緩存就是一個(gè)存儲器，在技術(shù)選型中，常用?Redis?作為緩存數(shù)據(jù)庫。緩存主要是在獲取資源方便性能優(yōu)化的關(guān)鍵方面。Redis?是一個(gè)高性能的?key-value?數(shù)據(jù)庫，接下來通過本文給大家介紹Springboot框架整合添加redis緩存功能，感興趣的朋友一起看看吧

一：安裝Redis

因本人電腦是windows系統(tǒng)，從https://github.com/ServiceStack/redis-windows下載了兼容windows系統(tǒng)的redis

下載后直接解壓到自定義目錄，運(yùn)行cmd命令，進(jìn)入到這個(gè)文件夾，在這個(gè)文件夾下運(yùn)行下面命令，啟動redis服務(wù)器

redis-server redis.windows.conf

運(yùn)行下面命令進(jìn)行測試：redis-cli

二：添加Redis依賴

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-redis</artifactId>
   <version>1.4.5.RELEASE</version>
</dependency>

然后鼠標(biāo)右鍵選擇Maven→Reimport進(jìn)行依賴下載

三：添加Redis配置信息

在application.properties中添加

spring.redis.host=127.0.0.1

spring.redis.port=6379? ?

spring.redis.timeout=0

spring.redis.password=

四：創(chuàng)建RedisConfigurer

package com.example.demo.core.configurer;

import org.springframework.boot.context.properties.ConfigurationProperties;
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.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import redis.clients.jedis.JedisPoolConfig;

/**
 * @author 張瑤
 * @Description: redis配置
 * @date 2018/4/30 10:28
 */
@Configuration
@EnableCaching   //開啟緩存
public class RedisConfigurer extends CachingConfigurerSupport {

    @Bean
    @ConfigurationProperties(prefix="spring.redis")
    public JedisPoolConfig getRedisConfig(){
        JedisPoolConfig config = new JedisPoolConfig();
        return config;
    }

    @Bean
    @ConfigurationProperties(prefix="spring.redis")
    public JedisConnectionFactory getConnectionFactory(){
        JedisConnectionFactory factory = new JedisConnectionFactory();
        JedisPoolConfig config = getRedisConfig();
        factory.setPoolConfig(config);
        return factory;
    }


    @Bean
    public RedisTemplate<?, ?> getRedisTemplate(){
        RedisTemplate<?,?> template = new StringRedisTemplate(getConnectionFactory());
        return template;
    }
}

五：創(chuàng)建Redis常用方法

RedisService

package com.example.demo.service;

import java.util.List;

/**
 * @author 張瑤
 * @Description: redis常用方法
 * @date 2018/4/30 10:35
 */
public interface RedisService {

    /**
     * 設(shè)置給定 key 的值。如果 key 已經(jīng)存儲其他值， SET 就覆寫舊值，且無視類型。
     * @param key
     * @param value
     * @return
     */
    boolean set(String key, String value);

    /**
     * 獲取指定 key 的值。如果 key 不存在，返回 nil 。如果key 儲存的值不是字符串類型，返回一個(gè)錯(cuò)誤。
     * @param key
     * @return
     */
    String get(String key);

    /**
     * 設(shè)置 key 的過期時(shí)間。key 過期后將不再可用。
     * @param key
     * @param expire
     * @return
     */
    boolean expire(String key, long expire);

    /**
     * 存集合
     * @param key
     * @param list
     * @param <T>
     * @return
     */
    <T> boolean setList(String key, List<T> list);

    /**
     * 取集合
     * @param key
     * @param clz
     * @param <T>
     * @return
     */
    <T> List<T> getList(String key, Class<T> clz);

    /**
     * 將一個(gè)或多個(gè)值插入到列表頭部。 如果 key 不存在，一個(gè)空列表會被創(chuàng)建并執(zhí)行 LPUSH 操作。
     * 當(dāng) key 存在但不是列表類型時(shí)，返回一個(gè)錯(cuò)誤。
     * @param key
     * @param obj
     * @return
     */
    long lpush(String key, Object obj);

