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 FilesApache Software FoundationApache Tomcat 6.0.20webappsflexTestimge 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(); }