请问关于由数据显示图片的问题,以下是我的代码,其中img是图片数据
response.reset();
response.setContentType("image/jpeg");
String img = dn.showNoteImg(request.getParameter("id"));
response.getOutputStream().write(img.getBytes());
现在出现异常java.lang.IllegalStateException: getOutputStream() has already been called for this response
response.reset();
response.setContentType("image/jpeg");
String img = dn.showNoteImg(request.getParameter("id"));
response.getOutputStream().write(img.getBytes());
现在出现异常java.lang.IllegalStateException: getOutputStream() has already been called for this response
解决方案 »
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