前一段时间开发一个报表缓存的项目，最近想把部分数据缓存到redis里，正好学习一下redis。
首先是框架部分的配置文件。
1.spring-mvc.xml
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->
<context:component-scan base-package="com.dwl.rep.controller" />
<!-- 默认的注解映射 -->
<mvc:annotation-driven />
<!--静态资源处理 -->
<mvc:default-servlet-handler/>
<!--避免IE执行AJAX时，返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->
</list>
</property>
</bean>
<!-- 定义跳转的文件的前后缀 ，视图模式配置-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- jsp路径 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默认编码 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 文件大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 内存中的最大值 -->
<property name="maxInMemorySize" value="40960" />
</bean>
<!-- 启动任务调度 -->
<bean id="JobsInitializingBean" class="com.dwl.rep.common.quartz.JobsInitializingBean" ></bean>
</beans>2.spring-mybatis.xml
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:cache="http://www.springframework.org/schema/cache"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.dwl.rep" />
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
<!-- 引入配置文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
<value>classpath:redis.properties</value>
</list>
</property>
<property name="ignoreUnresolvablePlaceholders" value="true" />
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}"></property>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}"></property>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}"></property>
</bean>
<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:com/dwl/rep/dao/mapper/*.xml"></property>
<!-- PageHelper分页插件 -->
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageHelper">
<property name="properties">
<value>
dialect=mysql
</value>
</property>
</bean>
</array>
</property>
</bean>
<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.dwl.rep.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 注册工具类 -->
<bean id="beanUtil" class="com.dwl.rep.common.quartz.BeanUtil" lazy-init="false"></bean>
<!--启用缓存注解-->
<cache:annotation-driven cache-manager="cacheManager"/>
<!--缓存管理器-->
<bean id="cacheManager" class="org.springframework.cache.support.SimpleCacheManager">
<property name="caches">
<set>
<!--自定义的redis缓存操作实现-->
<bean class="com.dwl.rep.common.RedisCache">
<property name="name" value="myCache"/>
<property name="redisTemplate" ref="redisTemplate"/>
</bean>
</set>
</property>
</bean>
<!--redis连接池配置-->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}"/>
<property name="maxTotal" value="${redis.maxTotal}"/>
<property name="testOnBorrow" value="${redis.testOnBorrow}"/>
</bean>
<!--redis连接工厂配置-->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.host}"/>
<property name="port" value="${redis.port}"/>
<property name="password" value="${redis.pass}"/>
<property name="poolConfig" ref="poolConfig"/>
<property name="usePool" value="true"/>
</bean>
<!--redis操作模板-->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="connectionFactory"/>
</bean>
</beans>3.redis.properties
redis.host=localhost
redis.port=6379
redis.pass=
redis.maxTotal=100
redis.maxIdle=100
redis.maxActive=200
redis.maxWait=1000
redis.testOnBorrow=true 4.pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.dwl.rep</groupId>
<artifactId>reports</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>reports Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<!-- spring版本号 -->
<spring.version>4.2.6.RELEASE</spring.version>
<!-- mybatis版本号 -->
<mybatis.version>3.3.0</mybatis.version>
<!-- log4j日志文件管理包版本 -->
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<!-- 表示开发的时候引入，发布的时候不会加载此包 -->
<scope>test</scope>
</dependency>
<!-- spring核心包 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${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-webmvc</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-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 导入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSTL标签类 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- 格式化对象，方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j.version}</version>
</dependency>
<!-- log end -->
<!-- 映入JSON -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.1.0</version>
</dependency>
<!-- 上传组件包 -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.4.Final</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.23</version>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.8.3</version>
</dependency>
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.1</version>
</dependency>
<!-- redis -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
<build>
<finalName>reports</finalName>
</build>
</project>
这里强调一下。spring和spring-data-redis不同版本之间会有冲突，大家要注意一下。
项目配置好后实现Cache接口。
package com.dwl.rep.common;
import org.springframework.cache.Cache;
import org.springframework.cache.support.SimpleValueWrapper;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.SerializationUtils;
public class RedisCache implements Cache {
private RedisTemplate<String, Object> redisTemplate;
private String name;
public RedisTemplate<String, Object> getRedisTemplate() {
return redisTemplate;
}
public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
this.redisTemplate = redisTemplate;
}
public void setName(String name) {
this.name = name;
}
@Override
public void clear() {
redisTemplate.execute((RedisCallback<String>) connection -> {
connection.flushDb();
return null;
});
}
@Override
public void evict(Object key) {
final String keyf = key.toString();
redisTemplate.execute((RedisCallback<Long>) connection -> connection.del(keyf.getBytes()));
}
@Override
public ValueWrapper get(Object key) {
final String keyf = key.toString();
Object object;
object = redisTemplate.execute((RedisCallback<Object>) connection -> {
byte[] key1 = keyf.getBytes();
byte[] value = connection.get(key1);
if (value == null) {
return null;
}
return SerializationUtils.deserialize(value);
});
return (object != null ? new SimpleValueWrapper(object) : null);
}
@Override
public <T> T get(Object arg0, Class<T> arg1) {
return null;
}
@Override
public String getName() {
return this.name;
}
@Override
public Object getNativeCache() {
return this.redisTemplate;
}
@Override
public void put(Object key, Object value) {
final String keyf = key.toString();
final Object valuef = value;
final long liveTime = 86400;
redisTemplate.execute((RedisCallback<Long>) connection -> {
byte[] keyb = keyf.getBytes();
byte[] valueb = SerializationUtils.serialize(valuef);
connection.set(keyb, valueb);
if (liveTime > 0) {
connection.expire(keyb, liveTime);
}
return 1L;
});
}
@Override
public ValueWrapper putIfAbsent(Object arg0, Object arg1) {
// TODO Auto-generated method stub
return null;
}
}
接下来就是基于注解的基本操作，这里介绍三个最基本的注解。以代码为例。
package com.dwl.rep.service;
import java.util.Date;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import com.dwl.rep.dao.ChartInfoMapper;
import com.dwl.rep.dao.DataInfoMapper;
import com.dwl.rep.pojo.ChartInfo;
@Service("chartService")
public class ChartService {
@Resource
private ChartInfoMapper chartInfoMapper;
@Resource
private DataInfoMapper dataInfoMapper;
public List<ChartInfo> getChartList(){
return chartInfoMapper.selectList();
}
public List<ChartInfo> getChartCacheList(){
return chartInfoMapper.selectCacheList();
}
/**
* 查询操作，value为RedisCache中name的值（xml中注入）
* key为redis中键值
* 第一次查询时去数据库中，再放入redis，之后都去redis中取值
* @param id
* @return
*/
@Cacheable(value="myCache",key="#id")
public ChartInfo getChartById(String id) {
return chartInfoMapper.selectByPrimaryKey(id);
}
/**
* 更新操作，value为RedisCache中name的值（xml中注入）
* key为redis中键值
* 每次更新数据库和redis中的值
* @param chartInfo
* @return
*/
@CachePut(value="myCache",key="#chartInfo.chartId")
public int addChartInfo(ChartInfo chartInfo){
chartInfo.setUpdateTime(new Date());
return chartInfoMapper.insertSelective(chartInfo);
}
/**
* 删除操作，value为RedisCache中name的值（xml中注入）
* 删除redis中以id为key的值
* @param id
* @return
*/
@CacheEvict(value="myCache",key="#id")
public int deleteChartInfo(String id){
return chartInfoMapper.deleteByPrimaryKey(id);
}
}
其他更详细的使用方法大家可以自行摸索，剩下的也不知道说啥了，拜拜。