서블릿에서 jsp로 값을 보낼때 500 에러

Question

서블릿에서 jsp로 보냈는데 저런 오류가 뜹니다중요한건 http://localhost:8080/parsing/jsptest.jsp 뒤에 .jsp를 빼면 제대로 값이 뜹니다 왜그런걸까요? HTTP Status 500 - An exception occurred processing JSP page /jsptest.jsp at line 17 type Exception report message An exception occurred processing JSP page /jsptest.jsp at line 17 description The server encountered an internal error that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: An exception occurred processing JSP page /jsptest.jsp at line 17 14: 15: <% 16: ArrayList> testList = (ArrayList>) request.getAttribute("test"); 17: for (int i = 0; i < testList.size(); i++) { 18: HashMap test = testList.get(i); 19: %> 20: Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:580) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) root cause java.lang.NullPointerException org.apache.jsp.jsptest_jsp._jspService(jsptest_jsp.java:101) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.79 logs. Apache Tomcat/7.0.79

더미 · Answer

500은 문법오류입니다.널포인트뜨네요.

겸둥이l · Answer

자해결했습니다 ^^

서블릿에서 jsp로 값을 보낼때 500 에러

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