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。
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
发现报错了,看了一下后台,如下
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
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
源码下载 :大老杨码云
个人网站:https://dalaoyang.cn
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。
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
发现报错了,看了一下后台,如下
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
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
源码下载 :大老杨码云
个人网站:https://dalaoyang.cn