java实现word,ppt,excel,jpg转pdf

word，excel，jpeg 转 pdf

首先下载相关jar包：http://download.csdn.net/detail/xu281828044/6922499

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;  

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.PdfWriter;  

public class Word2Pdf {  

 static final int wdDoNotSaveChanges = 0;// 不保存待定的更改。
 static final int wdFormatPDF = 17;// word转PDF 格式
 static final int ppSaveAsPDF = 32;// ppt 转PDF 格式  

 public static void main(String[] args) throws IOException {
  String source1 = "e:\\test.doc";
  String source2 = "e:\\asd.xlsx";
  String source3 = "e:\\aa.ppt";
  String target1 = "e:\\test1.pdf";
  String target2 = "e:\\test2.pdf";
  String target3 = "e:\\test3.pdf";  

  Word2Pdf pdf = new Word2Pdf();
//  pdf.word2pdf(source1, target1);
//  pdf.excel2pdf(source2, target2);
//  pdf.ppt2pdf(source3, target3);
//  pdf.imgToPdf("e:/12345.jpg","e:/xu.pdf");
 }  

 public void word2pdf(String source,String target){
  System.out.println("启动Word");
  long start = System.currentTimeMillis();
  ActiveXComponent app = null;
  try {
   app = new ActiveXComponent("Word.Application");
   app.setProperty("Visible", false);  

   Dispatch docs = app.getProperty("Documents").toDispatch();
   System.out.println("打开文档" + source);
   Dispatch doc = Dispatch.call(docs,//
     "Open", //
     source,// FileName
     false,// ConfirmConversions
     true // ReadOnly
     ).toDispatch();  

   System.out.println("转换文档到PDF " + target);
   File tofile = new File(target);
   if (tofile.exists()) {
    tofile.delete();
   }
   Dispatch.call(doc,//
     "SaveAs", //
     target, // FileName
     wdFormatPDF);  

   Dispatch.call(doc, "Close", false);
   long end = System.currentTimeMillis();
   System.out.println("转换完成..用时：" + (end - start) + "ms.");
  } catch (Exception e) {
   System.out.println("========Error:文档转换失败：" + e.getMessage());
  } finally {
   if (app != null)
    app.invoke("Quit", wdDoNotSaveChanges);
  }
 }  

 public void ppt2pdf(String source,String target){
  System.out.println("启动PPT");
  long start = System.currentTimeMillis();
  ActiveXComponent app = null;
  try {
   app = new ActiveXComponent("Powerpoint.Application");
   Dispatch presentations = app.getProperty("Presentations").toDispatch();
   System.out.println("打开文档" + source);
   Dispatch presentation = Dispatch.call(presentations,//
     "Open",
     source,// FileName
     true,// ReadOnly
     true,// Untitled 指定文件是否有标题。
     false // WithWindow 指定文件是否可见。
     ).toDispatch();  

   System.out.println("转换文档到PDF " + target);
   File tofile = new File(target);
   if (tofile.exists()) {
    tofile.delete();
   }
   Dispatch.call(presentation,//
     "SaveAs", //
     target, // FileName
     ppSaveAsPDF);  

   Dispatch.call(presentation, "Close");
   long end = System.currentTimeMillis();
   System.out.println("转换完成..用时：" + (end - start) + "ms.");
  } catch (Exception e) {
   System.out.println("========Error:文档转换失败：" + e.getMessage());
  } finally {
   if (app != null) app.invoke("Quit");
  }
 }  

 public void excel2pdf(String source, String target) {
      System.out.println("启动Excel");
      long start = System.currentTimeMillis();
      ActiveXComponent app = new ActiveXComponent("Excel.Application"); // 启动excel(Excel.Application)
      try {
      app.setProperty("Visible", false);
      Dispatch workbooks = app.getProperty("Workbooks").toDispatch();
      System.out.println("打开文档" + source);
      Dispatch workbook = Dispatch.invoke(workbooks, "Open", Dispatch.Method, new Object[]{source, new Variant(false),new Variant(false)}, new int[3]).toDispatch();
      Dispatch.invoke(workbook, "SaveAs", Dispatch.Method, new Object[] {
      target, new Variant(57), new Variant(false),
      new Variant(57), new Variant(57), new Variant(false),
      new Variant(true), new Variant(57), new Variant(true),
      new Variant(true), new Variant(true) }, new int[1]);
      Variant f = new Variant(false);
      System.out.println("转换文档到PDF " + target);
      Dispatch.call(workbook, "Close", f);
      long end = System.currentTimeMillis();
      System.out.println("转换完成..用时：" + (end - start) + "ms.");
      } catch (Exception e) {
       System.out.println("========Error:文档转换失败：" + e.getMessage());
      }finally {
       if (app != null){
        app.invoke("Quit", new Variant[] {});
       }
      }
 }  

