1.pom文件
<!--redis-->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.1.0</version>
</dependency>
2.Redis.xml文件
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!--引入Redis配置文件 需要的时候进行配置-->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config/redis.properties</value>
</list>
</property>
</bean>
<!--引入Redis配置文件 方式二-->
<!-- <context:property-placeholder location="classpath:properties/redis.properties" ignore-unresolvable="true"/> -->
<!-- jedis 连接池配置 -->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxActive" value="10" />
<property name="maxIdle" value="10"/><!-- "${redis.maxIdle}" -->
<property name="maxWait" value="1000"/><!--${redis.maxWait} -->
<property name="testOnBorrow" value="true"/><!-- ${redis.testOnBorrow} -->
</bean>
<!-- redis连接工厂 -->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="poolConfig" ref="poolConfig"/>
<property name="port" value="${redis.port}"/><!--${redis.port} -->
<property name="hostName" value="${redis.ip}"/>
<!-- <property name="password" value="${redis.pass}"/> -->
<property name="timeout" value="100000"></property><!-- ${redis.timeout} -->
</bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="connectionFactory"/>
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
</property>
</bean>
<!-- cache配置 -->
<bean id="methodCacheInterceptor" class="cn.com.scooper.interceptor.MethodCacheInterceptor">
<property name="redisUtil" ref="redisUtil"/>
<property name="defaultCacheExpireTime" value="${redis.cacheExpireTime}"/><!-- ${redis.cacheExpireTime} -->
<property name="targetNamesList">
<list>
<value></value>
</list>
</property>
<property name="methodNamesList">
<list>
<value>getAccountStatus</value>
</list>
</property>
</bean>
<bean id="redisUtil" class="cn.com.scooper.utils.RedisUtil">
<property name="redisTemplate" ref="redisTemplate"/>
</bean>
<!--配置切面拦截方法 -->
<aop:config >
<aop:pointcut id="controllerMethodPointcut" expression="execution(* cn.com.scooper.impl..*.*(..))"/>
<aop:advisor advice-ref="methodCacheInterceptor" pointcut-ref="controllerMethodPointcut"/>
</aop:config>
</beans>
3.Redis配置文件 redis.properties
redis.host=127.0.0.1
redis.port=6379
redis.maxIdle=100
redis.maxWait=1000
redis.testOnBorrow=true
redis.timeout=100000
defaultCacheExpireTime=3600
redis.cacheExpireTime=3600
4.创建拦截器
package cn.com.scooper.interceptor;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import cn.com.scooper.common.annotation.ClearInterceptor;
import cn.com.scooper.common.annotation.NotToCache;
import cn.com.scooper.common.constant.CommonConstant;
import cn.com.scooper.utils.RedisUtil;
import java.util.List;
/**
* Redis缓存过滤器
* 主要经过以下步骤：
1.查看当前方法是否在我们自定义的方法中，如果不是的话就直接返回，不进入拦截器。
2.之后利用反射获取的类名、方法名、参数生成redis的key。
3.用key在redis中查询是否已经有缓存。
4.有缓存就直接返回缓存内容，不再继续查询数据库。
5.如果没有缓存就查询数据库并将返回信息加入到redis中。
*
*/
public class MethodCacheInterceptor implements MethodInterceptor {
private RedisUtil redisUtil;
private List<String> targetNamesList; // 禁用缓存的类名列表
private List<String> methodNamesList; // 禁用缓存的方法列表
private String defaultCacheExpireTime; // 缓存默认的过期时间
@Override
public Object invoke(MethodInvocation invocation) throws Throwable {
Object value = null;
String targetName = invocation.getThis().getClass().getName();
String methodName = invocation.getMethod().getName();
if (!isAddCache(targetName, methodName)) {
// 跳过缓存返回结果
return invocation.proceed();
}
Object[] arguments = invocation.getArguments();
String key = creatCacheKey(targetName, methodName, arguments);
try {
// 判断是否有缓存
if (redisUtil.exists(key)) {
return redisUtil.get(key);
}
// 写入缓存
value = invocation.proceed();
if (invocation.getMethod().getAnnotation(NotToCache.class) == null && value != null ) {
