springboot 에서 사용자 정의 2 급 캐 시 를 어떻게 사용 합 니까?
26981 단어 springboot캐 시
springboot 에 침입 하지 않 기 위해 캐 시 를 사용 하 는 방식 입 니 다.캐 시 와 관련 된 두 개의 주 해 를 정의 하 였 습 니 다.다음 과 같 습 니 다.
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface Cacheable {
String value() default "";
String key() default "";
// Class
Class<?> type() default Exception.class;
}
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface CacheEvict {
String value() default "";
String key() default "";
}
본론 으로 돌아 가면 주해 가 있 으 면 주해 처리 류 가 필요 합 니 다.여기 서 저 는 op 의 절단면 으로 차단 처 리 를 했 습 니 다.원생 의 실현 도 크게 다 르 지 않 습 니 다.절단면 처리 류 는 다음 과 같다.
import com.xuanwu.apaas.core.multicache.annotation.CacheEvict;
import com.xuanwu.apaas.core.multicache.annotation.Cacheable;
import com.xuanwu.apaas.core.utils.JsonUtil;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.json.JSONArray;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.LocalVariableTableParameterNameDiscoverer;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
/**
*
* @author rongdi
*/
@Aspect
@Component
public class MultiCacheAspect {
private static final Logger logger = LoggerFactory.getLogger(MultiCacheAspect.class);
@Autowired
private CacheFactory cacheFactory;
// ， @EnableCaching
private boolean cacheEnable;
@Pointcut("@annotation(com.xuanwu.apaas.core.multicache.annotation.Cacheable)")
public void cacheableAspect() {
}
@Pointcut("@annotation(com.xuanwu.apaas.core.multicache.annotation.CacheEvict)")
public void cacheEvict() {
}
@Around("cacheableAspect()")
public Object cache(ProceedingJoinPoint joinPoint) {
//
Object[] args = joinPoint.getArgs();
// result
Object result = null;
// ，
if(!cacheEnable){
try {
result = joinPoint.proceed(args);
} catch (Throwable e) {
logger.error("",e);
}
return result;
}
//
Class returnType = ((MethodSignature) joinPoint.getSignature()).getReturnType();
//
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
//
Cacheable ca = method.getAnnotation(Cacheable.class);
// el key
String key = parseKey(ca.key(),method,args);
Class<?> elementClass = ca.type();
//
String name = ca.value();
try {
// ehcache
String cacheValue = cacheFactory.ehGet(name,key);
if(StringUtils.isEmpty(cacheValue)) {
// ehcache ， redis
cacheValue = cacheFactory.redisGet(name,key);
if(StringUtils.isEmpty(cacheValue)) {
// redis
//
result = joinPoint.proceed(args);
// redis
cacheFactory.redisPut(name,key,serialize(result));
} else {
// redis
//
if(elementClass == Exception.class) {
result = deserialize(cacheValue, returnType);
} else {
result = deserialize(cacheValue, returnType,elementClass);
}
}
// ehcache
cacheFactory.ehPut(name,key,serialize(result));
} else {
//
if(elementClass == Exception.class) {
result = deserialize(cacheValue, returnType);
} else {
result = deserialize(cacheValue, returnType,elementClass);
}
}
} catch (Throwable throwable) {
logger.error("",throwable);
}
return result;
}
/**
* ，
* @param joinPoint
* @return
* @throws Throwable
*
*/
@Around("cacheEvict()")
public Object evictCache(ProceedingJoinPoint joinPoint) throws Throwable {
//
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
//
Object[] args = joinPoint.getArgs();
//
CacheEvict ce = method.getAnnotation(CacheEvict.class);
// el key
String key = parseKey(ce.key(),method,args);
//
String name = ce.value();
//
cacheFactory.cacheDel(name,key);
return joinPoint.proceed(args);
}
/**
* key
* key ， SPEL
* @return
*/
private String parseKey(String key,Method method,Object [] args){
if(StringUtils.isEmpty(key)) return null;
// ( Spring )
LocalVariableTableParameterNameDiscoverer u = new LocalVariableTableParameterNameDiscoverer();
String[] paraNameArr = u.getParameterNames(method);
// SPEL key
ExpressionParser parser = new SpelExpressionParser();
//SPEL
StandardEvaluationContext context = new StandardEvaluationContext();
// SPEL
for(int i=0;i<paraNameArr.length;i++){
context.setVariable(paraNameArr[i], args[i]);
}
return parser.parseExpression(key).getValue(context,String.class);
}
//
private String serialize(Object obj) {
String result = null;
try {
result = JsonUtil.serialize(obj);
