偷懶了幾天，好幾天沒寫springboot了。真的不是沒什麼可寫，是因為堅持做一件事真的很難。
今天抽空弄了一個springboot整合redis的小例子。
首先做好準備工作，在本地安裝一個redis，具體步驟可以自行百度，然後啟動redis。出現下圖頁面就啟動成功了。
然後新建專案，加入redis依賴，pom檔案如下：
<?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>
複製程式碼然後在application.properties加入redis配置：
##埠號
server.port=8888
# Redis資料庫索引（預設為0）
spring.redis.database=0
# Redis伺服器地址
spring.redis.host=localhost
# Redis伺服器連線埠
spring.redis.port=6379
# Redis伺服器連線密碼（預設為空）
spring.redis.password=
#連線池最大連線數（使用負值表示沒有限制）
spring.redis.pool.max-active=8
# 連線池最大阻塞等待時間（使用負值表示沒有限制）
spring.redis.pool.max-wait=-1
# 連線池中的最大空閒連線
spring.redis.pool.max-idle=8
# 連線池中的最小空閒連線
spring.redis.pool.min-idle=0
# 連線超時時間（毫秒）
spring.redis.timeout=0
複製程式碼RedisConfig配置類，其中@EnableCaching開啟註解
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//開啟快取
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;
}
}
複製程式碼由於只是簡單整合，我只建立了一個RedisService來用來存取快取資料，實際專案中可以根據需求建立interface，impl等等，程式碼如下：
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裡面檢視key編碼問題
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);
}
}
複製程式碼實體類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;
}
}
複製程式碼測試類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=中國首都&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;
}
}
複製程式碼到這裡配置基本上都完成了，然後啟動專案訪問http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都&cityId=18
發現報錯了，看了一下後臺，如下
發現是實體類沒有序列化，然後給City類序列化，然後訪問http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都&cityId=18發現這次成功了。
然後檢視redis，發現key值的編碼不對
在RedisService中加入
//更改在redis裡面檢視key編碼問題
RedisSerializer redisSerializer =new StringRedisSerializer();
redisTemplate.setKeySerializer(redisSerializer);
複製程式碼在檢視redis的key發現編碼正確了
原始碼下載 ：大老楊碼雲
個人網站：dalaoyang.cn