Eclipse 请求的资源不可用。ApacheTomcat/7.0.42

我在

WebContent

文件夹中创建了一个

jsp文件，它有一个表单

表单的操作是一个
Servlet
，但当我单击submit按钮时，我收到以下消息：


这是我的项目结构：


我怎样才能解决这个问题

编辑1：
这是我的jsp文件：

<%@ include file="inc/header.jsp" %>
<h1>Créer un compte!</h1>

<form action="Registration" method="post">
    <fieldset>
        <legend>Informations personnels</legend>
        <label for="nom">Nom </label>
        <input type="text" name="nom">
        <label for="prenom">Prénom </label>
        <input type="text" name="prenom">
        <label for="email">E-Mail </label>
        <input type="text" name="email">
        <label for="sexe">Sexe </label>
        <div class="radio_check">
            <input type="radio" value="F" name="sexe"> Mâle
            <input type="radio" value="F" name="sexe"> Female
        </div>
        <label for="dateNaissance">Date de naissance : </label>
        <input type="datetime" name="dateNaissance">
    </fieldset>
    <fieldset>
        <legend>Infos de connexion</legend>
        <label for="pseudo">Pseudo </label>
        <input type="text" name="pseudo">
        <label for="mdp">Mot de passe </label>
        <input type="text" name="mdp">
        <label for="mdp2">Confirmation du mot de passe </label>
        <input type="text" name="mdp2">
        <div class="radio_check">
            <label for="abonner"><input type="checkbox" name="abonner">Abonnez-vous au blog</label>
        </div>
    </fieldset>
    <input type="submit" value="Créer un compte">
</form>

<%@ include file="inc/footer.jsp" %> 

JSP保持不变

下面是servlet的代码：

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sun.org.apache.xerces.internal.impl.xpath.regex.ParseException;

@WebServlet("/Registration")
public class Registration extends HttpServlet {

    /**
     * 
     */
    private static final long serialVersionUID = 3480182983284787792L;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String nom              = request.getParameter("nom");
        String prenom           = request.getParameter("prenom");
        String email            = request.getParameter("email");
        String sexe             = request.getParameter("sexe");
        Date dateNaissance;
        try {
            dateNaissance = new SimpleDateFormat("dd-MM-yyyy").parse(request.getParameter("dateNaissance"));
        } catch (ParseException e) {
            dateNaissance = new Date();
        }
        String pseudo           = request.getParameter("pseudo");
        String mdp              = request.getParameter("mdp");
        Boolean abonner         = request.getParameter("abonner") == "on" ? true : false;

        Compte c = new Compte(nom, prenom, email, sexe, dateNaissance, pseudo, mdp, abonner);

        request.setAttribute("compte", c);

        ServletContext context = getServletContext();
        context.getRequestDispatcher("signup_successful.jsp").forward(request, response);
    }


    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        processRequest(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        processRequest(req, resp);
    }


}

我只添加了一个方法，称为processRequest，例如，有时在doGet和doPost中有相同的操作，因此您只需要更改一个部分，它也会影响其他部分

希望这能解决你的问题。
Patrick
我想我们也可以在doGet（）中调用doPost（）方法

试试这个，告诉我们

希望它能帮助您。
请更新您的问题并添加一些代码，可能是servlet和JSP？！将@WebServlet（“/Authentication”）更改为@WebServlet（“/Registration”），或调用身份验证而不是注册
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sun.org.apache.xerces.internal.impl.xpath.regex.ParseException;

@WebServlet("/Registration")
public class Registration extends HttpServlet {

    /**
     * 
     */
    private static final long serialVersionUID = 3480182983284787792L;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String nom              = request.getParameter("nom");
        String prenom           = request.getParameter("prenom");
        String email            = request.getParameter("email");
        String sexe             = request.getParameter("sexe");
        Date dateNaissance;
        try {
            dateNaissance = new SimpleDateFormat("dd-MM-yyyy").parse(request.getParameter("dateNaissance"));
        } catch (ParseException e) {
            dateNaissance = new Date();
        }
        String pseudo           = request.getParameter("pseudo");
        String mdp              = request.getParameter("mdp");
        Boolean abonner         = request.getParameter("abonner") == "on" ? true : false;

        Compte c = new Compte(nom, prenom, email, sexe, dateNaissance, pseudo, mdp, abonner);

        request.setAttribute("compte", c);

        ServletContext context = getServletContext();
        context.getRequestDispatcher("signup_successful.jsp").forward(request, response);
    }


    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        processRequest(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        processRequest(req, resp);
    }


}