SpringBoot2.x整合Redis 分布式集群

文章目录

- - 1. maven依赖
  - 2. RedisConfig
  - 3. RedisUtils
  - 4. application.yml
  - 5. 单元测试
  - 6. redis 客户端查看

1. maven依赖

  <!--redis Start--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!-- redis lettuce 依赖commons-pool  --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId></dependency><!--redis End-->

2. RedisConfig

package com.gblfy.config;import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;/**** redis配置类**/
@Configuration
public class RedisConfig {@Bean@SuppressWarnings("all")public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();redisTemplate.setConnectionFactory(redisConnectionFactory);Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);ObjectMapper objectMapper = new ObjectMapper();objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);jackson2JsonRedisSerializer.setObjectMapper(objectMapper);StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();// key采用String的序列化方式redisTemplate.setKeySerializer(stringRedisSerializer);// hash的key也采用String的序列化方式redisTemplate.setHashKeySerializer(stringRedisSerializer);// valuevalue采用jackson序列化方式redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);// hash的value采用jackson序列化方式redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);//开启事务支持redisTemplate.setEnableTransactionSupport(true);redisTemplate.afterPropertiesSet();return redisTemplate;}
}

3. RedisUtils

package com.gblfy.utils;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;/*** Redis工具类** @author 共通组* @date 2019年2月25日*/
@Component
public final class RedisUtils {@Autowiredprivate RedisTemplate<String, Object> redisTemplate;// =============================common============================/**** 指定缓存失效时间** @param key  键* @param time 时间(秒)* @return*/public boolean expire(String key, long time) {try {if (time > 0) {redisTemplate.expire(key, time, TimeUnit.SECONDS);}return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 根据key 获取过期时间** @param key 键 不能为null* @return 时间(秒) 返回0代表为永久有效*/public long getExpire(String key) {return redisTemplate.getExpire(key, TimeUnit.SECONDS);}/**** 判断key是否存在** @param key 键* @return true 存在 false不存在*/public boolean hasKey(String key) {try {return redisTemplate.hasKey(key);} catch (Exception e) {e.printStackTrace();return false;}}/**** 删除缓存** @param key 可以传一个值 或多个*/@SuppressWarnings("unchecked")public void del(String... key) {if (key != null && key.length > 0) {if (key.length == 1) {redisTemplate.delete(key[0]);} else {redisTemplate.delete(CollectionUtils.arrayToList(key));}}}// ============================String=============================/**** 普通缓存获取** @param key 键* @return 值**/public Object get(String key) {return key == null ? null : redisTemplate.opsForValue().get(key);}/**** 普通缓存放入** @param key   键* @param value 值* @return true成功 false失败**/public boolean set(String key, Object value) {try {redisTemplate.opsForValue().set(key, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 普通缓存放入并设置时间** @param key   键* @param value 值* @param time  时间(秒) time要大于0 如果time小于等于0 将设置无限期* @return true成功 false 失败**/public boolean set(String key, Object value, long time) {try {if (time > 0) {redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);} else {set(key, value);}return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 递增** @param key   键* @param delta 要增加几(大于0)* @return**/public long incr(String key, long delta) {if (delta < 0) {throw new RuntimeException("递增因子必须大于0");}return redisTemplate.opsForValue().increment(key, delta);}/**** 递减** @param key   键* @param delta 要减少几(小于0)* @return**/public long decr(String key, long delta) {if (delta < 0) {throw new RuntimeException("递减因子必须大于0");}return redisTemplate.opsForValue().increment(key, -delta);}// ================================Map=================================/**** HashGet** @param key  键 不能为null* @param item 项 不能为null* @return 值**/public Object hget(String key, String item) {return redisTemplate.opsForHash().get(key, item);}/**** 获取hashKey对应的所有键值** @param key 键* @return 对应的多个键值**/public Map<Object, Object> hmget(String key) {return redisTemplate.opsForHash().entries(key);}/**** HashSet** @param key 键* @param map 对应多个键值* @return true 成功 false 失败**/public boolean hmset(String key, Map<String, Object> map) {try {redisTemplate.opsForHash().putAll(key, map);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** HashSet 并设置时间** @param key  键* @param map  对应多个键值* @param time 时间(秒)* @return true成功 false失败**/public boolean hmset(String key, Map<String, Object> map, long time) {try {redisTemplate.opsForHash().putAll(key, map);if (time > 0) {expire(key, time);}return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 向一张hash表中放入数据,如果不存在将创建** @param key   键* @param item  项* @param value 值* @return true 成功 false失败**/public boolean hset(String key, String item, Object value) {try {redisTemplate.opsForHash().put(key, item, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 向一张hash表中放入数据,如果不存在将创建** @param key   键* @param