2024年3月5日发(作者：)
java通过url在线预览Word、excel、ppt、pdf、txt文档中的内容【只获得其中的文字】
分类： 毕业设计的问题学习 2011-04-01 18:43 阅读(273) 评论(2) 收藏 举报
在页面上显示各种文档中的内容。在servlet中的逻辑
word：
BufferedInputStream bis = null;
URL url = null;
HttpURLConnection httpUrl = null; // 建立链接
url = new URL(urlReal);
httpUrl = (HttpURLConnection) nnection();// 连接指定的资源
t();// 获取网络输入流
bis = new BufferedInputStream(utStream());
String bodyText = null;
WordExtractor ex = new WordExtractor(bis);
bodyText = t();
ter().write(bodyText);
excel：
BufferedInputStream bis = null;
URL url = null;
HttpURLConnection httpUrl = null; // 建立链接
url = new URL(urlReal);
httpUrl = (HttpURLConnection) nnection();// 连接指定的资源
t();// 获取网络输入流
bis = new BufferedInputStream(utStream());
content = new StringBuffer();
HSSFWorkbook workbook = new HSSFWorkbook(bis);
for (int numSheets = 0; numSheets < berOfSheets(); numSheets++) {
HSSFSheet aSheet = etAt(numSheets);// 获得一个sheet
("/n");
if (null == aSheet) {
continue;
}
for (int rowNum = 0; rowNum <= tRowNum(); rowNum++) {
("/n");
HSSFRow aRow = (rowNum);
if (null == aRow) {
continue;
}
for (short cellNum = 0; cellNum <= tCellNum(); cellNum++) {
HSSFCell aCell = l(cellNum);
if (null == aCell) {
continue;
}
if (lType() == _TYPE_STRING) {
(hStringCellValue()
.getString());
} else if (lType() == _TYPE_NUMERIC) {
boolean b = DateFormatted(aCell);
if (b) {
Date date = eCellValue();
SimpleDateFormat df = new SimpleDateFormat(
"yyyy-MM-dd");
((date));
}
}
}
}
}
ter().write(ng());
ppt：
BufferedInputStream bis = null;
URL url = null;
HttpURLConnection httpUrl = null; // 建立链接
url = new URL(urlReal);
httpUrl = (HttpURLConnection) nnection();// 连接指定的资源
t();// 获取网络输入流
bis = new BufferedInputStream(utStream());
StringBuffer content = new StringBuffer("");
SlideShow ss = new SlideShow(new HSLFSlideShow(bis));
Slide[] slides = des();
for (int i = 0; i < ; i++) {
TextRun[] t = slides[i].getTextRuns();
for (int j = 0; j < ; j++) {
(t[j].getText());
}
(slides[i].getTitle());
}
ter().write(ng());
pdf：
BufferedInputStream bis = null;
URL url = null;
HttpURLConnection httpUrl = null; // 建立链接
url = new URL(urlReal);
httpUrl = (HttpURLConnection) nnection();// 连接指定的资源
t();// 获取网络输入流
bis = new BufferedInputStream(utStream());
PDDocument pdfdocument = null;
PDFParser parser = new PDFParser(bis);
();
pdfdocument = ocument();
ByteArrayOutputStream out = new ByteArrayOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(out);
PDFTextStripper stripper = new PDFTextStripper();
ext(ument(), writer);
();
byte[] contents = Array();
String ts = new String(contents);
ter().write(ts);
txt：
BufferedReader bis = null;
URL url = null;
HttpURLConnection httpUrl = null; // 建立链接
url = new URL(urlReal);
httpUrl = (HttpURLConnection) nnection();// 连接指定的资源
t();// 获取网络输入流
bis = new BufferedReader( new InputStreamReader(utStream()));
StringBuffer buf=new StringBuffer();
String temp;
while ((temp = ne()) != null) {
(temp);
ter().write(temp);
if(()>=1000){
break;
}
}
();
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