getOutputStream() has already
时间: 2023-08-26 08:13:14 浏览: 171
getOutputStream() has already been called for this response 错误解决
引用和的信息,当你在jsp中使用response.getOutputStream()方法时,如果该方法已经被调用过一次,就会出现IllegalStateException异常。这是因为在同一个响应对象中,只能调用一次getOutputStream()方法。一旦调用了该方法,就无法再调用getWriter()方法。这是因为响应对象只能使用一种输出流来发送数据,要么是OutputStream,要么是Writer。
要解决这个问题,你可以检查你的代码,确保在调用getOutputStream()方法之前没有调用过getWriter()方法。如果你需要向页面输出文本内容,可以使用getWriter()方法来代替getOutputStream()方法。如果你确实需要同时输出文本和图片,你可以将图片转换为字节数组或者base64编码的字符串,然后使用getOutputStream()方法来发送图片数据。这样就可以避免调用getOutputStream()方法两次导致的异常。<em>1</em><em>2</em><em>3</em>
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