删除功能分析

 删除功能代码实现

public class DelUserServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取id
        String id = req.getParameter("id");
        //调用Service删除
        UserService service = new UserServiceImpl();
        service.deleteUser(id);

        //跳转到查询所有Servlet
        resp.sendRedirect(req.getContextPath()+"/UserListServlet");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}