权限验证报错：getWriter() has already been called for this response

这个问题困扰了我好几天，开始以为是代码错了，后来才知道是配置错了。

我不太懂Spring Security，但关于这个项目遇见的问题，需要几点注意的地方：

①由于Spring Security配置引起的错误

②需要开启redis

③路径要正确

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权限验证报错：getWriter() has already been called for this response

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权限验证报错：getWriter() has already been called for this response

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权限验证报错：getWriter() has already been called for this response

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权限验证报错：getWriter() has already been called for this response

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权限验证报错：getWriter() has already been called for this response

浏览器显示的问题，调试位置和编辑器不对应

权限验证报错：getWriter() has already been called for this response