java.lang.IllegalStateException:getOutputStream() has alread

来源：学生作业帮编辑：百度作业网作业帮分类：综合作业时间：2024/08/07 16:37:42

java.lang.IllegalStateException:getOutputStream() has already been called for this response
这是什么错误?源代码：生成验证码

esponse的outputStream已经被调用获取过了,不能重复调用response.getOutputStream方法.
这是在JSP里写的代码吧?JSP里有一个out变量,代表response的outputStream,试一试
ImageIO.write(image,"JPEG",out);

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