項(xiàng)目開發(fā)過程中,需求涉及到了各種文檔轉(zhuǎn)換為HTML或者網(wǎng)頁易顯示格式,現(xiàn)在將實(shí)現(xiàn)方式整理如下:
一、使用Jacob轉(zhuǎn)換Word,Excel為HTML
“JACOB一個(gè)Java-COM中間件.通過這個(gè)組件你可以在Java應(yīng)用程序中調(diào)用COM組件和Win32 libraries。”
首先下載Jacob包,JDK1.5以上需要使用Jacob1.9版本(JDK1.6尚未測(cè)試),與先前的Jacob1.7差別不大
1、將壓縮包解壓后,Jacob.jar添加到Libraries中;
2、將Jacob.dll放至“WINDOWS\SYSTEM32”下面。
需要注意的是:
【使用IDE啟動(dòng)Web服務(wù)器時(shí),系統(tǒng)讀取不到Jacob.dll,例如用MyEclipse啟動(dòng)Tomcat,就需要將dll文件copy到MyEclipse安裝目錄的“jre\bin”下面。
一般系統(tǒng)沒有加載到Jacob.dll文件時(shí),報(bào)錯(cuò)信息為:“java.lang.UnsatisfiedLinkError: no jacob in java.library.path”】
新建類:
1 public class JacobUtil
2 {
3 public static final int WORD_HTML = 8;
4
5 public static final int WORD_TXT = 7;
6
7 public static final int EXCEL_HTML = 44;
8
9 /**
10 * WORD轉(zhuǎn)HTML
11 * @param docfile WORD文件全路徑
12 * @param htmlfile 轉(zhuǎn)換后HTML存放路徑
13 */
14 public static void wordToHtml(String docfile, String htmlfile)
15 {
16 ActiveXComponent app = new ActiveXComponent("Word.Application"); // 啟動(dòng)word
17 try
18 {
19 app.setProperty("Visible", new Variant( false));
20 Dispatch docs = app.getProperty("Documents").toDispatch();
21 Dispatch doc = Dispatch.invoke(
22 docs,
23 "Open",
24 Dispatch.Method,
25 new Object[] { docfile, new Variant( false),
26 new Variant( true) }, new int[1]).toDispatch();
27 Dispatch.invoke(doc, "SaveAs", Dispatch.Method, new Object[] {
28 htmlfile, new Variant(WORD_HTML) }, new int[1]);
29 Variant f = new Variant( false);
30 Dispatch.call(doc, "Close", f);
31 }
32 catch (Exception e)
33 {
34 e.printStackTrace();
35 }
36 finally
37 {
38 app.invoke("Quit", new Variant[] {});
39 }
40 }
41
42 /**
43 * EXCEL轉(zhuǎn)HTML
44 * @param xlsfile EXCEL文件全路徑
45 * @param htmlfile 轉(zhuǎn)換后HTML存放路徑
46 */
47 public static void excelToHtml(String xlsfile, String htmlfile)
48 {
49 ActiveXComponent app = new ActiveXComponent("Excel.Application"); // 啟動(dòng)word
50 try
51 {
52 app.setProperty("Visible", new Variant( false));
53 Dispatch excels = app.getProperty("Workbooks").toDispatch();
54 Dispatch excel = Dispatch.invoke(
55 excels,
56 "Open",
57 Dispatch.Method,
58 new Object[] { xlsfile, new Variant( false),
59 new Variant( true) }, new int[1]).toDispatch();
60 Dispatch.invoke(excel, "SaveAs", Dispatch.Method, new Object[] {
61 htmlfile, new Variant(EXCEL_HTML) }, new int[1]);
62 Variant f = new Variant( false);
63 Dispatch.call(excel, "Close", f);
64 }
65 catch (Exception e)
66 {
67 e.printStackTrace();
68 }
69 finally
70 {
71 app.invoke("Quit", new Variant[] {});
72 }
73 }
74
75 }
76
當(dāng)時(shí)我在找轉(zhuǎn)換控件時(shí),發(fā)現(xiàn)網(wǎng)易也轉(zhuǎn)載了一偏關(guān)于Jacob使用幫助,但其中出現(xiàn)了比較嚴(yán)重的錯(cuò)誤:String htmlfile = "C:\\AA";
只指定到了文件夾一級(jí),正確寫法是String htmlfile = "C:\\AA\\xxx.html";
到此WORD/EXCEL轉(zhuǎn)換HTML就已經(jīng)差不多了,相信大家應(yīng)該很清楚了:)
二、使用XPDF將PDF轉(zhuǎn)換為HTML
1、下載xpdf最新版本,地址:http://www./xpdf/download.html
我下載的是xpdf-3.02pl2-win32.zip
2、下載中文支持包
我下載的是xpdf-chinese-simplified.tar.gz
3、下載pdftohtml支持包
地址:http:///projects/pdftohtml/
我下載的是:pdftohtml-0.39-win32.tar.gz
4、解壓調(diào)試
1) 先將xpdf-3.02pl2-win32.zip解壓,解壓后的內(nèi)容可根據(jù)需要進(jìn)行刪減,如果只需要轉(zhuǎn)換為txt格式,其他的exe文件可以刪除,只保留pdftotext.exe,以此類推;
2) 然后將xpdf-chinese-simplified.tar.gz解壓到剛才xpdf-3.02pl2-win32.zip的解壓目錄;
3) 將pdftohtml-0.39-win32.tar.gz解壓,pdftohtml.exe解壓到xpdf-3.02pl2-win32.zip的解壓目錄;
4) 目錄結(jié)構(gòu):
+---[X:\xpdf]
|-------各種轉(zhuǎn)換用到的exe文件
|
|-------xpdfrc
|
+------[X:\xpdf\xpdf-chinese-simplified]
|
|
+-------很多轉(zhuǎn)換時(shí)需要用到的字符文件
xpdfrc:此文件是用來聲明轉(zhuǎn)換字符集對(duì)應(yīng)路徑的文件
5) 修改xpdfrc文件(文件原名為sample-xpdfrc)
修改文件內(nèi)容為: Txt代碼 
 #----- begin Chinese Simplified support package
 cidToUnicode Adobe-GB1 xpdf-chinese-simplified\Adobe-GB1.cidToUnicode
 unicodeMap ISO-2022-CN xpdf-chinese-simplified\ISO-2022-CN.unicodeMap
 unicodeMap EUC-CN xpdf-chinese-simplified\EUC-CN.unicodeMap
 unicodeMap GBK xpdf-chinese-simplified\GBK.unicodeMap
 cMapDir Adobe-GB1 xpdf-chinese-simplified\CMap
 toUnicodeDir xpdf-chinese-simplified\CMap
 fontDir C:\WINDOWS\Fonts
 displayCIDFontTT Adobe-GB1 C:\WINDOWS\Fonts\simhei.ttf
 #----- end Chinese Simplified support package

