servlet上传图片 服务器路径（转）

1.在servlet中上传图片,上传的文件夹是imge在webroot下,主要代码如下

    private void saveImage(HttpServletRequest request, HttpServletResponse response) throws IOException  {
            //保存的图片的名称
            fileName =System.currentTimeMillis() + ".jpg";
           //获得imge文件夹在tomcat中的决定路径，basePath的值是C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.20\webapps\flexTest\imge
            String basePath = request.getSession().getServletContext().getRealPath("/imge/");
            filePath = basePath;
            System.out.println("保存图片的地址为："+filePath);
            realFilePath = filePath+"\\"+fileName;
            // 获得一个图片文件流，我这里是从flex中传过来的
            BufferedImage bufferedImage = ImageIO.read(request.getInputStream());
           if (bufferedImage != null) {
               //保存图片到指定的目录和文件中
               ImageIO.write(bufferedImage, "jpeg", new File(filePath , fileName));
           }
       }
       

2.当要把上面上传图片通过servlet展示到游览器上时，取的路径如下：

private void printImage(HttpServletRequest request, HttpServletResponse response) throws IOException  {
        response.setContentType("text/html");
        request.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        //获得服务器的地址，不能直接获取本机tomcat的绝对路径，不然游览器读取不了指定的图片文件
        // basePath的值是http://localhost:8080/flexTest
        String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+request.getContextPath()+"/";
        String showFile = basePath+"/imge/"+this.fileName;
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
        out.println("<HTML>");
        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
        out.println("  <BODY>");
        out.print("    This is ");
        out.print(" <img src="+showFile+">");
        out.print("</img>");
        System.out.println("有显示图片的地址是"+showFile);
       //showFile的值是    http://localhost:8080/flexTest//imge/1299470395060.jpg
        out.println(", using the POST method");
        out.println("  </BODY>");
        out.println("</HTML>");
        out.flush();
        out.close();