从Tomcat 9.X到Tomcat 10. X以上

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
</dependency>

<dependencies>
    <!-- Jakarta Servlet API for Tomcat 10+ -->
    <dependency>
        <groupId>jakarta.servlet</groupId>
        <artifactId>jakarta.servlet-api</artifactId>
        <version>6.0.0</version> 
        <scope>provided</scope>
    </dependency>
</dependencies>

import javax.servlet.*;
import javax.servlet.http.*;

// 新版 (Jakarta)
import jakarta.servlet.*;
import jakarta.servlet.http.*;