The server encountered an internal error that prevented it from fulfilling this request. 一直在提示这个错误

java.lang.NumberFormatException: null
java.lang.Integer.parseInt(Integer.java:415)
java.lang.Integer.parseInt(Integer.java:497)
com.cx.service.DepartmentDo.deptUpdate(DepartmentDo.java:113)
com.cx.service.DepartmentDo.doPost(DepartmentDo.java:50)
javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
com.cx.util.CharacterFilter.doFilter(CharacterFilter.java:21)

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NumberFormatException，前端的depId没有传回来，或者不能转换为整形。

415行 用了Integer.parseInt(""),但是里面的值是Null或者" ".转换前进行StringUtils.isNotBlank()判断,去除Null和" ".再精准点可以判断blank后再判断StringUtils.isNumeric(),

DepartmentDo.java第113行 request.getParameter("deptId")为空了 检查下吧