实训笔记7

最新推荐文章于 2024-01-26 20:28:58 发布

原创最新推荐文章于 2024-01-26 20:28:58 发布 · 126 阅读

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CC 4.0 BY-SA版权

本文介绍了一个简单的用户注册功能实现，包括用户信息的添加和查询。使用Java语言，通过JdbcTemplate操作数据库，实现用户数据的持久化。

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注册功能
public interface UserDao {
void addUser(User user);
void getUser(String name,String pass);

}

public class UserDaoImpl implements UserDao {
private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDs());
public void addUser(User user) {
String sql = “insert into user values (null,?,?)”;
template.update(sql, user.getName(), user.getPass());
}
public void getUser(String name,String pass) {
String sql = "select * from user where name=? ";
template.query(sql, new BeanPropertyRowMapper(User.class), name,pass);
}
}

public class RegServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding(“UTF-8”);
String name = request.getParameter(“username”);
String pas = request.getParameter(“pass”);
User user = new User(null, name, pas);
System.out.println(user);
UserDao dao = new UserDaoImpl();
dao.addUser(user);
request.setAttribute(“msg”, user.getName())
request.getRequestDispatcher(“login.jsp”).forward(request, response);
}