常规报这个错误的有两点： 1.简单的说就是重复调用response.sendRedirect(url)。 response.sendRedirect报java.lang.IllegalStateException 2.调用了无效的url（response.sendRedirect(无效url)）
![java.lang.IllegalStateException： onMeasure() did not set the measured dimension by calling setMeasur[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)