<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.luo</groupId>
<artifactId>redis_project</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<!-- spring版本号 -->
<spring.version>3.2.8.RELEASE</spring.version>
<!-- junit版本号 -->
<junit.version>4.10</junit.version>
</properties>
<dependencies>
<!-- 添加Spring依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<!--单元测试依赖 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!--spring单元测试依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<!-- Redis 相关依赖 -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.6.1.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.7.3</version>
</dependency>
</dependencies>
</project>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 自动扫描注解的bean -->
<context:component-scan base-package="com.luo.service" />
<!-- 引入properties配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:properties/*.properties</value>
<!--要是有多个配置文件,只需在这里继续添加即可 -->
</list>
</property>
</bean>
<!-- jedis 配置 -->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig" >
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxWaitMillis" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean >
<!-- redis服务器中心 -->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" >
<property name="poolConfig" ref="poolConfig" />
<property name="port" value="${redis.port}" />
<property name="hostName" value="${redis.host}" />
<!-- <property name="password" value="${redis.password}" /> -->
<property name="timeout" value="${redis.timeout}" ></property>
</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="com.luo.redis.cache.MethodCacheInterceptor" >
<property name="redisTemplate" ref="redisTemplate" />
</bean >
<!-- aop配置切点跟通知 -->
<bean id="methodCachePointCut" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice" ref="methodCacheInterceptor"/>
<property name="pattern" value=".*ServiceImpl.*getTimestamp"/>
</bean>
<bean id="redisTestService" class="com.luo.service.impl.RedisTestServiceImpl">
</bean>
<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"/>
</beans>
#redis中心 #绑定的主机地址 redis.host=127.0.0.1 #指定Redis监听端口,默认端口为6379 redis.port=6379 #授权密码(本例子没有使用) redis.password=123456 #最大空闲数:空闲链接数大于maxIdle时,将进行回收 redis.maxIdle=100 #最大连接数:能够同时建立的“最大链接个数” redis.maxActive=300 #最大等待时间:单位ms redis.maxWait=1000 #使用连接时,检测连接是否成功 redis.testOnBorrow=true #当客户端闲置多长时间后关闭连接,如果指定为0,表示关闭该功能 redis.timeout=10000
package com.luo.service;
public interface RedisTestService {
public String getTimestamp(String param);
}
package com.luo.service.impl;
import org.springframework.stereotype.Service;
import com.luo.service.RedisTestService;
@Service
public class RedisTestServiceImpl implements RedisTestService {
public String getTimestamp(String param) {
Long timestamp = System.currentTimeMillis();
return timestamp.toString();
}
}
package com.luo.redis.cache;
import java.io.Serializable;
import java.util.concurrent.TimeUnit;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
public class MethodCacheInterceptor implements MethodInterceptor {
private RedisTemplate<Serializable, Object> redisTemplate;
private Long defaultCacheExpireTime = 10l; // 缓存默认的过期时间,这里设置了10秒
public Object invoke(MethodInvocation invocation) throws Throwable {
Object value = null;
String targetName = invocation.getThis().getClass().getName();
String methodName = invocation.getMethod().getName();
Object[] arguments = invocation.getArguments();
String key = getCacheKey(targetName, methodName, arguments);
try {
// 判断是否有缓存
if (exists(key)) {
return getCache(key);
}
// 写入缓存
value = invocation.proceed();
if (value != null) {
final String tkey = key;
final Object tvalue = value;
new Thread(new Runnable() {
public void run() {
setCache(tkey, tvalue, defaultCacheExpireTime);
}
}).start();
}
} catch (Exception e) {
e.printStackTrace();
if (value == null) {
return invocation.proceed();
}
}
return value;
}
/**
* 创建缓存key
*
* @param targetName
* @param methodName
* @param arguments
*/
private String getCacheKey(String targetName, String methodName,
Object[] arguments) {
StringBuffer sbu = new StringBuffer();
sbu.append(targetName).append("_").append(methodName);
if ((arguments != null) && (arguments.length != 0)) {
for (int i = 0; i < arguments.length; i++) {
sbu.append("_").append(arguments[i]);
}
}
return sbu.toString();
}
/**
* 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 getCache(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 setCache(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;
}
}
package com.luo.baseTest;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
//指定bean注入的配置文件
@ContextConfiguration(locations = { "classpath:application.xml" })
//使用标准的JUnit @RunWith注释来告诉JUnit使用Spring TestRunner
@RunWith(SpringJUnit4ClassRunner.class)
public class SpringTestCase extends AbstractJUnit4SpringContextTests {
}
package com.luo.service;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import com.luo.baseTest.SpringTestCase;
public class RedisTestServiceTest extends SpringTestCase {
@Autowired
private RedisTestService redisTestService;
@Test
public void getTimestampTest() throws InterruptedException{
System.out.println("第一次调用:" + redisTestService.getTimestamp("param"));
Thread.sleep(2000);
System.out.println("2秒之后调用:" + redisTestService.getTimestamp("param"));
Thread.sleep(11000);
System.out.println("再过11秒之后调用:" + redisTestService.getTimestamp("param"));
}
}
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