在上传下载文件的时候 出现getOutputStream() has already been called for this response异常的
经过网上查找发现解决方法很多,但是对我的错却解决不了
我返回参数是这么写的
Writer writer;
writer.write("{success : true}");
writer.close();
后面下载文件的response冲突了,
后来改成这样就可以了
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.print("{success:true}");
out.flush();
out.close();
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NULL 博文链接:https://javal.iteye.com/blog/1993903
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