关于Cannot forward after response has been committed的问题
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假设你用response.sendRedirect()或者request.getRequestDispatcher("").forward(req, resp);;跳转页面,执行这个语句之后,他的后面还有代码没有执行,想一想,既然跳转了页面,原页面的代码没有终止,一定会出错,这时就会出现错误Cannot forward after response has been committed。解决方法,在response.sendRedirect();后面加 return;
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