Spring-Session+Redis實現session共享
1、新增依賴
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>2.0.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
<!-- spring-session-data-redis 依賴包 -->
<dependency>
<groupId>io.lettuce</groupId>
<artifactId>lettuce-core</artifactId>
<version>5.1.0.RC1</version>
</dependency>2、配置
spring-mvc.xml:
<!-- RedisHttpSessionConfiguration -->
<bean
class="org.springframework.session.data.redis.config.annotation.web.http.RedisHttpSessionConfiguration">
<property name="maxInactiveIntervalInSeconds" value="${redis.session.timeout}" /> <!-- session過期時間,單位是秒 -->
</bean>
<!--LettuceConnectionFactory -->
<bean
class="org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory"
p:host-name="127.0.0.1" p:port="6379" p:password="meander" />
web.xml新增攔截器
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext*.xml</param-value>
</context-param><!-- 這個filter 要放在第一個 -->
<filter>
<filter-name>springSessionRepositoryFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSessionRepositoryFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping>
3、使用spring-session
只要使用標準的servlet api呼叫session，在底層就會通過Spring Session得到的，並且會儲存到Redis或其他你所選擇的資料來源中。
這裡我們寫個測試類LoginController：
@RequestMapping("/login")
public ModelAndView login(HttpServletRequest request, HttpServletResponse response) {
Map<String, Object> model = new HashMap<String, Object>();
String userName = request.getParameter("userName");
String password = request.getParameter("password");
HttpSession session = request.getSession(true);
String p = request.getParameter("p");
if(StringUtils.isNotEmpty(p) || StringUtils.isEmpty((String)session.getAttribute("p"))) {
session.setAttribute("p", p);
}
return new ModelAndView("login", model);
}
然後寫一個login.jsp頁面：
<html>
<body>
<div><% String url = request.getLocalAddr() + ":" + request.getLocalPort(); %></div>
<div><%= url %></div>
<div>傳入引數：${p}</div>
</body>
</html>
啟動兩個tomcat，一個通過http://127.0.0.1:8080/login?p=yori訪問,
另一個通過http://127.0.0.1:8085/login
