JSP | 基础 | 中文字符的传递

设置传递格式：

request.setCharacterEncoding("utf-8");

中文字符解码：

import java.net.URLDecoder;

String format = URLDecoder.decode(request.getParameter("format"), "utf-8"); 

中文字符加码：

import java.net.URLEncoder;

String username = URLEncoder.encode(request.getParameter("username"), "UTF-8");

实例：

登陆后创建session：

<%@page import="java.net.*"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
    <%
        request.setCharacterEncoding("UTF-8");

        String username = URLEncoder.encode(request.getParameter("username"), "UTF-8");
        String password =URLEncoder.encode(request.getParameter("password"),"UTF-8") ;

        Cookie usernameCookie = new Cookie("username",username);
        Cookie passwordCookie = new Cookie("password",password);

        response.addCookie(usernameCookie);
        response.addCookie(passwordCookie);

        request.getRequestDispatcher("login_success.jsp").forward(request, response);
    %>

</body>
</html>

表单提交包含中文字符显示：

<%@page import="java.net.URLDecoder"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>

<%
    request.setCharacterEncoding("UTF-8");
    Cookie[] cookies = request.getCookies();
    String username = "";
    String password = "";

    for(Cookie cookie : cookies) {
        if("username".equals(cookie.getName()))
            username =URLDecoder.decode(cookie.getValue(),"utf-8") ;

        if("password".equals(cookie.getName()))
            password = cookie.getValue();

    }

 %>

    <h1 align="center">恭喜<%=username %>登录成功</h1>
    <hr>
    <div style="border: solid 1px;">
        <p> 用户名：<%=username %> </p>
        <p> 密码： <%=password %> </p>
    </div>

</body>
</html>