这里有2中方式 1.使用tomcat文件夹下的conf里面的server.xml里面的host标签下 添加一个
<Context path="/file" docBase="E:\test" debug="0" reloadable="true"/>然后在 img 的src= “ /file/red.png” 就是引用了 E:\test\red.png图片
2.使用io流的方式 显示图片
先使用action写一个输出文件流的action 例如
public void show(){ HttpServletRequest request = ServletActionContext.getRequest(); HttpServletResponse response = ServletActionContext.getResponse(); String url = request.getParameter("url"); String path = url.substring(0,url.lastIndexOf("/")); String realFileName = url.substring(url.lastIndexOf("/")+1,url.length()); String fileName = request.getParameter("fileName"); String suffix = request.getParameter("suffix"); // path = ServletActionContext.getServletContext().getRealPath(path); try { fileName = java.net.URLEncoder.encode(fileName+"."+suffix, "utf-8"); //ie 中文不兼容问题 } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } response.setHeader("Content-Disposition", "attachment;filename=" + fileName); OutputStream os = null; FileInputStream fis = null; byte[] buffer = new byte[1024]; path = path+"\\"+realFileName+"."+suffix; int len = 0; try { fis = new FileInputStream(new File(path)); os = response.getOutputStream(); while ((len = fis.read(buffer)) > 0) { os.write(buffer, 0, len); } } catch (Exception e) { e.printStackTrace(); } finally { try { os.close(); fis.close(); } catch (IOException e) { e.printStackTrace(); } } return ; }然后在然后在 img 的src= “ ImgPathActionDownLoad.action?url=E:\test\red.png &fileName=red&suffix=png” 就是引用了 E:\test\red.png图片 这里面的除了参数 url其他你自己可以在action里面改