springboot集成redis（mybatis、分布式session）
安装Redis请参考：《CentOS快速安装Redis》
一、springboot集成redis并实现DB与缓存同步
1.添加redis及数据库相关依赖（pom.xml）
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.4.7.RELEASE</version>
</dependency> <dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency> <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency> <dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
2.添加数据库、mybatis、redis相关配置（application.properties）
#数据库相关配置
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://192.168.15.129:3306/springboot?useUnicode=true&characterEncoding=utf-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456 #Mybatis相关配置
mybatis.type-aliases-package=com.lianjinsoft.pojo
mybatis.config-locations=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml #Redis相关配置
#数据库索引（默认为0）
spring.redis.database=0
#服务器地址
spring.redis.host=192.168.15.129
#服务器连接端
spring.redis.port=6379
#服务器连接密码（默认为空）
spring.redis.password=123456
#连接池最大连接数（使用负值表示没有限制）
spring.redis.pool.max-active=100
#连接池最大阻塞等待时间（使用负值表示没有限制）
spring.redis.pool.max-wait=10000
#连接池中的最大空闲连接
spring.redis.pool.max-idle=8
#连接池中的最小空闲连接
spring.redis.pool.min-idle=2
#连接超时时间（毫秒）
spring.redis.timeout=5000
3.springboot启动类，增加Mybatis扫描注解
@MapperScan("com.lianjinsoft.mapper")
@SpringBootApplication
public class RedisApplication {
public static void main(String[] args) {
SpringApplication.run(RedisApplication.class, args);
}
}
4.增加pojo数据表映射类
public class Order {
private Integer id;
private String orderNo;
private String orderName;
private BigDecimal amount;
private Date addTime;
//省略get、set
}
5.增加Mapper数据持久层操作方法
public interface OrderMapper {
void addOrder(Order order);
void delOrder(String orderNo);
void updOrder(Order order);
Order queryOrderByNo(String orderNo);
}
6.增加Mybatis主配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias alias="Integer" type="java.lang.Integer" />
<typeAlias alias="Long" type="java.lang.Long" />
<typeAlias alias="HashMap" type="java.util.HashMap" />
<typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
<typeAlias alias="ArrayList" type="java.util.ArrayList" />
<typeAlias alias="LinkedList" type="java.util.LinkedList" />
</typeAliases>
</configuration>
7.增加Mapper对应的配置文件及sql
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.lianjinsoft.mapper.OrderMapper" >
<resultMap id="BaseResultMap" type="com.lianjinsoft.pojo.Order" >
<id column="id" property="id" jdbcType="INTEGER" />
<result column="order_no" property="orderNo" jdbcType="VARCHAR" />
<result column="order_name" property="orderName" jdbcType="VARCHAR" />
<result column="amount" property="amount" jdbcType="DECIMAL"/>
<result column="add_time" property="addTime" jdbcType="TIMESTAMP" />
</resultMap> <sql id="Base_Column_List" >
id, order_no, order_name, amount, add_time
</sql> <select id="queryOrderByNo" parameterType="java.lang.String" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM orders
WHERE order_no = #{orderNo}
</select> <insert id="addOrder" parameterType="com.lianjinsoft.pojo.Order" >
INSERT INTO orders
(order_no,order_name,amount,add_time)
VALUES
(#{orderNo}, #{orderName}, #{amount}, #{addTime})
</insert> <delete id="delOrder" parameterType="java.lang.String" >
DELETE FROM
orders
WHERE
order_no =#{orderNo}
</delete> <update id="updOrder" parameterType="com.lianjinsoft.pojo.Order" >
UPDATE orders
SET order_name=#{orderName}
WHERE
id=#{id}
</update>
</mapper>
8.添加缓存配置（启用缓存）
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public KeyGenerator keyGenerator() {
return new KeyGenerator() {
@Override
public Object generate(Object target, Method method, Object... params) {
StringBuilder sf = new StringBuilder();
sf.append(target.getClass().getName());
sf.append("_");
sf.append(method.getName());
for (Object obj : params) {
sf.append("_");
sf.append(obj.toString());
}
return sf.toString();
}
};
} @Bean
public CacheManager cacheManager(RedisTemplate redisTemplate) {
return new RedisCacheManager(redisTemplate);
} @Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
9.增加OrderService接口及实现类
public interface OrderService {
