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- <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false"%>
- <html>
- <head>
- <title>登录</title>
- </head>
- <body>
- <h1>登录</h1>
- <div style="text-align: center">
- <%--这里表单表示的意思:以post方式提交表单,提交到login请求--%>
- <form action="${pageContext.request.contextPath}/login" method="post">
- 用户名:<input type="text" name="username"><br>
- 密码:<input type="password" name="password"><br>
- 爱好:
- <input type="checkbox" value="游戏" name="hobbys" >游戏
- <input type="checkbox" value="敲代码" name="hobbys" >敲代码
- <input type="checkbox" value="唱歌" name="hobbys" >唱歌
- <input type="checkbox" value="看电影" name="hobbys" >看电影
- <br>
- <input type="submit">
- </form>
- </div>
-
-
- </body>
- </html>
- <%@ page contentType="text/html;charset=UTF-8" language="java" %>
- <html>
- <head>
- <title>成功</title>
- </head>
- <body>
- <h1>登陆成功</h1>
- </body>
- </html>
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import java.io.IOException;
- import java.util.Arrays;
-
- public class LoginServlet extends HttpServlet {
- @Override
- protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- String username = req.getParameter("username");
- String password=req.getParameter("password");
- String[] hobbys = req.getParameterValues("hobbys");
- System.out.println("==============================");
- System.out.println(username);
- System.out.println(password);
- System.out.println(Arrays.toString(hobbys));
- System.out.println("==============================");
-
- //通过请求转发 请求转发不需要带项目名字,直接相对URL 重定向才需要/r
- resp.setCharacterEncoding("utf-8");
- //这里的/代表当前的web应用
- req.getRequestDispatcher("/success.jsp").forward(req,resp);//可以是相对路径也可以是绝对路径
- //this.getServletContext().getRequestDispatcher(url);这里的Url只能是绝对路径
- }
-
- @Override
- protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
- doGet(req, resp);
- }
- }
- <servlet>
- <servlet-name>LoginServlet</servlet-name>
- <servlet-class>com.huang.servlet.LoginServlet</servlet-class>
- </servlet>
- <servlet-mapping>
- <servlet-name>LoginServlet</servlet-name>
- <url-pattern>/login</url-pattern>
- </servlet-mapping>
请求跳转后还是在/login页面,只不过内容变成了success.jsp中的页面
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