本文主要是介绍request应用及问题,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
模拟登录
public class LoginServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
String username = req.getParameter("username");
String pwd = req.getParameter("pwd");
//getParameterValues可以接受一个数组可以遍历取出也可增强for(前端复选项)
String[] hobbies = req.getParameterValues("hobbies");
System.out.println("======================");
System.out.println(username);
System.out.println(pwd);
//后台接收中文乱码问题
System.out.println(Arrays.toString(hobbies));
System.out.println("======================");
//通过请求转发
// 这里的/代表当天的web应用
req.getRequestDispatcher("/success.jsp").forward(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
jsp代码
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>登录</title>
</head>
<body>
<h1>登录</h1>
<div style="text-align: center">
<form action="${pageContext.request.contextPath}/login" method="post">
用户名:<input type="text" name="username"/><br/>
密码:<input type="password" name="pwd"/><br/>
爱好:
<input type="checkbox" name="hobbies" value="看电影"/>看电影
<input type="checkbox" name="hobbies" value="阅读"/>阅读
<input type="checkbox" name="hobbies" value="爬山"/>爬山
<input type="checkbox" name="hobbies" value="摄影"/>摄影
<br/>
<input type="submit"/>
</form>
</div>
</body>
</html>
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