out对象
表单提交的方式：
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>JSP内置对象-request</title> </head> <body> <h1>request内置对象</h1> <% request.setCharacterEncoding("utf-8");//解决中文乱码问题； 无法解决URL传参传述中文出现乱码的问题 request.setAttribute("password", "123456");//键值对保存 %> 用户名：<%=request.getParameter("userName")%><br> 爱好：<% if (request.getParameterValues("favorite") != null) { String[] favorite = request.getParameterValues("favorite"); for (int i = 0; i < favorite.length; i++) { out.println(favorite[i] + " "); } } %><br> 密码：<%=request.getAttribute("password") %><br> 请求体的MIME类型：<%=request.getContentType() %><br> 协议类型及版本号：<%=request.getProtocol() %><br> 服务器主机名：<%=request.getServerName() %><br> 服务器端口名：<%=request.getServerPort() %><br> 请求文件的长度：<%=request.getContentLength() %><br> 请求客户端的IP地址：<%=request.getRemoteAddr() %><br> 请求的真实路径：<%=request.getRealPath("neizhiRequest.jsp") %><br> 请求的上下文路径：<%=request.getContextPath() %><br> </body> </html>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Insert title here</title> </head> <body> <h1>用户注册</h1> <hr> <form action="neizhiRequest.jsp" name="regForm" method="post"> <table> <tr> <td>用户名:</td> <td><input type="text" name="userName"></td> </tr> <tr> <td>爱好</td> <td><input type="checkbox" name="favorite" value="read">读书 <input type="checkbox" name="favorite" value="music">音乐 <input type="checkbox" name="favorite" value="movie">电影 <input type="checkbox" name="favorite" value="internet">上网</td> </tr> <tr> <td colspan="2"><input type="submit" value="提交"></td> </tr> </table> </form> <br> <br> <a href="neizhiRequest.jsp?userName=李四">测试URL传参数</a> </body> </html>