} catch(Exception e) {
result = obj.toString();
}
return result;
}
//
private Object deserialize(String str,Class clazz) {
Object result = null;
try {
if(clazz == JSONObject.class) {
result = new JSONObject(str);
} else if(clazz == JSONArray.class) {
result = new JSONArray(str);
} else {
result = JsonUtil.deserialize(str,clazz);
}
} catch(Exception e) {
}
return result;
}
// , List<xxx>
private Object deserialize(String str,Class clazz,Class elementClass) {
Object result = null;
try {
if(clazz == JSONObject.class) {
result = new JSONObject(str);
} else if(clazz == JSONArray.class) {
result = new JSONArray(str);
} else {
result = JsonUtil.deserialize(str,clazz,elementClass);
}
} catch(Exception e) {
}
return result;
}
public void setCacheEnable(boolean cacheEnable) {
this.cacheEnable = cacheEnable;
}
}
import com.xuanwu.apaas.core.multicache.CacheFactory;
import com.xuanwu.apaas.core.multicache.MultiCacheAspect;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;
import java.util.Map;
/**
* spring ， @EnableCaching
* @author rongdi
*/
@Component
public class ContextRefreshedListener implements ApplicationListener<ContextRefreshedEvent> {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
// Spring ， （mvc ）
if(event.getApplicationContext().getParent()==null){
// @EnableCaching
Map<String,Object> beans = event.getApplicationContext().getBeansWithAnnotation(EnableCaching.class);
if(beans != null && !beans.isEmpty()) {
MultiCacheAspect multiCache = (MultiCacheAspect)event.getApplicationContext().getBean("multiCacheAspect");
multiCache.setCacheEnable(true);
}
}
}
}
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.xuanwu.apaas.core.multicache.subscriber.MessageSubscriber;
import org.springframework.cache.CacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.adapter.MessageListenerAdapter;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.util.HashMap;
import java.util.Map;
@Configuration
public class MultiCacheConfig {
@Bean
public CacheManager cacheManager(RedisTemplate redisTemplate) {
RedisCacheManager rcm = new RedisCacheManager(redisTemplate);
// ( )
Map<String, Long> expires = new HashMap<>();
expires.put("ExpOpState",0L);
expires.put("ImpOpState",0L);
rcm.setExpires(expires);
rcm.setDefaultExpiration(600);
return rcm;
}
@Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
StringRedisSerializer redisSerializer = new StringRedisSerializer();
template.setValueSerializer(redisSerializer);
template.afterPropertiesSet();
return template;
}
/**
* redis
* redis ， ，
*
* @param connectionFactory
* @param listenerAdapter
* @return
*/
@Bean
public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
MessageListenerAdapter listenerAdapter) {
RedisMessageListenerContainer container = new RedisMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
// redis.uncache
container.addMessageListener(listenerAdapter, new PatternTopic("redis.uncache"));
// container messageListener
return container;
}
/**
* ， ，
* @param receiver
* @return
*/
@Bean
MessageListenerAdapter listenerAdapter(MessageSubscriber receiver) {
// messageListenerAdapter ， “handle”
return new MessageListenerAdapter(receiver, "handle");
}
}
import com.xuanwu.apaas.core.multicache.CacheFactory;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class MessageSubscriber {
private static final Logger logger = LoggerFactory.getLogger(MessageSubscriber.class);
@Autowired
private CacheFactory cacheFactory;
/**
* redis ， ehcache
* @param message name_key
*/
public void handle(String message){
logger.debug("redis.ehcache:"+message);
if(StringUtils.isEmpty(message)) {
return;
}
String[] strs = message.split("#");
String name = strs[0];
String key = null;
if(strs.length == 2) {
key = strs[1];
}
cacheFactory.ehDel(name,key);
}
}
import com.xuanwu.apaas.core.multicache.publisher.MessagePublisher;
import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Element;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.RedisConnectionFailureException;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import java.io.InputStream;
