结合前端，在本地运行实现登陆操作。
将在输入框的数据传给服务器，服务器再通过调用数据库的数据进行对比，实现简单的判断逻辑
到这里的我就感觉内容多了起来，在之前连接数据库，数据库操作的时候，跟着教程走，只是知道简单的用法也能在之后自行配置
这里的话数据库等操作变成了一个环节，还有其他很多新的操作，一下子不好上手的servlet等去花时间去学
简单实现servlet
package org.example.servlet;import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.SneakyThrows;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.example.entity.User;
import org.example.mapper.UserMapper;import java.io.IOException;
import java.util.Arrays;
import java.util.Map;@WebServlet("/login")
public class LoginServlet extends HttpServlet {SqlSessionFactory factory;@SneakyThrows@Overridepublic void init() throws ServletException {factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader("mybatis-config.xml"));}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//首先设置一下响应类型resp.setContentType("text/html;charset=UTF-8");//获取POST请求携带的表单数据Map<String, String[]> map = req.getParameterMap();//判断表单是否完整if(map.containsKey("username") && map.containsKey("password")) {String username = req.getParameter("username");String password = req.getParameter("password");try(SqlSession session = factory.openSession(true)) {UserMapper userMapper= session.getMapper(UserMapper.class);User user = userMapper.getUser(username,password);if(user != null) {resp.getWriter().write("用户"+username+"登录成功");}else{resp.getWriter().write("您登录的用户密码错误或者账户不存在");}}//权限校验（待完善）}else {resp.getWriter().write("错误，您的表单数据不完整！");}}}
```java
