(三) springboot的本地redis簡要配置及使用案例
阿新 • • 發佈：2018-12-14
基於springboot開發中，對於快取資料獲取，重複或者延遲資料等，redis的使用就顯得方便很多。現在簡單的做本地redis的搭建。
（1） 下載window版本的redis安裝 (見我的資源下載)
配置：port根據要求，可改變，啟動redis-service.exe即啟動，啟動redis-cli.exe可進行介面語句操作，查詢
（2） sprigboot配置
application.properties配置：
# Redis資料庫索引（預設為0） spring.redis.database=0 ## Redis伺服器地址 spring.redis.host=127.0.0.1 ## 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.jedis.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.jedis.pool.max-wait=-1ms ## 連線池中的最大空閒連線 spring.redis.jedis.pool.max-idle=8 ## 連線池中的最小空閒連線 spring.redis.jedis.pool.min-idle=0 ## 連線超時時間（毫秒） spring.redis.jedis.timeout=0
（3） 增加redis工具類RedisCacheUtil和泛型介面RedisCacheServer
RedisCacheServer類：
package com.study.provider.cache; import java.util.Collection; import java.util.Map; import java.util.concurrent.TimeUnit; import java.util.function.Supplier; public interface RedisCacheServer { <T> void put(String key, T obj); <T> void put(String key, T obj, int timeout); <T> void put(String key, T obj, int timeout, TimeUnit unit); <T> T get(String key, Class<T> cls); <E,T extends Collection<E>> T get(String key, Class<E> cls, Class<T> collectionCls); <T> T putIfAbsent(String key, Class<T> cls, Supplier<T> supplier); <T> T putIfAbsent(String key, Class<T> cls, Supplier<T> supplier, int timeout); <E,T extends Collection<E>> T putIfAbsent(String key, Class<E> cls, Class<T> collectionCls, Supplier<T> supplier); boolean exists(String key); void del(String key); boolean expire(String key, long timeout, TimeUnit unit); boolean expire(String key, long timeout); void put(String key, String value); void put(String key, String value, int timeout); void put(String key, String value, int timeout, TimeUnit unit); String get(String key); void putHash(String key, Map<Object, Object> m); Map<Object, Object> getHash(String key); }
工具類RedisCacheUtil：
package com.study.provider.cache; import com.alibaba.fastjson.JSON; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.stereotype.Service; import java.util.Collection; import java.util.Map; import java.util.concurrent.TimeUnit; import java.util.function.Supplier; @Service public class RedisCacheUtil implements RedisCacheServer{ @Autowired private StringRedisTemplate redisTemplate; public <T> void put(String key, T obj) { redisTemplate.opsForValue().set(key, JSON.toJSONString(obj)); } public <T> void put(String key, T obj, int timeout) { put(key,obj,timeout, TimeUnit.MINUTES); } public <T> void put(String key, T obj, int timeout, TimeUnit unit) { redisTemplate.opsForValue().set(key, JSON.toJSONString(obj),timeout,unit); } public <T> T get(String key, Class<T> cls) { return JSON.parseObject(JSON.toJSONString(redisTemplate.opsForValue().get(key)), cls); } @Override public <E, T extends Collection<E>> T get(String key, Class<E> cls, Class<T> collectionCls) { return null; } /*** public <E, T extends Collection<E>> T get(String key, Class<E> cls, Class<T> collectionCls) { return JSON.parseArray(JSON.toJSONString(redisTemplate.opsForValue().get(key)), cls, collectionCls); }**/ public <T> T putIfAbsent(String key, Class<T> cls, Supplier<T> supplier) { T t=get(key,cls); if(null==t){ t=supplier.get(); if(null!=t) put(key,t); } return t; } public <T> T putIfAbsent(String key, Class<T> cls, Supplier<T> supplier, int timeout) { T t=get(key,cls); if(null==t){ t=supplier.get(); if(null!=t) put(key,t,timeout); } return t; } public <E, T extends Collection<E>> T putIfAbsent(String key, Class<E> cls, Class<T> collectionCls, Supplier<T> supplier) { T t=get(key,cls,collectionCls); if(null==t || t.isEmpty()){ t=supplier.get(); if(null!=t && t.size()>0) put(key,t); } return t; } public boolean exists(String key) { return redisTemplate.hasKey(key); } public void del(String key) { redisTemplate.delete(key); } public boolean expire(String key, long timeout, TimeUnit unit) { return redisTemplate.expire(key, timeout, unit); } public boolean expire(String key, long timeout) { return redisTemplate.expire(key, timeout, TimeUnit.MINUTES); } public void put(String key, String value) { redisTemplate.opsForValue().set(key, value); } public void put(String key, String value, int timeout) { put(key,value,timeout,TimeUnit.MINUTES); } public void put(String key, String value, int timeout, TimeUnit unit) { redisTemplate.opsForValue().set(key, value, timeout, unit); } public String get(String key) { return (String) redisTemplate.opsForValue().get(key); } public void putHash(String key, Map<Object,Object> m) { redisTemplate.opsForHash().putAll(key, m); } public Map<Object, Object> getHash(String key) { try{ return redisTemplate.opsForHash().entries(key); }catch(Exception e){ return null; } } }
（4） 使用案例：
package com.study.provider.controller;
import com.study.provider.cache.RedisCacheUtil;
import com.study.provider.mapping.IDesignMapping;
import com.study.provider.util.ResultUtils;
import com.study.provider.vo.DesignVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.Map;
@Controller
public class ProviderController {
@Autowired
private IDesignMapping designMapping;
@Autowired
private RedisCacheUtil redisCacheUtil;
@RequestMapping("/provider")
@ResponseBody
public Map<String, Object> provider(){
System.out.println("welcome to provider");
DesignVo arg0 = new DesignVo();
arg0.setDesignDesc("xiaoxin");
arg0.setDesignMethod("xiaoxin is a good boy");
arg0.setDesignType("xiaoxin is a love boy");
redisCacheUtil.put("testkey2",arg0);
//designMapping.saveDesignModel(arg0)
return ResultUtils.getSuccessResultData();
}
}(5) window可檢視
