org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: Cannot forward after response has been committed

又一次跳转，代码控制跳转，跳转了两次，加个return；

web.xml错误信息强制跳转页面，抛出异常

<error-page>
        <exception-type>java.lang.Throwable</exception-type>
        <location>/error/error.html</location>
</error-page>

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    参考:https://blog.csdn.net/lewky_liu/article/details/79845655 加上 return 搞定

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