void addOrder(Order order);
void delOrder(String orderNo);
void updOrder(Order order);
Order queryOrderByNo(String orderNo);
}
@Service
public class OrderServiceImpl implements OrderService{
private final String prefix = "order:"; @Autowired
private OrderMapper orderMapper; @Autowired
private RedisTemplate redisTemplate; @Override
public void addOrder(Order order) {
orderMapper.addOrder(order);
redisTemplate.opsForValue().set(prefix+order.getOrderNo(), order);
LogUtil.info("新增订单，添加缓存："+order);
} @Override
public void delOrder(String orderNo) {
if(redisTemplate.hasKey(prefix+orderNo)){
redisTemplate.delete(prefix+orderNo);
LogUtil.info("删除缓存数据："+orderNo);
}
orderMapper.delOrder(orderNo);
} @Override
public void updOrder(Order order) {
orderMapper.updOrder(order);
if(redisTemplate.hasKey(prefix+order.getOrderNo())){
redisTemplate.opsForValue().set(prefix+order.getOrderNo(), order);
LogUtil.info("更新缓存订单信息："+order);
}
} @Override
public Order queryOrderByNo(String orderNo) {
Order order = (Order)redisTemplate.opsForValue().get(prefix+orderNo);
if(order != null){
LogUtil.info("从缓存获取到数据："+order);
return order;
} order = orderMapper.queryOrderByNo(orderNo);
if(order != null){
redisTemplate.opsForValue().set(prefix+orderNo, order);
}
return order;
}
}
10.增加OrderServiceTests测试类（Junit）
@RunWith(SpringRunner.class)
@SpringBootTest
public class OrderServiceTests {
@Autowired
private OrderService orderService; @Test
public void test1_add() {
//添加订单
orderService.addOrder(new Order("100001", "XX手机", new BigDecimal("4999")));
} @Test
public void test2_query() {
//查询订单
orderService.queryOrderByNo("100001");
} @Test
public void test3_update() {
//先查询订单信息
Order order = orderService.queryOrderByNo("100001");
order.setOrderName("国民手机"); //更新DB及缓存
orderService.updOrder(order); //再次查询
orderService.queryOrderByNo("100001");
} @Test
public void test4_del() {
//删除DB及缓存
orderService.delOrder("100001"); //再次查询
orderService.queryOrderByNo("100001");
}
}
10.1）执行test1_add()方法
10:57:45.873 [main] INFO c.l.service.OrderServiceTests - Starting OrderServiceTests on LAPTOP-1DF7S904 with PID 8316 (started by lianjinsoft in E:\workspace\springboot\spring-boot-redis)
10:57:45.875 [main] INFO c.l.service.OrderServiceTests - No active profile set, falling back to default profiles: default
10:57:45.908 [main] INFO o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:57:45 CST 2018]; root of context hierarchy
10:57:46.233 [main] INFO o.s.d.r.c.RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
10:57:47.370 [main] WARN o.s.b.s.r.RedisStarterDeprecationWarningAutoConfiguration - spring-boot-starter-redis is deprecated as of Spring Boot 1.4, please migrate to spring-boot-starter-data-redis
10:57:47.399 [main] INFO c.l.service.OrderServiceTests - Started OrderServiceTests in 1.752 seconds (JVM running for 2.512)
10:57:47.931 [main] INFO com.lianjinsoft.util.LogUtil - 新增订单，添加缓存：Order [id=null, orderNo=100001, orderName=XX手机, amount=4999, addTime=Mon Apr 23 10:57:47 CST 2018]
10:57:47.939 [Thread-2] INFO o.s.c.a.AnnotationConfigApplicationContext - Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:57:45 CST 2018]; root of context hierarchy
从日志的第7行可以看出，订单信息已经添加成功。并添加到缓存中。
10.2）执行test2_query()方法
10:58:04.273 [main] INFO c.l.service.OrderServiceTests - Starting OrderServiceTests on LAPTOP-1DF7S904 with PID 20492 (started by lianjinsoft in E:\workspace\springboot\spring-boot-redis)
10:58:04.277 [main] INFO c.l.service.OrderServiceTests - No active profile set, falling back to default profiles: default
10:58:04.301 [main] INFO o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:04 CST 2018]; root of context hierarchy
10:58:04.618 [main] INFO o.s.d.r.c.RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
10:58:05.920 [main] WARN o.s.b.s.r.RedisStarterDeprecationWarningAutoConfiguration - spring-boot-starter-redis is deprecated as of Spring Boot 1.4, please migrate to spring-boot-starter-data-redis
10:58:05.953 [main] INFO c.l.service.OrderServiceTests - Started OrderServiceTests in 1.903 seconds (JVM running for 2.659)