 public boolean imgToPdf(String imgFilePath, String pdfFilePath)throws IOException {
     File file=new File(imgFilePath);
     if(file.exists()){
     Document document = new Document();
     FileOutputStream fos = null;
     try {
     fos = new FileOutputStream(pdfFilePath);
     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(imgFilePath);
     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());
     }
     document.close();
     fos.flush();
     fos.close();
     return true;
     }else{
     return false;
     }
     }
}  

另存为哪种类型是由new variant()里面的参数决定的。

Dispatch.invoke(doc, "SaveAs", Dispatch.Method, new Object[] {htmlfile, new Variant(WORD_HTML) }, new int[1]);

new Variant()，这里面的根据传入的参数不同，可以另存为不同的类型，但是在网上搜索了一个并没有找到有关这个参数类型的一个说明，自己尝试了一下，结果如下：

0	Doc
1	Dot
2-5	Txt
6	Rtf
7	Txt
8、10	htm
11	Xml
12、16	Docx
13	Docm
14	Dotx
15	Dotm
17	Pdf

1. import java.io.File;
2. import java.io.FileOutputStream;
3. import java.io.IOException;
4. import com.jacob.activeX.ActiveXComponent;
5. import com.jacob.com.Dispatch;
6. import com.jacob.com.Variant;
7. import com.lowagie.text.Document;
8. import com.lowagie.text.DocumentException;
9. import com.lowagie.text.Image;
10. import com.lowagie.text.PageSize;
11. import com.lowagie.text.pdf.PdfWriter;
12. public class Word2Pdf {
13. static final int wdDoNotSaveChanges = 0;// 不保存待定的更改。
14. static final int wdFormatPDF = 17;// word转PDF 格式
15. static final int ppSaveAsPDF = 32;// ppt 转PDF 格式
16. public static void main(String[] args) throws IOException {
17. String source1 = "e:\\test.doc";
18. String source2 = "e:\\asd.xlsx";
19. String source3 = "e:\\aa.ppt";
20. String target1 = "e:\\test1.pdf";
21. String target2 = "e:\\test2.pdf";
22. String target3 = "e:\\test3.pdf";
23. Word2Pdf pdf = new Word2Pdf();
24. //  pdf.word2pdf(source1, target1);
25. //  pdf.excel2pdf(source2, target2);
26. //  pdf.ppt2pdf(source3, target3);
27. //  pdf.imgToPdf("e:/12345.jpg","e:/xu.pdf");
28. }
29. public void word2pdf(String source,String target){
30. System.out.println("启动Word");
31. long start = System.currentTimeMillis();
32. ActiveXComponent app = null;
33. try {
34. app = new ActiveXComponent("Word.Application");
35. app.setProperty("Visible", false);
36. Dispatch docs = app.getProperty("Documents").toDispatch();
37. System.out.println("打开文档" + source);
38. Dispatch doc = Dispatch.call(docs,//
39. "Open", //
40. source,// FileName
41. false,// ConfirmConversions
42. true // ReadOnly
43. ).toDispatch();
44. System.out.println("转换文档到PDF " + target);
45. File tofile = new File(target);
46. if (tofile.exists()) {
47. tofile.delete();
48. }
49. Dispatch.call(doc,//
50. "SaveAs", //
51. target, // FileName
52. wdFormatPDF);
53. Dispatch.call(doc, "Close", false);
54. long end = System.currentTimeMillis();
55. System.out.println("转换完成..用时：" + (end - start) + "ms.");
56. } catch (Exception e) {
57. System.out.println("========Error:文档转换失败：" + e.getMessage());
58. } finally {
59. if (app != null)
60. app.invoke("Quit", wdDoNotSaveChanges);
61. }
62. }
63. public void ppt2pdf(String source,String target){
64. System.out.println("启动PPT");
65. long start = System.currentTimeMillis();
66. ActiveXComponent app = null;
67. try {
68. app = new ActiveXComponent("Powerpoint.Application");
69. Dispatch presentations = app.getProperty("Presentations").toDispatch();
70. System.out.println("打开文档" + source);
71. Dispatch presentation = Dispatch.call(presentations,//
72. "Open",
73. source,// FileName