6) 創(chuàng)建bat文件pdftohtml.bat(放置的路徑不能包含空格)
內(nèi)容為: Txt代碼 
 @echo off
 set folderPath=%1
 set filePath=%2
 cd /d %folderPath%
 pdftohtml -enc GBK %filePath%
 exit 7) 創(chuàng)建類
JAVA代碼
public class ConvertPdf
 {
private static String INPUT_PATH;
private static String PROJECT_PATH;
public static void convertToHtml(String file, String project)
 {
 INPUT_PATH = file;
 PROJECT_PATH = project;
if(checkContentType()==0)
 {
 toHtml();
 }
 }
private static int checkContentType()
 {
 String type = INPUT_PATH.substring(INPUT_PATH.lastIndexOf(".") + 1, INPUT_PATH.length())
 .toLowerCase();
if (type.equals("pdf"))
return 0;
else
return 9;
 }
private static void toHtml()
 {
if( new File(INPUT_PATH).isFile())
 {
try
 {
 String cmd = "cmd /c start X:\\pdftohtml.bat \"" + PROJECT_PATH + "\" \"" + INPUT_PATH + "\"";
 Runtime.getRuntime().exec(cmd);
 }
catch (IOException e)
 {
 e.printStackTrace();
 }
 }
 }
 }

String cmd = "....";此處代碼是調(diào)用創(chuàng)建的bat文件進(jìn)行轉(zhuǎn)換
8) 測(cè)試轉(zhuǎn)換
JAVA代碼 
public static void main(String[] args)
 {
 ConvertPdf.convertToHtml("C:\\test.pdf", "X:\\xpdf");
 }

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