Java 用servlet在jsp中显示表

我无法使该表显示在jsp上。你能看一下我的代码，告诉我我做错了什么吗？谢谢大家!

这是java代码：

@WebServlet(name = "TurvingControllerServlet", urlPatterns = {"/TurvingController"})
@MultipartConfig

public class TurvingControllerServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static String INSERT_OR_EDIT = "/turvingen.jsp";
private static String LIST_TURVING = "/waarnemingen.jsp";
private Turving turv;

public TurvingControllerServlet() {
    super();
    turv = new Turving();
}

@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String forward="";
    String action = request.getParameter("action");

    if (action.equalsIgnoreCase("delete")){
        String id = request.getParameter("id");
        turv.wisTurving();
        forward = LIST_TURVING;
        request.setAttribute("turving", turv.toonAlleTurvingen());    
    }  else if (action.equalsIgnoreCase("waarnemingen")){
        forward = LIST_TURVING;
        request.setAttribute("turving", turv.toonAlleTurvingen());
    } else {
        forward = INSERT_OR_EDIT;
    }

    RequestDispatcher view = request.getRequestDispatcher(forward);
    view.forward(request, response);
}
 @Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    Turving turving = new Turving();

    turving.setId(request.getParameter("id"));
    turving.setDatum(request.getParameter("datum"));
    turving.setTijd(request.getParameter("tijd"));
    turving.setPlaats(request.getParameter("plaats"));
    turving.setSpotternaam(request.getParameter("spotternaam"));
    turving.setVogelsoort(request.getParameter("vogelsoort"));
    turving.schrijfTurving();
    String id = request.getParameter("spotternaam");

    RequestDispatcher view = request.getRequestDispatcher(LIST_TURVING);
    request.setAttribute("turvingen", turv.toonAlleTurvingen());
    view.forward(request, response);
}
}

这是JSP：（它的一部分）

资料
蒂吉德
普拉茨
斯波特纳姆
沃格尔肖特

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我真的希望你能帮助我，我看不出哪里出了问题…

你的属性名称不匹配

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您设置的属性称为

turving

。您正在请求的代码从servlet中的代码中被称为

turvingen

RequestDispatcher view = request.getRequestDispatcher(LIST_TURVING);
request.setAttribute("turvingen", turv.toonAlleTurvingen());
view.forward(request, response);

如果

turv.toonAlleTurvingen（）

返回

列表

。然后，在将列表与请求一起转发之前，需要初始化并填充servlet中的列表

所以你需要像这样做

List list=new ArrayList();
list=turv.toonAlleTurvingen();

然后将列表转发到属性，如下所示：

request.setAttribute("turvingen", list);

希望这有帮助

request.setAttribute("turvingen", list);