这种功能如何实现,工具是eclipse和tomcat,最近正在做这个实训项目想请教一下大家
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- Code blocks 2022-12-24 11:00关注
package com.itheima; import com.itheima.mapper.UserMapper; import com.itheima.pojo.User; 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 javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; @WebServlet("/loginServlet") public class LoginServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //接收用户名和密码 String username = req.getParameter("username"); String password = req.getParameter("password"); //调用mybatis查询 //获取SqlSessionFactory对象 String resource = "mybatis-config.xml"; InputStream inputStream = Resources.getResourceAsStream(resource); SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream); //获取SqlSession SqlSession sqlSession = sqlSessionFactory.openSession(); //获取Mapper UserMapper userMapper = sqlSession.getMapper(UserMapper.class); //调用方法 User user = userMapper.select(username, password); //释放资源 sqlSession.close(); //判断user是否为null resp.setContentType("text/html;charset=utf-8"); PrintWriter writer = resp.getWriter(); if (user != null) { //登录成功 resp.sendRedirect("./main.html"); } else { //登录失败 resp.sendRedirect("./login.html"); } } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { } }
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