10:58:06.101 [main] INFO com.lianjinsoft.util.LogUtil - 从缓存获取数据：Order [id=null, orderNo=100001, orderName=XX手机, amount=4999, addTime=Mon Apr 23 10:57:47 CST 2018]
10:58:06.109 [Thread-2] INFO o.s.c.a.AnnotationConfigApplicationContext - Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:04 CST 2018]; root of context hierarchy
从日志的第7行可以看出，查询信息从缓存中获取（没有查询数据库）。
10.3）执行test3_update()方法
10:58:17.172 [main] INFO c.l.service.OrderServiceTests - Starting OrderServiceTests on LAPTOP-1DF7S904 with PID 12316 (started by lianjinsoft in E:\workspace\springboot\spring-boot-redis)
10:58:17.172 [main] INFO c.l.service.OrderServiceTests - No active profile set, falling back to default profiles: default
10:58:17.207 [main] INFO o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:17 CST 2018]; root of context hierarchy
10:58:17.530 [main] INFO o.s.d.r.c.RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
10:58:18.679 [main] WARN o.s.b.s.r.RedisStarterDeprecationWarningAutoConfiguration - spring-boot-starter-redis is deprecated as of Spring Boot 1.4, please migrate to spring-boot-starter-data-redis
10:58:18.750 [main] INFO c.l.service.OrderServiceTests - Started OrderServiceTests in 1.809 seconds (JVM running for 2.553)
10:58:19.032 [main] INFO com.lianjinsoft.util.LogUtil - 从缓存获取数据：Order [id=null, orderNo=100001, orderName=XX手机, amount=4999, addTime=Mon Apr 23 10:57:47 CST 2018]
10:58:19.450 [main] INFO com.lianjinsoft.util.LogUtil - 更新缓存订单信息：Order [id=null, orderNo=100001, orderName=国民手机, amount=4999, addTime=Mon Apr 23 10:57:47 CST 2018]
10:58:19.454 [main] INFO com.lianjinsoft.util.LogUtil - 从缓存获取数据：Order [id=null, orderNo=100001, orderName=国民手机, amount=4999, addTime=Mon Apr 23 10:57:47 CST 2018]
10:58:19.458 [Thread-2] INFO o.s.c.a.AnnotationConfigApplicationContext - Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:17 CST 2018]; root of context hierarchy
从日志的第7~9行可以看出，订单先从缓存中获取，然后执行了更新DB、更新缓存，最后再从缓存中获取到了订单信息。
10.4）执行test4_del()方法
10:58:34.652 [main] INFO c.l.service.OrderServiceTests - Starting OrderServiceTests on LAPTOP-1DF7S904 with PID 7428 (started by lianjinsoft in E:\workspace\springboot\spring-boot-redis)
10:58:34.652 [main] INFO c.l.service.OrderServiceTests - No active profile set, falling back to default profiles: default
10:58:34.676 [main] INFO o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:34 CST 2018]; root of context hierarchy
10:58:34.997 [main] INFO o.s.d.r.c.RepositoryConfigurationDelegate - Multiple Spring Data modules found, entering strict repository configuration mode!
10:58:36.107 [main] WARN o.s.b.s.r.RedisStarterDeprecationWarningAutoConfiguration - spring-boot-starter-redis is deprecated as of Spring Boot 1.4, please migrate to spring-boot-starter-data-redis
10:58:36.140 [main] INFO c.l.service.OrderServiceTests - Started OrderServiceTests in 1.856 seconds (JVM running for 2.61)
10:58:36.281 [main] INFO com.lianjinsoft.util.LogUtil - 删除缓存数据：100001
10:58:36.689 [main] INFO com.lianjinsoft.util.LogUtil - 从数据库获取数据：null
10:58:36.693 [Thread-2] INFO o.s.c.a.AnnotationConfigApplicationContext - Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@306cf3ea: startup date [Mon Apr 23 10:58:34 CST 2018]; root of context hierarchy
从日志的第7、8行可以看出，订单信息已经从DB、缓存中删除了。
注意：
本案例只是简单的介绍如何将DB与缓存数据同步操作，并不一定适合您当前的业务需求。并且以上操作不能保证缓存与DB数据完全一致。
二、springboot集成redis并实现分布式session缓存
分布式session共享有很多方案，其中缓存托管就是主流一种实现。
1.添加session缓存相关依赖（pom.xml）
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
</dependency>
2.添加session配置（启用session缓存）
maxInactiveIntervalInSeconds: 设置session失效时间。
@Configuration
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 60*30)
public class SessionConfig {
}
3.测试
3.1）修改本地服务端口并启动，模拟分布式应用部署（application.properties）
#服务端口（8001、8002、8003）
server.port=8001
3.2）分别调用各应用接口，查看sessionId
3.3）查看redis缓存信息
如图：缓存中的sessionId与接口返回信息一致。
源代码：https://gitee.com/skychenjiajun/spring-boot
springboot集成redis（mybatis、分布式session）的更多相关文章
- SpringBoot集成Redis 一 分布式锁 与 缓存
1.添加依赖及配置(application.yml) <!-- 引入redis依赖 --> <dependency> <groupId>org.springfram ...
