1 在页面上显示各种文档中的内容。在servlet中的逻辑
2
3 word：
4
5 BufferedInputStream bis = null;
6 URL url = null;
7 HttpURLConnection httpUrl = null; // 建立链接
8 url = new URL(urlReal);
9 httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源
10 httpUrl.connect();// 获取网络输入流
11 bis = new BufferedInputStream(httpUrl.getInputStream());
12
13 String bodyText = null;
14 WordExtractor ex = new WordExtractor(bis);
15 bodyText = ex.getText();
16 response.getWriter().write(bodyText);
17
18 excel：
19
20 BufferedInputStream bis = null;
21 URL url = null;
22 HttpURLConnection httpUrl = null; // 建立链接
23 url = new URL(urlReal);
24 httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源
25 httpUrl.connect();// 获取网络输入流
26 bis = new BufferedInputStream(httpUrl.getInputStream());
27
28 content = new StringBuffer();
29 HSSFWorkbook workbook = new HSSFWorkbook(bis);
30 for (int numSheets = 0; numSheets < workbook.getNumberOfSheets(); numSheets++) {
31 HSSFSheet aSheet = workbook.getSheetAt(numSheets);// 获得一个sheet
32 content.append("/n");
33 if (null == aSheet) {
34 continue;
35 }
36 for (int rowNum = 0; rowNum <= aSheet.getLastRowNum(); rowNum++) {
37 content.append("/n");
38 HSSFRow aRow = aSheet.getRow(rowNum);
39 if (null == aRow) {
40 continue;
41 }
42 for (short cellNum = 0; cellNum <= aRow.getLastCellNum(); cellNum++) {
43 HSSFCell aCell = aRow.getCell(cellNum);
44 if (null == aCell) {
45 continue;
46 }
47 if (aCell.getCellType() == HSSFCell.CELL_TYPE_STRING) {
48 content.append(aCell.getRichStringCellValue()
49 .getString());
50 } else if (aCell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC) {
51 boolean b = HSSFDateUtil.isCellDateFormatted(aCell);
52 if (b) {
53 Date date = aCell.getDateCellValue();
54 SimpleDateFormat df = new SimpleDateFormat(
55 "yyyy-MM-dd");
56 content.append(df.format(date));
57 }
58 }
59 }
60 }
61 }
62 response.getWriter().write(content.toString());
63
64 ppt：
65
66 BufferedInputStream bis = null;
67 URL url = null;
68 HttpURLConnection httpUrl = null; // 建立链接
69 url = new URL(urlReal);
70 httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源
71 httpUrl.connect();// 获取网络输入流
72 bis = new BufferedInputStream(httpUrl.getInputStream());
73
74 StringBuffer content = new StringBuffer("");
75 SlideShow ss = new SlideShow(new HSLFSlideShow(bis));
76 Slide[] slides = ss.getSlides();
77 for (int i = 0; i < slides.length; i++) {
78 TextRun[] t = slides[i].getTextRuns();
79 for (int j = 0; j < t.length; j++) {
80 content.append(t[j].getText());
81 }
82 content.append(slides[i].getTitle());
83 }
84 response.getWriter().write(content.toString());
85
86 pdf：
87
88 BufferedInputStream bis = null;
89 URL url = null;
90 HttpURLConnection httpUrl = null; // 建立链接
91 url = new URL(urlReal);
92 httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源
93 httpUrl.connect();// 获取网络输入流
94 bis = new BufferedInputStream(httpUrl.getInputStream());
95
96 PDDocument pdfdocument = null;
97 PDFParser parser = new PDFParser(bis);
98 parser.parse();
99 pdfdocument = parser.getPDDocument();
100 ByteArrayOutputStream out = new ByteArrayOutputStream();
101 OutputStreamWriter writer = new OutputStreamWriter(out);
102 PDFTextStripper stripper = new PDFTextStripper();
103 stripper.writeText(pdfdocument.getDocument(), writer);
104 writer.close();
105 byte[] contents = out.toByteArray();
106
107 String ts = new String(contents);
108 response.getWriter().write(ts);
109
110 txt：
111
112 BufferedReader bis = null;
113 URL url = null;
114 HttpURLConnection httpUrl = null; // 建立链接
115 url = new URL(urlReal);
116 httpUrl = (HttpURLConnection) url.openConnection();// 连接指定的资源
117 httpUrl.connect();// 获取网络输入流
118 bis = new BufferedReader( new InputStreamReader(httpUrl.getInputStream()));
119
120 StringBuffer buf=new StringBuffer();
121 String temp;
122 while ((temp = bis.readLine()) != null) {
123 buf.append(temp);
124 response.getWriter().write(temp);
125 if(buf.length()>=1000){
126 break;
127 }
128 }
129 bis.close();
