servlet上传图片服务器路径问题

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();
   }  

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