Request应用

Request应用 获取前端数据 请求转发

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>



<%--${pageContext.request.contextPath}获取当前项目路径，需要导入jsp servlet的依赖包--%>

public class Req extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");

        String name = req.getParameter("username");
        String pwd = req.getParameter("password");
        System.out.println(name+":"+pwd);
        String[] hobbys = req.getParameterValues("hobbys");
        System.out.println(Arrays.toString(hobbys));

        req.getRequestDispatcher("login.jsp").forward(req,resp);
    }

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

    }
}

3.注册servlet