- Redis-基本概念、java操作redis、springboot整合redis，分布式缓存，分布式session管理等
NoSQL的引言 Redis数据库相关指令 Redis持久化相关机制 SpringBoot操作Redis Redis分布式缓存实现 Resis中主从复制架构和哨兵机制 Redis集群搭建 Redis实 ...
- springboot集成redis使用redis作为session报错ClassNotFoundException类RememberMeServices
springboot 集成redis使用redis作为缓存,会报错的问题. 错误信息: java.lang.IllegalStateException: Error processing condit ...
- 【springBoot】springBoot集成redis的key,value序列化的相关问题
使用的是maven工程 springBoot集成redis默认使用的是注解,在官方文档中只需要2步; 1.在pom文件中引入即可 <dependency> <groupId>o ...
- SpringBoot集成redis的key,value序列化的相关问题
使用的是maven工程 springBoot集成redis默认使用的是注解,在官方文档中只需要2步; 1.在pom文件中引入即可 <dependency> <groupId>o ...
- Windows环境下springboot集成redis的安装与使用
一,redis安装 首先我们需要下载Windows版本的redis压缩包地址如下: https://github.com/MicrosoftArchive/redis/releases 连接打开后如下 ...
- springBoot集成Redis遇到的坑(择库)源码分析为什么择库失败
提示: springboot提供了一套链接redis的api,也就是个jar包,用到的连接类叫做LettuceConnectionConfiguration,所以我们引入pom时是这样的 <de ...
- 使用Spring Session和Redis解决分布式Session跨域共享问题
http://blog.csdn.net/xlgen157387/article/details/57406162 使用Spring Session和Redis解决分布式Session跨域共享问题
- Tornado 自定义session，与一致性哈希 ，基于redis 构建分布式 session框架
Tornado 自定义session,与一致性哈希 ,基于redis 构建分布式 session import tornado.ioloop import tornado.web from myhas ...
随机推荐
- python 关键字的操作
声明:本文章默认使用的是python 3.6.1 1.要想当个牛逼的程序员,就要精通各种hello world的写法,当然,我不牛逼,只能用python去写^..^! print("Hell ...
- 基于ssm的poi反射bean实例
一:该例子是笔者在实际项目应用过程中,针对项目完成的一套基于poi的导入导出例子,其中一些与项目有关的代码大家直接替换成自己的需求即可. 二:笔者在项目中使用的是poi的XSSF,对应maven的po ...
- Swagger: 一个restful接口文档在线生成+功能测试软件
一.什么是 Swagger? Swagger 是一款RESTFUL接口的文档在线自动生成+功能测试功能软件.Swagger 是一个规范和完整的框架,用于生成.描述.调用和可视化 RESTful 风格的 ...
- intelj idea中JRebel激活
1.下载激活软件 https://github.com/ilanyu/ReverseProxy/releases/tag/v1.0 我这边下载的是: 2.双击运行 3.idea中, 不出意外,应该就激 ...
- Python入门之ATM+购物车代码版思维导图
该项目结合了ATM模版和购物车需求,整个思维导图用Python代码实现,使用思维导图可以清晰明了的看清整个框架: 过程中,用到了Python的知识有Python常用模块,Python常用内置包,log ...
- hdu 1880 魔咒字典
https://vjudge.net/problem/HDU-1880 题意:略 思路: 一开始就是想到了正确的思路,但是代码写炸了,死活过不了.这题嘛,就是建议一个魔咒与咒语的双向映射.首先用字符串 ...
- phpstorm 快捷键高效助手扩展 常用快捷键收集整理 2018-04-12 16:42:10
声明: 本文属于原创,未经博主许可,禁止任何形式转载! phpstorm 快捷键整理收集 以及高效复用代码快捷键扩展 常规快捷键大全请结合参考2篇博客: https://blog.csdn.net/y ...
- SpringMVC(八)：使用Servlet原生API作为Spring MVC hanlder方法的参数
在SpringMVC开发中,是有场景需要在Handler方法中直接使用ServletAPI. 在Spring MVC Handler的方法中都支持哪些Servlet API作为参数呢? --Respo ...
- issubclass判断前面是不是后面的子类
issubclass(sub,sup) 判断前面是不是后面的子类
- jacascript document对象
前言:这是笔者学习之后自己的理解与整理.如果有错误或者疑问的地方,请大家指正,我会持续更新! Document 类型表示文档,或文档的根节点,这个节点是隐藏的,没有具体的节点标签:而 html 是根标 ...