javax.imageio.IIOException: Can't create output stream!
来源：互联网 发布：惠普m1216nfh扫描软件 编辑：程序博客网 时间：2024/05/22 03:29
今天发现个诡异的问题，登录验证码出不来,本地环境是Ok的，放到linxu上就报错：javax.imageio.IIOException: Can't create output stream!，报错处的代码为：
ImageIO.write(challenge, CAPTCHA_IMAGE_FORMAT, jpegOutputStream);
开始以为是服务器，或者JDK的问题，最后发现是tomcat下少了temp目录。
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- javax.imageio.IIOException: Can't create output stream!
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