资源评论
yugang06172012-09-16有用，看不懂直接用就好了- 萝卜切成肉丁2012-10-16这种方式后台会报错，好像是 getOutputStream() has already been called for this response 后来改成了servlet的方式。添加了这样几行代码： mSession.setAttribute("verificationCode",sRand);//将验证码存入session g.dispose(); os = mResponse.getOutputStream(); ImageIO.write(image, "JPEG",os); os.flush(); os