final String tkey = key;
final Object tvalue = value;
new Thread(new Runnable() {
@Override
public void run() {
if(Long.parseLong(defaultCacheExpireTime) > 0){
redisUtil.set(tkey, tvalue, Long.parseLong(defaultCacheExpireTime));
}else{
redisUtil.set(tkey, tvalue);
}
}
}).start();
}else if(invocation.getMethod().getAnnotation(NotToCache.class) != null ){
redisUtil.removePattern(CommonConstant.KEY_PREFIX+CommonConstant.KEY_SPLIT_CHAR+targetName+"*");
}
} catch (Exception e) {
e.printStackTrace();
if (value == null) {
return invocation.proceed();
}
}
return value;
}
/**
* 是否加入缓存
*
* @return
*/
private boolean isAddCache(String targetName, String methodName) {
boolean flag = true;
if (targetNamesList.contains(targetName)
|| methodNamesList.contains(methodName) || targetName.contains("$$EnhancerBySpringCGLIB$$")) {
flag = false;
}
return flag;
}
/**
* 创建缓存key
*
* @param targetName
* @param methodName
* @param arguments
*/
private String creatCacheKey(String targetName, String methodName,Object[] arguments) {
StringBuffer sbu = new StringBuffer(CommonConstant.KEY_PREFIX);
sbu.append(CommonConstant.KEY_SPLIT_CHAR).append(targetName).append(CommonConstant.KEY_SPLIT_CHAR).append(methodName);
if ((arguments != null) && (arguments.length != 0)) {
for (int i = 0; i < arguments.length; i++) {
sbu.append(CommonConstant.KEY_SPLIT_CHAR).append(arguments[i]);
}
}
return sbu.toString();
}
public void setRedisUtil(RedisUtil redisUtil) {
this.redisUtil = redisUtil;
}
public void setTargetNamesList(List<String> targetNamesList) {
this.targetNamesList = targetNamesList;
}
public void setMethodNamesList(List<String> methodNamesList) {
this.methodNamesList = methodNamesList;
}
public void setDefaultCacheExpireTime(String defaultCacheExpireTime) {
this.defaultCacheExpireTime = defaultCacheExpireTime;
}
}
5.Redis工具类
package cn.com.scooper.utils;
import java.io.Serializable;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
/**
* Redis工具类
*/
public class RedisUtil {
private RedisTemplate<Serializable, Object> redisTemplate;
/**
* 批量删除对应的value
*
* @param keys
*/
public void remove(final String... keys) {
for (String key : keys) {
remove(key);
}
}
/**
* 批量删除key
*
* @param pattern
*/
public void removePattern(final String pattern) {
Set<Serializable> keys = redisTemplate.keys(pattern);
if (keys.size() > 0){
for (Serializable key : keys) {
redisTemplate.delete(key);
}
}
}
/**
* 删除对应的value
*
* @param key
*/
public void remove(final String key) {
if (exists(key)) {
redisTemplate.delete(key);
}
}
/**
* 判断缓存中是否有对应的value
*
* @param key
* @return
*/
public boolean exists(final String key) {
return redisTemplate.hasKey(key);
}
/**
* 读取缓存
*
* @param key
* @return
*/
public Object get(final String key) {
Object result = null;
ValueOperations<Serializable, Object> operations = redisTemplate
.opsForValue();
result = operations.get(key);
return result;
}
/**
* 写入缓存
*
* @param key
* @param value
* @return
*/
public boolean set(final String key, Object value) {
boolean result = false;
try {
ValueOperations<Serializable, Object> operations = redisTemplate
.opsForValue();
operations.set(key, value);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* 写入缓存
*
* @param key
* @param value
* @return
*/
public boolean set(final String key, Object value, Long expireTime) {
boolean result = false;
try {
ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
operations.set(key, value);
redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
public void setRedisTemplate(
RedisTemplate<Serializable, Object> redisTemplate) {
this.redisTemplate = redisTemplate;
}
}