74. true,// ReadOnly
75. true,// Untitled 指定文件是否有标题。
76. false // WithWindow 指定文件是否可见。
77. ).toDispatch();
78. System.out.println("转换文档到PDF " + target);
79. File tofile = new File(target);
80. if (tofile.exists()) {
81. tofile.delete();
82. }
83. Dispatch.call(presentation,//
84. "SaveAs", //
85. target, // FileName
86. ppSaveAsPDF);
87. Dispatch.call(presentation, "Close");
88. long end = System.currentTimeMillis();
89. System.out.println("转换完成..用时：" + (end - start) + "ms.");
90. } catch (Exception e) {
91. System.out.println("========Error:文档转换失败：" + e.getMessage());
92. } finally {
93. if (app != null) app.invoke("Quit");
94. }
95. }
96. public void excel2pdf(String source, String target) {
97. System.out.println("启动Excel");
98. long start = System.currentTimeMillis();
99. ActiveXComponent app = new ActiveXComponent("Excel.Application"); // 启动excel(Excel.Application)
100. try {
101. app.setProperty("Visible", false);
102. Dispatch workbooks = app.getProperty("Workbooks").toDispatch();
103. System.out.println("打开文档" + source);
104. Dispatch workbook = Dispatch.invoke(workbooks, "Open", Dispatch.Method, new Object[]{source, new Variant(false),new Variant(false)}, new int[3]).toDispatch();
105. Dispatch.invoke(workbook, "SaveAs", Dispatch.Method, new Object[] {
106. target, new Variant(57), new Variant(false),
107. new Variant(57), new Variant(57), new Variant(false),
108. new Variant(true), new Variant(57), new Variant(true),
109. new Variant(true), new Variant(true) }, new int[1]);
110. Variant f = new Variant(false);
111. System.out.println("转换文档到PDF " + target);
112. Dispatch.call(workbook, "Close", f);
113. long end = System.currentTimeMillis();
114. System.out.println("转换完成..用时：" + (end - start) + "ms.");
115. } catch (Exception e) {
116. System.out.println("========Error:文档转换失败：" + e.getMessage());
117. }finally {
118. if (app != null){
119. app.invoke("Quit", new Variant[] {});
120. }
121. }
122. }
123. public boolean imgToPdf(String imgFilePath, String pdfFilePath)throws IOException {
124. File file=new File(imgFilePath);
125. if(file.exists()){
126. Document document = new Document();
127. FileOutputStream fos = null;
128. try {
129. fos = new FileOutputStream(pdfFilePath);
130. PdfWriter.getInstance(document, fos);
131. // 添加PDF文档的某些信息，比如作者，主题等等
132. document.addAuthor("arui");
133. document.addSubject("test pdf.");
134. // 设置文档的大小
135. document.setPageSize(PageSize.A4);
136. // 打开文档
137. document.open();
138. // 写入一段文字
139. //document.add(new Paragraph("JUST TEST ..."));
140. // 读取一个图片
141. Image image = Image.getInstance(imgFilePath);
142. float imageHeight=image.getScaledHeight();
143. float imageWidth=image.getScaledWidth();
144. int i=0;
145. while(imageHeight>500||imageWidth>500){
146. image.scalePercent(100-i);
147. i++;
148. imageHeight=image.getScaledHeight();
149. imageWidth=image.getScaledWidth();
150. System.out.println("imageHeight->"+imageHeight);
151. System.out.println("imageWidth->"+imageWidth);
152. }
153. image.setAlignment(Image.ALIGN_CENTER);
154. //        //设置图片的绝对位置
155. // image.setAbsolutePosition(0, 0);
156. // image.scaleAbsolute(500, 400);
157. // 插入一个图片
158. document.add(image);
159. } catch (DocumentException de) {
160. System.out.println(de.getMessage());
161. } catch (IOException ioe) {
162. System.out.println(ioe.getMessage());
163. }
164. document.close();
165. fos.flush();
166. fos.close();
167. return true;
168. }else{
169. return false;
170. }
171. }
172. }