标签：find color ann style app 配置 let get name
Ehcache的基本配置说明我就不说了.小编记录一下在springboot中使用Ehcache的使用方法.
第一步:在classpath下引入配置文件ehcache.xml
代码如下:
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="ehcache.xsd"> <cache name="demo" maxEntriesLocalHeap="200" timeToLiveSeconds="600"> </cache> </ehcache>
第二步springboot开启对缓存的支持，你需要在springboot启动的main方法上配置@EnableCaching注解即可
第三步就是代码使用demo了.代码如下:
首先我们建一个实体类:
public class Thing { private Long id; public Long getId() { return id; } public void setId(Long id) { this.id = id; } }
然后我们注入一个service，模拟数据crud
@Service public class CacheDemoServiceImpl { private static Map<Long, Thing> data = new HashMap<>();//用与缓存模拟数据 /** * 缓存的key */ public static final String THING_ALL_KEY = "\"thing_all\""; /** * value属性表示使用哪个缓存策略，缓存策略在ehcache.xml */ public static final String DEMO_CACHE_NAME = "demo"; @CacheEvict(value = DEMO_CACHE_NAME, key = THING_ALL_KEY) public void create(Thing thing) { thing.setId(thing.getId()); data.put(thing.getId(), thing); } @Cacheable(value = DEMO_CACHE_NAME, key = "#thing.id") public Thing findById(Thing thing) { Long id=thing.getId(); System.err.println("没有走缓存！" + id); return data.get(id); } @Cacheable(value = DEMO_CACHE_NAME, key = THING_ALL_KEY) public List<Thing> findAll() { return Lists.newArrayList(data.values()); } @CachePut(value = DEMO_CACHE_NAME, key = "#thing.id") @CacheEvict(value = DEMO_CACHE_NAME, key = THING_ALL_KEY) public Thing update(Thing thing) { System.out.println(thing); data.put(thing.getId(), thing); return thing; } @CacheEvict(value = DEMO_CACHE_NAME) public void delete(Long id) { data.remove(id); } }
最后我们建立一个控制层来访问数据做测试:
@Autowired private CacheDemoServiceImpl cacheDemoServiceImpl; @RequestMapping("/test/add") public void test(@NotNull Long id) { Thing t=new Thing(); t.setId(id); cacheDemoServiceImpl.create(t); } @RequestMapping("/test/list") public JsonResult testlist() { List<Thing> list=cacheDemoServiceImpl.findAll(); return result(200,"",list); } @RequestMapping("/test/one") public JsonResult testfind(@NotNull Long id) { Thing t=new Thing(); t.setId(id); Thing tt=cacheDemoServiceImpl.findById(t); return result(200,"测试缓存",tt); } @RequestMapping("/test/delete") public void testdelete(@NotNull Long id) { cacheDemoServiceImpl.delete(id); }
先执行/test/add, 然后/test/list,其次/test/one,你最后会发现的/test/one 当参数传入相同的时候时，数据是从缓存中拿了.
付:下面是springboot不要Ehcache配置文件的注入方法:
import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurer; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.ehcache.EhCacheCacheManager; import org.springframework.cache.interceptor.CacheErrorHandler; import org.springframework.cache.interceptor.CacheResolver; import org.springframework.cache.interceptor.KeyGenerator; import org.springframework.cache.interceptor.SimpleKeyGenerator; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import net.sf.ehcache.config.CacheConfiguration; @Configuration @EnableCaching public class CachingConfiguration implements CachingConfigurer { @Bean(destroyMethod="shutdown") public net.sf.ehcache.CacheManager ehCacheManager() { CacheConfiguration cacheConfiguration = new CacheConfiguration(); cacheConfiguration.setName("demo"); cacheConfiguration.setMemoryStoreEvictionPolicy("LRU"); cacheConfiguration.setMaxEntriesLocalHeap(1000); net.sf.ehcache.config.Configuration config = new net.sf.ehcache.config.Configuration(); config.addCache(cacheConfiguration); return net.sf.ehcache.CacheManager.newInstance(config); } @Bean @Override public CacheManager cacheManager() { return new EhCacheCacheManager(ehCacheManager()); } @Bean @Override public KeyGenerator keyGenerator() { return new SimpleKeyGenerator(); } @Override public CacheResolver cacheResolver() { return null; } @Override public CacheErrorHandler errorHandler() { return null; } }
每天就进步一点点就可以了...不要想太多
参考:http://www.cnblogs.com/lic309/p/4072848.html
标签：find color ann style app 配置 let get name
原文地址：http://www.cnblogs.com/huzi007/p/6262729.html
