spring缓存机制-@CachePut的用法(四)

package com.ilucky.spring.cache; import java.util.Map; import java.util.Map.Entry; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.ilucky.spring.cache.model.User; import com.ilucky.spring.cache.service.UserService; /** * @author IluckySi * @date 20140614 * 测试spring缓存机制是否生效. */ public class MainTest { public static void main(String[] args) { //加载ClassPath路径下的spring配置文件, 并获取service bean. ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring-cache.xml"); UserService userService = context.getBean("userService", UserService.class); System.out.println("service bean: " + userService); //添加三个用户, 然后查询并输出. userService.add(new User("1", "Ilucky1", "pwd1")); userService.add(new User("2", "Ilucky2", "pwd2")); userService.add(new User("3", "Ilucky3", "pwd3")); Map<String, User> map = userService.getAll(); for(Entry<String, User> entry : map.entrySet()) { System.out.println(entry.getValue()); } //验证@Cacheable和CachePut的区别, CachePut既保证方法被调用,同时保证结果被缓存. Map<String, User> map2 = userService.getAll(); for(Entry<String, User> entry : map2.entrySet()) { System.out.println(entry.getValue()); } } } /** spring缓存分为两种:方法和数据,如果方法被清除了,需要重新从数据库获取数据放入缓存,另外只有方法加入了缓存才可以获取缓存中的数据. @Cacheable(value = "data") public Map<String, User> getAll() { 输出结果: service bean: com.ilucky.spring.cache.service.impl.UserServiceImpl@17ec9f7 UserService: method- add(User user) UserDao method- add(User user) UserService: method- add(User user) UserDao method- add(User user) UserService: method- add(User user) UserDao method- add(User user) UserService: method-getAll() UserDao method- getAll() 记录日志--调用接口等操作! 3-Ilucky3-pwd3 2-Ilucky2-pwd2 1-Ilucky1-pwd1 3-Ilucky3-pwd3 2-Ilucky2-pwd2 1-Ilucky1-pwd1 @CachePut(value = "data") service bean: com.ilucky.spring.cache.service.impl.UserServiceImpl@fd918a UserService: method- add(User user) UserDao method- add(User user) UserService: method- add(User user) UserDao method- add(User user) UserService: method- add(User user) UserDao method- add(User user) UserService: method-getAll() UserDao method- getAll() 记录日志--调用接口等操作! 3-Ilucky3-pwd3 2-Ilucky2-pwd2 1-Ilucky1-pwd1 UserService: method-getAll() UserDao method- getAll() 记录日志--调用接口等操作! 3-Ilucky3-pwd3 2-Ilucky2-pwd2 1-Ilucky1-pwd1 */