偷懒了几天，好几天没写springboot了。真的不是没什么可写，是因为坚持做一件事真的很难。
今天抽空弄了一个springboot整合redis的小例子。
首先做好准备工作，在本地安装一个redis，具体步骤可以自行百度，然后启动redis。出现下图页面就启动成功了。
image
然后新建项目，加入redis依赖，pom文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<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.dalaoyang</groupId>
<artifactId>springboot_redis</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot_redis</name>
<description>springboot_redis</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
然后在application.properties加入redis配置：
##端口号
server.port=8888
# Redis数据库索引（默认为0）
spring.redis.database=0
# Redis服务器地址
spring.redis.host=localhost
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=
#连接池最大连接数（使用负值表示没有限制）
spring.redis.pool.max-active=8
# 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=-1
# 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=0
# 连接超时时间（毫秒）
spring.redis.timeout=0
RedisConfig配置类，其中@EnableCaching开启注解
package com.dalaoyang.config;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
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;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.config
* @email yangyang@dalaoyang.cn
* @date 2018/4/18
*/
@Configuration
@EnableCaching//开启缓存
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public CacheManager cacheManager(RedisTemplate<?,?> redisTemplate) {
CacheManager cacheManager = new RedisCacheManager(redisTemplate);
return cacheManager;
}
@Bean
public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, String> redisTemplate = new RedisTemplate<String, String>();
redisTemplate.setConnectionFactory(factory);
return redisTemplate;
}
}
由于只是简单整合，我只创建了一个RedisService来用来存取缓存数据，实际项目中可以根据需求创建interface，impl等等，代码如下：
package com.dalaoyang.service;
import javax.annotation.Resource;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Service;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.service
* @email yangyang@dalaoyang.cn
* @date 2018/4/18
*/
@Service
public class RedisService {
@Resource
private RedisTemplate<String,Object> redisTemplate;
public void set(String key, Object value) {
//更改在redis里面查看key编码问题
RedisSerializer redisSerializer =new StringRedisSerializer();
redisTemplate.setKeySerializer(redisSerializer);
ValueOperations<String,Object> vo = redisTemplate.opsForValue();
vo.set(key, value);
}
public Object get(String key) {
ValueOperations<String,Object> vo = redisTemplate.opsForValue();
return vo.get(key);
}
}
实体类City：
package com.dalaoyang.entity;
import java.io.Serializable;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.Entity
* @email 397600342@qq.com
* @date 2018/4/7
*/
public class City implements Serializable {
private int cityId;
private String cityName;
private String cityIntroduce;
public City(int cityId, String cityName, String cityIntroduce) {
this.cityId = cityId;
this.cityName = cityName;
this.cityIntroduce = cityIntroduce;
}
public City(String cityName, String cityIntroduce) {
this.cityName = cityName;
this.cityIntroduce = cityIntroduce;
}
public City() {
}
public int getCityId() {
return cityId;
}
public void setCityId(int cityId) {
this.cityId = cityId;
}
public String getCityName() {
return cityName;
}
public void setCityName(String cityName) {
this.cityName = cityName;
}
public String getCityIntroduce() {
return cityIntroduce;
}
public void setCityIntroduce(String cityIntroduce) {
this.cityIntroduce = cityIntroduce;
}
}
测试类CityController
package com.dalaoyang.controller;
import com.dalaoyang.entity.City;
import com.dalaoyang.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.controller
* @email 397600342@qq.com
* @date 2018/4/7
*/
@RestController
public class CityController {
@Autowired
private RedisService redisService;
//http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中国首都&cityId=1
@GetMapping(value = "saveCity")
public String saveCity(int cityId,String cityName,String cityIntroduce){
City city = new City(cityId,cityName,cityIntroduce);
redisService.set(cityId+"",city);
return "success";
}
//http://localhost:8888/getCityById?cityId=1
@GetMapping(value = "getCityById")
public City getCity(int cityId){
City city = (City) redisService.get(cityId+"");
return city;
}
}
到这里配置基本上都完成了，然后启动项目访问http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中国首都&cityId=18
image
发现报错了，看了一下后台，如下
image
发现是实体类没有序列化，然后给City类序列化，然后访问http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中国首都&cityId=18发现这次成功了。
然后查看redis，发现key值的编码不对
image
在RedisService中加入
//更改在redis里面查看key编码问题
RedisSerializer redisSerializer =new StringRedisSerializer();
redisTemplate.setKeySerializer(redisSerializer);
在查看redis的key发现编码正确了
image
源码下载 ：大老杨码云
个人网站：https://dalaoyang.cn
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