技術標籤：java7

public void getIdentificationBarFile(String formdataid, HttpServletRequest request, HttpServletResponse response) {
		Map<String, Object> searchParam = new HashMap<String, Object>();
		searchParam.put("form_data_id", formdataid);
		String pdfPath = null;
		try {
			pdfPath =
 
 taskinformationservice.getIdentificationBarFile(searchParam);
		} catch (Exception e1) {
			e1.printStackTrace();
		}
		if (pdfPath != null) {

			File pdf = new File(pdfPath);
			response.setContentType("text/html;charset=" + "UTF-8");
			try (BufferedInputStream bis = new BufferedInputStream
 
(new FileInputStream(pdfPath));
					BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());) {
				//必寫,流必須關閉，java7中關閉流可以寫在try裡，就不用手動finally裡close了
				response.setContentType("application/pdf");// 不同型別的檔案對應不同的MIME型別 // 重點突出
				response.setHeader("Content-disposition"
 
,
						"attachment; filename=" + new String("標識條.pdf".getBytes("UTF-8"), "ISO8859-1"));
				response.setHeader("Content-Length", String.valueOf(pdf.length()));
				//bis.available()返回緩衝區中要讀取的剩餘位元組數的總和
				 byte[] buffer = new byte[bis.available()];
				 bis.read(buffer);
				 bos.write(buffer);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		/*response.setContentType("text/html;charset=" + "UTF-8");
		try {
			Map<String, Object> searchParam = new HashMap<String, Object>();
			searchParam.put("form_data_id", formdataid);
			String pdfPath = taskinformationservice.getIdentificationBarFile(searchParam);
			if(pdfPath!=null){
				
				File pdf = new File(pdfPath);
				response.setContentType("application/x-msdownload;");// 不同型別的檔案對應不同的MIME型別 // 重點突出
				response.setHeader("Content-disposition","attachment; filename=" + new String("標識條.pdf".getBytes("UTF-8"), "ISO8859-1"));
				response.setHeader("Content-Length", String.valueOf(pdf.length()));
				
				BufferedInputStream bis = new BufferedInputStream(new FileInputStream(pdfPath));//這裡不是檔案pdf，而是檔案地址
				BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());
				byte[] buffer = new byte[2048];
				int bytesRead;//獲得buffer的長度，沒有值返回-1
				while (-1 != (bytesRead = bis.read(buffer, 0, buffer.length))) {
					bos.write(buffer, 0, bytesRead);
				}
				
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			//必寫,流必須關閉，java7中關閉流可以寫在try裡，就不用手動finally裡close了
			if (bis != null)
				try {
					bis.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			if (bos != null)
				try {
					bos.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
		}*/
	}