1
나는 JSP page.The ListUsers 방법에 자바 빈즈 클래스와 쇼의 값을 얻을 내가 내 서블릿에서의 doGet 방법이PropertyNotFoundException 페이지
public class Users extends dbConnect
{
private int UserId;
public int getUserId()
{
return UserId;
}
public void setUserId(int userId)
{
UserId = userId;
}
}
다음과 같은 자바 빈 클래스가 반환하는 것입니다 데이터베이스의 목록.
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
List<Users> arrUserList = new ArrayList<Users>();
Users objUser = new Users();
arrUserList = objUser.listUsers();
for(Users Userobj : arrUserList)
{
System.out.println(Userobj.getUserId());
}
request.setAttribute("arrUserDetails", arrUserList);
RequestDispatcher rst = request.getRequestDispatcher("ListUsers.jsp");
rst.forward(request, response);
}
나는 그 내 JSP 페이지에 표시하기이 아닌 UserId.But 그것의 표시 위의 루프에서 사용자 아이디의 값을 출력합니다. javax.el.PropertyNotFoundException 표시
<%@ page import="com.acme.users.Users"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<c:forEach items="${arrUserDetails}" var="account">
<tr>
<td>
<c:out value="${account.UserId}" />
</td>
</tr>
</c:forEach>
그것. 예외에 대한 스택을 검사하고 bean 이름과 getters 메소드가 동일하다는 것을 확인했습니다. 그러나 여전히 오류를 보여줍니다.
은 콘솔의 메시지는 왜 이런 일이 않는
Feb 16, 2013 2:44:19 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
javax.el.PropertyNotFoundException: Property 'UserId' not found on type com.acme.users.Users
at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:223)
at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:200)
at javax.el.BeanELResolver.property(BeanELResolver.java:311)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:85)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:67)
at org.apache.el.parser.AstValue.getValue(AstValue.java:169)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:985)
at org.apache.jsp.ListUsers_jsp._jspx_meth_c_005fout_005f0(ListUsers_jsp.java:170)
at org.apache.jsp.ListUsers_jsp._jspx_meth_c_005fforEach_005f0(ListUsers_jsp.java:124)
at org.apache.jsp.ListUsers_jsp._jspService(ListUsers_jsp.java:84)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
at com.acme.users.ListUsers.doGet(ListUsers.java:36)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
다음과 같이인가? 당신은 필드의 이름입니다 UserId을 사용하고
PropertyNotFoundException의 * 세부 사항 *은 무엇입니까 던졌습니다? –
시도'account.userId' – Abubakkar
와우 어떻게 작동합니까 대답 –