springMvc18-cookievalue注解（显示cookie的值，默认必须有值）

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>SpringMVC01</display-name>

<!-- 处理中文乱码 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- SpringMVC控制器 -->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<!-- 主要就是DispatcherServlet这个servlet起到分发的作用，对请求进行控制分发 -->
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!-- 每个springmvc项目都要一个springmvc项目配置位置，下面配置springmvc配置文件的路径 -->
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springMVC-servlet.xml</param-value>
</init-param>
<!-- 当容器启动时立即启动 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<!-- 下面配置springmvc的过滤分发请求类型，可以是/ 或者*.action等 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>springmvc-servlet
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<!-- 定义要扫描 controller的包-->
<context:component-scan base-package="wormday.springmvc.helloworld" />

<mvc:default-servlet-handler />
<!-- 启动注解驱动 SpringMVC 功能 -->
<mvc:annotation-driven />

<!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 -->
<!--指定视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 视图的路径 -->
<property name="prefix" value="/WEB-INF/"/>
<!-- 视图名称后缀 -->
<property name="suffix" value=".jsp"/>
</bean>

</beans>HIcontroller类
package wormday.springmvc.helloworld;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model; // 这里导入了一个Model类
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping("/hi")
public class HiController {

@RequestMapping("/say")
public String say(Model model) { // 参数中传入Model
model.addAttribute("name","wormday"); // 指定Model的值
model.addAttribute("url","http://www.cnblogs.com/wormday/p/8435617.html"); // 指定Model的值
return "say";
}
@RequestMapping("/loginForm")
public String loginForm(){
return "login";
}
@RequestMapping("/hi")
public String loginFor(){
return "hi";
}

@RequestMapping(value = "/login",method = RequestMethod.POST)
public String loginXS(String username, String password){
System.out.println("执行登录");
System.out.println("username"+username);
System.out.println("password"+password);
return "redirect:hi";
}
@RequestMapping("/testcase")
public String testCookie(@CookieValue("JSESSIONID") String sessionId){
System.out.println(sessionId);
return "success";
}
}usercontroller类
package wormday.springmvc.helloworld;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
@RequestMapping("/hi")
//@RequestMapping("/list")

public class UserController {
/* @RequestMapping(value = "/list",method = RequestMethod.GET)
public String login(String username,String password){
System.out.println("方法1：参数直接获取");
System.out.println("username："+username);
System.out.println("password："+password);
return "list";
}*/
@RequestMapping(value = "/list",method = RequestMethod.GET)
public String listForm(
@RequestParam(value = "currentpage",required = false,defaultValue = "1")Integer currentpage,
@RequestParam(value = "pagesize",required = false,defaultValue = "10")Integer pagesize){
System.out.println("currentpage"+currentpage);
System.out.println("pagesize"+pagesize);
return "list";
}
}say.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
hello world,${name}
<br/>${url}</body>
</html>

复制代码login.jsp
<%--
Created by IntelliJ IDEA.
User: geyao
Date: 2019/11/6
Time: 19:57
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<form action="hi" method="post">
<label for="username">用户名<input type="text" id="username" name="username"></label>
<label for="password">密码<input type="text" id="password" name="password"></label>
<button>登录</button>
</form>
</body>
</html>hi.jsp
<%--
Created by IntelliJ IDEA.
User: geyao
Date: 2019/11/6
Time: 20:17
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
我是歌谣，登录成功
</body>
</html>list.jsp
<%--
Created by IntelliJ IDEA.
User: geyao
Date: 2019/11/6
Time: 19:57
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>我是表单</h1>

</body>
</html>success.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
成功</body>
</html>