    /**
     * 將一個(gè)或多個(gè)值插入到列表的尾部(最右邊)。
     * 如果列表不存在，一個(gè)空列表會被創(chuàng)建并執(zhí)行 RPUSH 操作。 當(dāng)列表存在但不是列表類型時(shí)，返回一個(gè)錯(cuò)誤。
     * @param key
     * @param obj
     * @return
     */
    long rpush(String key, Object obj);

    /**
     * 移除并返回列表的第一個(gè)元素。
     * @param key
     * @return
     */
    String lpop(String key);

    /**
     * 刪除已存在的鍵。不存在的 key 會被忽略。
     * @param key
     * @return
     */
    long del(final String key);
}

RedisServiceImpl

package com.example.demo.service.impl;

import com.alibaba.fastjson.JSON;
import com.example.demo.service.RedisService;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * @author 張瑤
 * @Description: redis配置
 * @date 2018/4/30 10:38
 */
@Service
public class RedisServiceImpl implements RedisService {

    @Resource
    private RedisTemplate<String, ?> redisTemplate;

    @Override
    public boolean set(final String key, final String value) {
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                connection.set(serializer.serialize(key), serializer.serialize(value));
                return true;
            }
        });
        return result;
    }

    @Override
    public String get(final String key){
        String result = redisTemplate.execute(new RedisCallback<String>() {
            @Override
            public String doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                byte[] value =  connection.get(serializer.serialize(key));
                return serializer.deserialize(value);
            }
        });
        return result;
    }

    @Override
    public long del(final String key){
        long result = redisTemplate.execute(new RedisCallback<Long>() {
            @Override
            public Long doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                long value =  connection.del(serializer.serialize(key));
                return value;
            }
        });
        return result;
    }

    @Override
    public boolean expire(final String key, long expire) {
        return redisTemplate.expire(key, expire, TimeUnit.SECONDS);
    }

    @Override
    public <T> boolean setList(String key, List<T> list) {
        String value = JSON.toJSONString(list);
        return set(key,value);
    }

    @Override
    public <T> List<T> getList(String key,Class<T> clz) {
        String json = get(key);
        if(json!=null){
            List<T> list = JSON.parseArray(json, clz);
            return list;
        }
        return null;
    }

    @Override
    public long lpush(final String key, Object obj) {
        final String value = JSON.toJSONString(obj);
        long result = redisTemplate.execute(new RedisCallback<Long>() {
            @Override
            public Long doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                long count = connection.lPush(serializer.serialize(key), serializer.serialize(value));
                return count;
            }
        });
        return result;
    }

    @Override
    public long rpush(final String key, Object obj) {
        final String value = JSON.toJSONString(obj);
        long result = redisTemplate.execute(new RedisCallback<Long>() {
            @Override
            public Long doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                long count = connection.rPush(serializer.serialize(key), serializer.serialize(value));
                return count;
            }
        });
        return result;
    }

    @Override
    public String lpop(final String key) {
        String result = redisTemplate.execute(new RedisCallback<String>() {
            @Override
            public String doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                byte[] res =  connection.lPop(serializer.serialize(key));
                return serializer.deserialize(res);
            }
        });
        return result;
    }


}

六：接口測試

創(chuàng)建RedisController

package com.example.demo.controller;

import com.example.demo.core.ret.RetResponse;
import com.example.demo.core.ret.RetResult;
import com.example.demo.service.RedisService;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @author 張瑤
 * @Description:
 * @date 2018/4/30 11:28
 */
@RestController
@RequestMapping("redis")
public class RedisController {

    @Resource
    private RedisService redisService;

    @PostMapping("/setRedis")
    public RetResult<String> setRedis(String name) {
        redisService.set("name",name);
        return RetResponse.makeOKRsp(name);
    }

    @PostMapping("/getRedis")
    public RetResult<String> getRedis() {
        String name = redisService.get("name");
        return RetResponse.makeOKRsp(name);
    }


}

輸入http://localhost:8080/redis/setRedis

輸入http://localhost:8080/redis/getRedis

項(xiàng)目地址

碼云地址：https://gitee.com/beany/mySpringBoot

GitHub地址：https://github.com/MyBeany/mySpringBoot

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