/**
*
* @author rongdi
*/
@Component
public class CacheFactory {
private static final Logger logger = LoggerFactory.getLogger(CacheFactory.class);
@Autowired
private RedisTemplate redisTemplate;
@Autowired
private MessagePublisher messagePublisher;
private CacheManager cacheManager;
public CacheFactory() {
InputStream is = this.getClass().getResourceAsStream("/ehcache.xml");
if(is != null) {
cacheManager = CacheManager.create(is);
}
}
public void cacheDel(String name,String key) {
// redis
redisDel(name,key);
// ehcache , ，
// ehDel(name,key);
if(cacheManager != null) {
// ，
messagePublisher.publish(name, key);
}
}
public String ehGet(String name,String key) {
if(cacheManager == null) return null;
Cache cache=cacheManager.getCache(name);
if(cache == null) return null;
cache.acquireReadLockOnKey(key);
try {
Element ele = cache.get(key);
if(ele == null) return null;
return (String)ele.getObjectValue();
} finally {
cache.releaseReadLockOnKey(key);
}
}
public String redisGet(String name,String key) {
HashOperations<String,String,String> oper = redisTemplate.opsForHash();
try {
return oper.get(name, key);
} catch(RedisConnectionFailureException e) {
// ， ， redis
logger.error("connect redis error ",e);
return null;
}
}
public void ehPut(String name,String key,String value) {
if(cacheManager == null) return;
if(!cacheManager.cacheExists(name)) {
cacheManager.addCache(name);
}
Cache cache=cacheManager.getCache(name);
// key ， key ， synchronized(key.intern()){}
cache.acquireWriteLockOnKey(key);
try {
cache.put(new Element(key, value));
} finally {
//
cache.releaseWriteLockOnKey(key);
}
}
public void redisPut(String name,String key,String value) {
HashOperations<String,String,String> oper = redisTemplate.opsForHash();
try {
oper.put(name, key, value);
} catch (RedisConnectionFailureException e) {
// ， ， redis
logger.error("connect redis error ",e);
}
}
public void ehDel(String name,String key) {
if(cacheManager == null) return;
Cache cache = cacheManager.getCache(name);
if(cache != null) {
// key ，
if(StringUtils.isEmpty(key)) {
cacheManager.removeCache(name);
} else {
cache.remove(key);
}
}
}
public void redisDel(String name,String key) {
HashOperations<String,String,String> oper = redisTemplate.opsForHash();
try {
// key ，
if(StringUtils.isEmpty(key)) {
redisTemplate.delete(name);
} else {
oper.delete(name,key);
}
} catch (RedisConnectionFailureException e) {
// ， ， redis
logger.error("connect redis error ",e);
}
}
}
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.lang3.StringUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.*;
public class JsonUtil {
private static ObjectMapper mapper;
static {
mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
false);
}
/**
* json
*
* @param obj
* @return
* @throws Exception
*/
public static String serialize(Object obj) throws Exception {
if (obj == null) {
throw new IllegalArgumentException("obj should not be null");
}
return mapper.writeValueAsString(obj);
}
/**
， JSONArray List<User>
*/
public static <T> T deserialize(String jsonStr, Class<?> collectionClass,
Class<?>... elementClasses) throws Exception {
JavaType javaType = mapper.getTypeFactory().constructParametrizedType(
collectionClass, collectionClass, elementClasses);
return mapper.readValue(jsonStr, javaType);
}
/**
* json
* @param src json
* @param t class
* @return
* @throws Exception
*/
public static <T> T deserialize(String src, Class<T> t) throws Exception {
if (src == null) {
throw new IllegalArgumentException("src should not be null");
}
if("{}".equals(src.trim())) {
return null;
}
return mapper.readValue(src, t);
}
}
@Cacheable(value = "bo",key="#session.productVersionCode+''+#session.tenantCode+''+#objectcode")
@CacheEvict(value = "bo",key="#session.productVersionCode+''+#session.tenantCode+''+#objectcode")
"org.springframework.boot:spring-boot-starter-redis:1.4.2.RELEASE",
'net.sf.ehcache:ehcache:2.10.4',
"org.json:json:20160810"이 내용에 흥미가 있습니까?
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