Variant(false));

presentations = ppt.invokeGetComponent("Presentations")

.invokeGetComponent("Open", new Variant(sourcePath));

Dispatch.invoke(presentations,

"SaveAs",

Dispatch.Method,

new Object[]{destPath, new Variant(32)},

new int[1]);

rs.setFlag(true);

rs.setMsg("pdf successfully converted.");

rs.setPath(destPath);

rs.setFileName(sourcePath);

} catch (Exception e) {

rs.setFlag(false);

rs.setMsg(e.getMessage());

} finally {

try {

if (ppt != null) {

ppt.invoke("Quit");

}

} catch (Exception e) {

rs.setFlag(false);

rs.setMsg(e.getMessage());

} finally {

if (presentations != null)

presentations.safeRelease();

if (ppt != null)

ppt.safeRelease();

ComThread.Release();

}

}

return rs;

}

(2)ppt按页保存图片

public static final int PPT_SAVEAS_JPG = 17;

public BackRS converter(String fileName){

BackRS rs = new BackRS();

ActiveXComponent ppt = null;

Dispatch presentations = null;

String source = fileName;

File file = new File(source);

if (!file.exists()) {

rs.setFlag(false);

rs.setMsg("转换文件不存在");

return rs;

}

String filePath = file.getParent()+File.separator;

String dest = filePath + getFileNameNoEx(file.getName())+"_JPG";

File destPath = new File(dest);

if (!destPath.exists()) {

destPath.mkdir();

}

try {

ComThread.InitMTA(true);

ppt = new ActiveXComponent("PowerPoint.application");

Dispatch.put(ppt.getObject(), "DisplayAlerts", new Variant(false));

presentations = ppt.invokeGetComponent("Presentations").invokeGetComponent("Open", new Variant(source));

saveAs(presentations, dest, PPT_SAVEAS_JPG);

rs.setFlag(true);

rs.setMsg("Image successfully converted.");

rs.setPath(dest);

rs.setFileName(fileName);

} catch (Exception e) {

rs.setFlag(false);

rs.setMsg(e.getMessage());

} finally {

try {

if (ppt != null) {

ppt.invoke("Quit");

}

} catch (Exception e) {

rs.setFlag(false);

rs.setMsg(e.getMessage());

} finally {

if (presentations != null)

presentations.safeRelease();

if (ppt != null)

ppt.safeRelease();

ComThread.Release();

}

}

return rs;

}

public void saveAs(Dispatch presentation, String saveTo,

int ppSaveAsFileType)throws Exception {

Dispatch.call(presentation, "SaveAs", saveTo, new Variant(

ppSaveAsFileType));

}

(3)ppt合并

public void merge(String outPutPPTPath, List mergePPTPathList) {

// 启动 office PowerPoint程序

ActiveXComponent pptApp = null;

Dispatch presentations = null;

Dispatch outputPresentation;

try {

ComThread.InitMTA(true);

pptApp = new ActiveXComponent("PowerPoint.Application");

Dispatch.put(pptApp, "Visible", new Variant(true));

presentations = pptApp.getProperty("Presentations").toDispatch();

File file = new File(outPutPPTPath);

if (file.exists()) {

file.delete();

}

file.createNewFile();

// 打开输出文件

outputPresentation = Dispatch.call(presentations, "Open", outPutPPTPath, false,

false, true).toDispatch();

// 循环添加合并文件

for (String mergeFile : mergePPTPathList) {

Dispatch mergePresentation = Dispatch.call(presentations, "Open", mergeFile, false,

false, true).toDispatch();

Dispatch mergeSildes = Dispatch.get(mergePresentation, "Slides").toDispatch();

int mergePageNum = Integer.parseInt(Dispatch.get(mergeSildes, "Count").toString());

// 关闭合并文件

Dispatch.call(mergePresentation, "Close");

Dispatch outputSlides = Dispatch.call(outputPresentation, "Slides").toDispatch();

int outputPageNum = Integer.parseInt(Dispatch.get(outputSlides, "Count").toString());

// 追加待合并文件内容到输出文件末尾

Dispatch.call(outputSlides, "InsertFromFile", mergeFile, outputPageNum, 1, mergePageNum);

}

// 保存输出文件,关闭退出PowerPonit.

Dispatch.call(outputPresentation, "Save");

Dispatch.call(outputPresentation, "Close");

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

if (pptApp != null) {

pptApp.invoke("Quit");

}

} catch (Exception e) {

e.printStackTrace();

} finally {

if (presentations != null)

presentations.safeRelease();

if (pptApp != null)

pptApp.safeRelease();

ComThread.Release();

}

}

}

  将mergePPTPathList 中的文件,追加到 outPutPPTPath文件中

  下面的语句

Dispatch.call(outputSlides, "InsertFromFile", mergeFile, outputPageNum, 1, mergePageNum);

InsertFromFile( _FileName_, _Index_, _SlideStart_, _SlideEnd_ )

 参考这个原型,可以实现追加指定的第umPage页面

Dispatch.call(outputSlides, "InsertFromFile",mergeFile, outputPageNum, umPage, umPage);

说明:

  (1)出现错误 Can't get object clsid from progid

    检查 dll文件都在指定位置,但还是报错

    后来发现原来参考的其他人的文章Jacob调用WPS将Office文件转为PDF文件,对象ID不正确

    其中 ppt = new ActiveXComponent("KWPP.Application");改为 ppt = new ActiveXComponent("PowerPoint.application");

  (2)Can’t load IA 32-bit .dll on a AMD 64-bit platform 

    出现这个报错是因为使用的jacob.dll和系统不匹配,把32位的用在了64位的系统上了,几位的系统就用几位jacob.dll

  (3)如果不想用Office想用WPS,不能安装极小安装包

 

 

柚子快报激活码778899分享:Jacob操作ppt

http://yzkb.51969.com/

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