在jsp页面中如何访问绝对路径中的图片代码,Java代码库,德仔网

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【Java】在jsp页面中如何访问绝对路径中的图片

作者:404nofound405 / 发布于2014/12/30/ 515


	/**
	 * 加载图片
	 * @return
	 * @throws Exception
	 */
	 @RequestMapping("/getImage.html")
	 public ModelAndView getImage(HttpServletRequest request, HttpServletResponse response,
	 @RequestParam(value="newFlag", required=false) String newFlag,
	 @RequestParam(value="fileName", required=false) String fileName){
	
	 if(StringUtil.isNotEmpty(fileName)){
	 String basePath = null;
	 if(StringUtil.isNotEmpty(newFlag)){
	 basePath = System.getProperty("java.io.tmpdir");
	 }else{
	 basePath = this.getFileUploadPath();
	 }
	 String templatePath = basePath+"/"+fileName;
	 File temp = new File(templatePath);
	 FileInputStream steam = null;
	 if(temp.exists()){
	 try {
	 steam = new FileInputStream(templatePath);
	 String fileNames = new String(fileName.getBytes("UTF-8"),"ISO_8859_1");
	 response.setCharacterEncoding("UTF-8");
	 String contentType = null;
	 if(fileName.endsWith(".emf")){
	 contentType = "application/x-emf";
	 }else if(fileName.endsWith(".wmf")){
	 contentType = "application/x-wmf";
	 }else if(fileName.endsWith(".jpeg") || fileName.endsWith(".jpg")){
	 contentType = "image/jpeg";
	 }else if(fileName.endsWith(".png")){
	 contentType = "image/png";
	 }else if(fileName.endsWith(".dib")){
	 contentType = "application/x-dib";
	 }else if(fileName.endsWith(".gif")){
	 contentType = "image/gif";
	 }else if(fileName.endsWith(".tiff")){
	 contentType = "image/tiff";
	 }else if(fileName.endsWith(".eps")){
	 contentType = "application/x-ps";
	 }else if(fileName.endsWith(".bmp")){
	 contentType = "application/x-bmp";
	 }else if(fileName.endsWith(".wpg")){
	 contentType = "application/x-wpg";
	 }
	 if(contentType != null){
	 response.setContentType(contentType);
	 }
	 response.setHeader("Pragma","No-cache");
	 response.setHeader("Cache-Control","no-cache");
	 response.setDateHeader("Expires", 0);
	 response.addHeader("content-disposition","attachment; filename=" +fileNames);
	 OutputStream out = response.getOutputStream();
	 byte[] bt = new byte[1024];
	 while(steam.read(bt) > -1){
	 out.write(bt);
	 }
	 out.flush();
	 out.close();
	 }catch (Exception e) {
	 logger.error(e);
	 }finally{
	 try{
	 if(steam != null){
	 steam.close();
	 }
	 }catch (IOException e) {
	 }
	 }
	 }else{
	 logger.error("[" + templatePath + "]图片未找到。");
	 try {
	 steam = new FileInputStream(request.getSession().getServletContext().getRealPath("/images/getPhotoFailed.jpg"));
	 String fileNames = new String(fileName.getBytes("UTF-8"),"ISO_8859_1");
	 response.setCharacterEncoding("UTF-8");
	 response.setContentType("image/jpeg");
	 response.setHeader("Pragma","No-cache");
	 response.setHeader("Cache-Control","no-cache");
	 response.setDateHeader("Expires", 0);
	 response.addHeader("content-disposition","attachment; filename=" +fileNames);
	 OutputStream out = response.getOutputStream();
	 byte[] bt = new byte[1024];
	 while(steam.read(bt) > -1){
	 out.write(bt);
	 }
	 out.flush();
	 out.close();
	 }catch (Exception e) {
	 logger.error(e);
	 }finally{
	 try{
	 if(steam != null){
	 steam.close();
	 }
	 }catch (IOException e) {
	 }
	 }
	 }
	 } else {//fileName为空时
	 FileInputStream steam = null;
	 try {
	 steam = new FileInputStream(request.getSession().getServletContext().getRealPath("/images/noPhoto.jpg"));
	 String fileNames = new String(fileName.getBytes("UTF-8"),"ISO_8859_1");
	 response.setCharacterEncoding("UTF-8");
	 response.setContentType("image/jpeg");
	 response.setHeader("Pragma","No-cache");
	 response.setHeader("Cache-Control","no-cache");
	 response.setDateHeader("Expires", 0);
	 response.addHeader("content-disposition","attachment; filename=" +fileNames);
	 OutputStream out = response.getOutputStream();
	 byte[] bt = new byte[1024];
	 while(steam.read(bt) > -1){
	 out.write(bt);
	 }
	 out.flush();
	 out.close();
	 }catch (Exception e) {
	 logger.error(e);
	 }finally{
	 try{
	 if(steam != null){
	 steam.close();
	 }
	 }catch (IOException e) {
	 }
	 }
	 }
	 return null;
	 }

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　绝对路径　　图片　

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