item  项* @param value 值* @param time  时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间* @return true 成功 false失败**/public boolean hset(String key, String item, Object value, long time) {try {redisTemplate.opsForHash().put(key, item, value);if (time > 0) {expire(key, time);}return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 删除hash表中的值** @param key  键 不能为null* @param item 项 可以使多个 不能为null**/public void hdel(String key, Object... item) {redisTemplate.opsForHash().delete(key, item);}/**** 判断hash表中是否有该项的值** @param key  键 不能为null* @param item 项 不能为null* @return true 存在 false不存在**/public boolean hHasKey(String key, String item) {return redisTemplate.opsForHash().hasKey(key, item);}/**** hash递增 如果不存在,就会创建一个 并把新增后的值返回** @param key  键* @param item 项* @param by   要增加几(大于0)* @return**/public double hincr(String key, String item, double by) {return redisTemplate.opsForHash().increment(key, item, by);}/**** hash递减** @param key  键* @param item 项* @param by   要减少记(小于0)* @return**/public double hdecr(String key, String item, double by) {return redisTemplate.opsForHash().increment(key, item, -by);}// ============================set=============================/**** 根据key获取Set中的所有值** @param key 键* @return**/public Set<Object> sGet(String key) {try {return redisTemplate.opsForSet().members(key);} catch (Exception e) {e.printStackTrace();return null;}}/**** 根据value从一个set中查询,是否存在** @param key   键* @param value 值* @return true 存在 false不存在**/public boolean sHasKey(String key, Object value) {try {return redisTemplate.opsForSet().isMember(key, value);} catch (Exception e) {e.printStackTrace();return false;}}/**** 将数据放入set缓存** @param key    键* @param values 值 可以是多个* @return 成功个数**/public long sSet(String key, Object... values) {try {return redisTemplate.opsForSet().add(key, values);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 将set数据放入缓存** @param key    键* @param time   时间(秒)* @param values 值 可以是多个* @return 成功个数**/public long sSetAndTime(String key, long time, Object... values) {try {Long count = redisTemplate.opsForSet().add(key, values);if (time > 0)expire(key, time);return count;} catch (Exception e) {e.printStackTrace();return 0;}}/**** 获取set缓存的长度** @param key 键* @return**/public long sGetSetSize(String key) {try {return redisTemplate.opsForSet().size(key);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 移除值为value的** @param key    键* @param values 值 可以是多个* @return 移除的个数**/public long setRemove(String key, Object... values) {try {Long count = redisTemplate.opsForSet().remove(key, values);return count;} catch (Exception e) {e.printStackTrace();return 0;}}// ===============================list=================================/**** 获取list缓存的内容** @param key   键* @param start 开始* @param end   结束 0 到 -1代表所有值* @return**/public List<Object> lGet(String key, long start, long end) {try {return redisTemplate.opsForList().range(key, start, end);} catch (Exception e) {e.printStackTrace();return null;}}/**** 获取list缓存的长度** @param key 键* @return**/public long lGetListSize(String key) {try {return redisTemplate.opsForList().size(key);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 通过索引 获取list中的值** @param key   键* @param index 索引 index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推* @return**/public Object lGetIndex(String key, long index) {try {return redisTemplate.opsForList().index(key, index);} catch (Exception e) {e.printStackTrace();return null;}}/**** 将list放入缓存** @param key   键* @param value 值* @param time  时间(秒)* @return**/public boolean lSet(String key, Object value) {try {redisTemplate.opsForList().rightPush(key, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 将list放入缓存** @param key   键* @param value 值* @param time  时间(秒)* @return**/public boolean lSet(String key, Object value, long time) {try {redisTemplate.opsForList().rightPush(key, value);if (time > 0)expire(key, time);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 将list放入缓存** @param key   键* @param value 值* @param time  时间(秒)* @return**/public boolean lSet(String key, List<Object> value) {try {redisTemplate.opsForList().rightPushAll(key, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 将list放入缓存** @param key   键* @param value 值* @param time  时间(秒)* @return**/public boolean lSet(String key, List<Object> value, long time) {try {redisTemplate.opsForList().rightPushAll(key, value);if (time > 0)expire(key, time);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 根据索引修改list中的某条数据** @param key   键* @param index 索引* @param value 值* @return**/public boolean lUpdateIndex(String key, long index, Object value) {try {redisTemplate.opsForList().set(key, index, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 移除N个值为value** @param key   键* @param count 移除多少个* @param value 值* @return 移除的个数**/public long lRemove(String key, long count, Object value) {try {Long remove = redisTemplate.opsForList().remove(key, count, value);return remove;} catch (Exception e) {e.printStackTrace();return 0;}}
}

