偷懶了幾天,好幾天沒寫springboot了。真的不是沒什麼可寫,是由於堅持作一件事真的很難。java
今天抽空弄了一個springboot整合redis的小例子。git
首先作好準備工做,在本地安裝一個redis,具體步驟能夠自行百度,而後啓動redis。出現下圖頁面就啓動成功了。web
而後新建項目,加入redis依賴,pom文件以下:redis
<?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>
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而後在application.properties加入redis配置:spring
##端口號
server.port=8888
# Redis數據庫索引(默認爲0)
spring.redis.database=0
# Redis服務器地址
spring.redis.host=localhost
# Redis服務器鏈接端口
spring.redis.port=6379
# Redis服務器鏈接密碼(默認爲空)
spring.redis.password=
#鏈接池最大鏈接數(使用負值表示沒有限制)
spring.redis.pool.max-active=8
# 鏈接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
# 鏈接池中的最大空閒鏈接
spring.redis.pool.max-idle=8
# 鏈接池中的最小空閒鏈接
spring.redis.pool.min-idle=0
# 鏈接超時時間(毫秒)
spring.redis.timeout=0
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RedisConfig配置類,其中@EnableCaching開啓註解數據庫
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//開啓緩存
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;
}
}
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因爲只是簡單整合,我只建立了一個RedisService來用來存取緩存數據,實際項目中能夠根據需求建立interface,impl等等,代碼以下:apache
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裏面查看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);
}
}
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實體類City:緩存
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;
}
}
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測試類CityControllerspringboot
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;
}
}
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到這裏配置基本上都完成了,而後啓動項目訪問http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都&cityId=18 bash
發現報錯了,看了一下後臺,以下
發現是實體類沒有序列化,而後給City類序列化,而後訪問http://localhost:8888/saveCity?cityName=北京&cityIntroduce=中國首都&cityId=18發現此次成功了。
而後查看redis,發現key值的編碼不對
在RedisService中加入
//更改在redis裏面查看key編碼問題
RedisSerializer redisSerializer =new StringRedisSerializer();
redisTemplate.setKeySerializer(redisSerializer);
複製代碼
在查看redis的key發現編碼正確了
源碼下載 :大老楊碼雲
我的網站:dalaoyang.cn