Getwriter () and Getoutputstream () cannot be called simultaneously
HTTP Status 500? Internal Server Error
Type Exception Report
Message getwriter () has already been called for this response
Description The server encountered an unexpected condition this prevented it from fulfilling the request.
Exception
Java.lang.IllegalStateException:getWriter () have already been called for this Responseorg.apache.catalina.connector.Response.getOutputStream (response.java:590) Org.apache.catalina.connector.ResponseFacade.getOutputStream (responsefacade.java:194) Com.itheima.content.ErrorServlet.doGet (errorservlet.java:34) Javax.servlet.http.HttpServlet.service ( httpservlet.java:635) Javax.servlet.http.HttpServlet.service (httpservlet.java:742) Org.apache.tomcat.websocket.server.WsFilter.doFilter (wsfilter.java:52)
Note The full stack trace of the root cause are available in the server logs.
Apache tomcat/8.5.16
HTTP Status 500? Internal Server Error