JSP转HTML

由于最近把网页内容生成PDF，页面用的是JSP 只能通过JSP转HTML  然后再通过iText把HTML转PDF

private String jspToHtml(HttpServletRequest request, HttpServletResponse response,List<String[]> list) {
		ByteArrayOutputStream os = null;
		final PrintWriter pw;
		InputStream is = null;
		ByteArrayOutputStream os2 = null;
		try {
            //这里是JSP的路径
			String url = "/pages/pdfTemplate.jsp";
			RequestDispatcher rd = request.getRequestDispatcher(url);
			os = new ByteArrayOutputStream();
			pw = new PrintWriter(new OutputStreamWriter(os,
					"utf-8"));
			HttpServletResponse rep = new HttpServletResponseWrapper(response) {
				public PrintWriter getWriter() throws IOException {
					return pw;
				}
			};
			request.setAttribute("LIST", list);
			rd.include(request, rep);
			pw.flush();
			is = new ByteArrayInputStream(os.toByteArray());
			os2 = new ByteArrayOutputStream();
			byte[] buffer = new byte[1024];
			int len;
			while ((len = is.read(buffer)) != -1 ) {  
				os2.write(buffer, 0, len);  
			}
			os.flush();
			os2.flush();
			if (pw != null) {
				pw.close();
			}
			return os2.toString("UTF-8");
		} catch (Exception e) {
			LogUtil.APP.error("转HTML出错!", e);
		} finally {
			try {
				if (os2 != null) {
					os2.close();
				}
				if (is != null) {
					is.close();
				}
				if (os != null) {
					os.close();
				}
			} catch (Exception e) {
				LogUtil.APP.error("关流出错!", e);
			}
		}
		return null;
	}