相关疑难解决方法(0)

我的第一个 Web 应用程序有问题。我使用 IntelliJ 作为 IDE，使用 Tomcat 作为 Web 服务器。我尝试访问的每个 servlet 都会抛出 404 错误。即使我复制了一些 youtube 教程，这似乎也很有魅力。

表单中的按钮将我发送到：http://localhost:8080/IUBHQuiz/login

你能告诉我有什么问题吗？我快疯了。

登录.java

package com.example.IUBHQuiz;

import java.io.*;
import javax.servlet.*;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import java.sql.*;

@WebServlet("/login")
public class login extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        String email = request.getParameter("fmail");
        String pass = request.getParameter("fpw");

        if(email.equals("j") && pass.equals("j"))
        {
            RequestDispatcher rs = request.getRequestDispatcher("/main.jsp");
            rs.forward(request, response);
        }
        else
        {
            out.println("Username or Password incorrect");

            RequestDispatcher …

使用以下资源在 Tomcat 9 服务器上运行时，出现错误 java.lang.ClassNotFoundException: jakarta.servlet.Filter

下面是pom.xml文件

<modelVersion>4.0.0</modelVersion>

<groupId>com.telusko</groupId>
<artifactId>demorest</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>demorest</name>

<build>
    <finalName>demorest</finalName>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.5.1</version>
            <inherited>true</inherited>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey</groupId>
            <artifactId>jersey-bom</artifactId>
            <version>${jersey.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet-core</artifactId>
        <!-- use the following artifactId if you don't need servlet 2.x compatibility -->
        <!-- artifactId>jersey-container-servlet</artifactId -->
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.inject</groupId>
        <artifactId>jersey-hk2</artifactId>
    </dependency>
    
    
    <!-- https://mvnrepository.com/artifact/com.sun.jersey/jersey-core -->

    
    <!-- uncomment this to get JSON support
    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-json-binding</artifactId>
    </dependency>
    
    -->
</dependencies> …