4. application.yml

application.yml

server:port: 80
spring:profiles:active: cluster

application-cluster.yml

#集群
spring:redis:cluster:nodes:- 192.168.0.114:7001- 192.168.0.114:7002- 192.168.0.114:7003- 192.168.0.114:7004- 192.168.0.114:7005- 192.168.0.114:7006lettuce:pool:### 最大连接数（使用负值表示没有限制） 默认8max-active: 8### 最小空闲连接  默认8min-idle: 0### 连接池中的最大空闲连接 默认8max-idle: 8### 连接池最大阻塞等待时间（使用负值表示没有限制）max-wait: -1ms### 连接超时时间（毫秒）默认是2000mstimeout: 60000ms## Redis服务器连接密码（默认为空）password:

5. 单元测试

package com.gblfy;import com.gblfy.entity.User;
import com.gblfy.utils.RedisUtils;
import com.google.gson.Gson;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.MapUtils;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;@Slf4j
@SpringBootTest
@RunWith(SpringRunner.class)
public class RedisApplicationTests {@Autowiredprivate RedisUtils redisUtils;@Testpublic void contextLoads() {System.out.println("测试单元测试是否可用！");}//测试 存key string
//            value string/*** 存储String类型 key value*/@Testpublic void testStr() {redisUtils.set("String1", "str");log.info("String1: {}", redisUtils.get("String1"));}/*** 指定key的过期时间*/@Testpublic void testStrExpTimeout() {redisUtils.set("String2", "str2", 60 * 2);log.info("String2: {}", redisUtils.get("String2"));}/*** map*/@Testpublic void testMap() {Map<String, Object> map = new HashMap<String, Object>();map.put("int1", 1);map.put("int2", 2);map.put("int3", 3);redisUtils.set("map1", map, 60 * 2);log.info("map1: {}", redisUtils.get("map1"));}/*** 存储对象+list*/@Testpublic void testmap() {User u = new User();u.setId(1l);u.setName("雨昕");redisUtils.set("u", u, 60 * 2);log.info("u: {}", new Gson().toJson(redisUtils.get("u")));User u1 = (User) redisUtils.get("u");log.info("u1: {}", u1);User u2 = new User();u2.setId(1l);u2.setName("雨泽");List<User> userList = new ArrayList<User>();userList.add(u);userList.add(u2);redisUtils.set("userList", userList, 60 * 2);log.info("userList: {}", new Gson().toJson(redisUtils.get("userList")));}//-----------------------------------------------------------------------------------@Testpublic void testHget() throws Exception {redisUtils.hset("testHget", "testHget", "testHget");Assert.assertEquals("testHget", redisUtils.hget("testHget", "testHget"));redisUtils.hset("testHgetKey", "testHget", "testHgetValue");Assert.assertEquals("testHgetValue", redisUtils.hget("testHgetKey", "testHget"));}@Testpublic void testHmget() throws Exception {redisUtils.hset("testHmget", "testHmget1", "testHmget1");redisUtils.hset("testHmget", "testHmget2", "testHmget2");Map<Object, Object> map = redisUtils.hmget("testHmget");if (MapUtils.isNotEmpty(map)) {for (Map.Entry<Object, Object> e : map.entrySet()) {System.err.println(e.getKey() + "===" + e.getValue());}}}/*** 设置缓存过期时间*/@Testpublic void testExpire() throws Exception {redisUtils.set("aaaKey", "aaaValue");redisUtils.expire("aaaKey", 10);Assert.assertEquals(redisUtils.get("aaaKey"), "aaaValue");TimeUnit.SECONDS.sleep(10);Assert.assertNotEquals(redisUtils.get("aaaKey"), "aaaValue");}@Testpublic void testGetExpire() throws Exception {redisUtils.set("aaaKey", "aaaValue");redisUtils.expire("aaaKey", 10);// 设置了缓存就会及时的生效，所以缓存时间小于最初设置的时间Assert.assertTrue(redisUtils.getExpire("aaaKey") < 10L);}@Testpublic void testHasKey() throws Exception {redisUtils.set("aaaKey", "aaaValue");// 存在的Assert.assertTrue(redisUtils.hasKey("aaaKey"));// 不存在的Assert.assertFalse(redisUtils.hasKey("bbbKey"));}@Testpublic void testDel() throws Exception {redisUtils.set("aaaKey", "aaaValue");// 存在的Assert.assertTrue(redisUtils.hasKey("aaaKey"));redisUtils.del("aaaKey");Assert.assertFalse(redisUtils.hasKey("bbbKey"));}
}