request请求转发、response重定向跳转

1.用request方法将 Servlet01页面跳转到Servlet02页面

public class Servlet01 extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //向request01存值
        request.setAttribute("name","詹姆斯");
        //请求转发
        request.getRequestDispatcher("/Servlet02").forward(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}

public class Servlet02 extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //request02取值  取得是object的值 需要强转
        String name = (String)request.getAttribute("name");
        //解决响应乱码
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().write(name);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}

运行结果如下：

2.response重定向跳转

public class Servlet01 extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //跳转
        response.sendRedirect("/WEB03/Servlet02");
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}

public class Servlet02 extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.getWriter().write("okokok");
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}