Request应用

2022-01-23 17:58:42 作者：互联网

获取前端数据

请求转发

index.jsp

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

<%--${pageContext.request.contextPath}获取当前项目路径，需要导入jsp servlet的依赖包--%>
<form action="/s3/req" method="get">
    用户名：<input name="username" type="text"><br>
    密 码：<input name="password" type="password"><br>
    爱好：
    <input type="checkbox" name="hobbys" value="泡妞">泡妞
    <input type="checkbox" name="hobbys" value="K歌">K歌
    <input type="checkbox" name="hobbys" value="赛车">赛车

    <input type="submit">
</form>
</body>
</html>

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

        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));
		//请求转发
        req.getRequestDispatcher("login.jsp").forward(req,resp);
//        String a = req.getContextPath();
//        System.out.println(a);
    }

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

    }
}

3.注册servlet

标签：hobbys,String,resp,req,Request,System,应用,out
来源： https://blog.csdn.net/weixin_45259560/article/details/122629877