文章目錄

• • • 1. maven依賴
    • 2. RedisConfig
    • 3. RedisUtils
    • 4. application.yml
    • 5. 單元測試
    • 6. redis 客戶端查看

1. maven依賴

<!--redis Start--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!-- redis lettuce 依賴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配置類**/ @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);//開啟事務(wù)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工具類** @author 共通組* @date 2019年2月25日*/ @Component public final class RedisUtils {@Autowiredprivate RedisTemplate<String, Object> redisTemplate;// =============================common============================/**** 指定緩存失效時間** @param key 鍵* @param time 時間(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;}}/**** 根據(jù)key 獲取過期時間** @param key 鍵 不能為null* @return 時間(秒) 返回0代表為永久有效*/public long getExpire(String key) {return redisTemplate.getExpire(key, TimeUnit.SECONDS);}/**** 判斷key是否存在** @param key 鍵* @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;}}/**** 刪除緩存** @param key 可以傳一個值 或多個*/@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=============================/**** 普通緩存獲取** @param key 鍵* @return 值**/public Object get(String key) {return key == null ? null : redisTemplate.opsForValue().get(key);}/**** 普通緩存放入** @param key 鍵* @param value 值* @return true成功 false失敗**/public boolean set(String key, Object value) {try {redisTemplate.opsForValue().set(key, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 普通緩存放入并設(shè)置時間** @param key 鍵* @param value 值* @param time 時間(秒) time要大于0 如果time小于等于0 將設(shè)置無限期* @return true成功 false 失敗**/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;}}/**** 遞增** @param key 鍵* @param delta 要增加幾(大于0)* @return**/public long incr(String key, long delta) {if (delta < 0) {throw new RuntimeException("遞增因子必須大于0");}return redisTemplate.opsForValue().increment(key, delta);}/**** 遞減** @param key 鍵* @param delta 要減少幾(小于0)* @return**/public long decr(String key, long delta) {if (delta < 0) {throw new RuntimeException("遞減因子必須大于0");}return redisTemplate.opsForValue().increment(key, -delta);}// ================================Map=================================/**** HashGet** @param key 鍵 不能為null* @param item 項 不能為null* @return 值**/public Object hget(String key, String item) {return redisTemplate.opsForHash().get(key, item);}/**** 獲取hashKey對應(yīng)的所有鍵值** @param key 鍵* @return 對應(yīng)的多個鍵值**/public Map<Object, Object> hmget(String key) {return redisTemplate.opsForHash().entries(key);}/**** HashSet** @param key 鍵* @param map 對應(yīng)多個鍵值* @return true 成功 false 失敗**/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 并設(shè)置時間** @param key 鍵* @param map 對應(yīng)多個鍵值* @param time 時間(秒)* @return true成功 false失敗**/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;}}/**** 向一張hash表中放入數(shù)據(jù),如果不存在將創(chuàng)建** @param key 鍵* @param item 項* @param value 值* @return true 成功 false失敗**/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;}}/**** 向一張hash表中放入數(shù)據(jù),如果不存在將創(chuàng)建** @param key 鍵* @param item 項* @param value 值* @param time 時間(秒) 注意:如果已存在的hash表有時間,這里將會替換原有的時間* @return true 成功 false失敗**/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;}}/**** 刪除hash表中的值** @param key 鍵 不能為null* @param item 項 可以使多個 不能為null**/public void hdel(String key, Object... item) {redisTemplate.opsForHash().delete(key, item);}/**** 判斷hash表中是否有該項的值** @param key 鍵 不能為null* @param item 項 不能為null* @return true 存在 false不存在**/public boolean hHasKey(String key, String item) {return redisTemplate.opsForHash().hasKey(key, item);}/**** hash遞增 如果不存在,就會創(chuàng)建一個 并把新增后的值返回** @param key 鍵* @param item 項* @param by 要增加幾(大于0)* @return**/public double hincr(String key, String item, double by) {return redisTemplate.opsForHash().increment(key, item, by);}/**** hash遞減** @param key 鍵* @param item 項* @param by 要減少記(小于0)* @return**/public double hdecr(String key, String item, double by) {return redisTemplate.opsForHash().increment(key, item, -by);}// ============================set=============================/**** 根據(jù)key獲取Set中的所有值** @param key 鍵* @return**/public Set<Object> sGet(String key) {try {return redisTemplate.opsForSet().members(key);} catch (Exception e) {e.printStackTrace();return null;}}/**** 根據(jù)value從一個set中查詢,是否存在** @param key 鍵* @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;}}/**** 將數(shù)據(jù)放入set緩存** @param key 鍵* @param values 值 可以是多個* @return 成功個數(shù)**/public long sSet(String key, Object... values) {try {return redisTemplate.opsForSet().add(key, values);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 將set數(shù)據(jù)放入緩存** @param key 鍵* @param time 時間(秒)* @param values 值 可以是多個* @return 成功個數(shù)**/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;}}/**** 獲取set緩存的長度** @param key 鍵* @return**/public long sGetSetSize(String key) {try {return redisTemplate.opsForSet().size(key);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 移除值為value的** @param key 鍵* @param values 值 可以是多個* @return 移除的個數(shù)**/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=================================/**** 獲取list緩存的內(nèi)容** @param key 鍵* @param start 開始* @param end 結(jié)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;}}/**** 獲取list緩存的長度** @param key 鍵* @return**/public long lGetListSize(String key) {try {return redisTemplate.opsForList().size(key);} catch (Exception e) {e.printStackTrace();return 0;}}/**** 通過索引 獲取list中的值** @param key 鍵* @param index 索引 index>=0時， 0 表頭，1 第二個元素，依次類推；index<0時，-1，表尾，-2倒數(shù)第二個元素，依次類推* @return**/public Object lGetIndex(String key, long index) {try {return redisTemplate.opsForList().index(key, index);} catch (Exception e) {e.printStackTrace();return null;}}/**** 將list放入緩存** @param key 鍵* @param value 值* @param time 時間(秒)* @return**/public boolean lSet(String key, Object value) {try {redisTemplate.opsForList().rightPush(key, value);return true;} catch (Exception e) {e.printStackTrace();return false;}}/**** 將list放入緩存** @param key 鍵* @param value 值* @param time 時間(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;}}/**** 將list放入緩存** @param key 鍵* @param value 值* @param time 時間(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;}}/**** 將list放入緩存** @param key 鍵* @param value 值* @param time 時間(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;}}/**** 根據(jù)索引修改list中的某條數(shù)據(jù)** @param key 鍵* @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個值為value** @param key 鍵* @param count 移除多少個* @param value 值* @return 移除的個數(shù)**/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:### 最大連接數(shù)（使用負值表示沒有限制） 默認8max-active: 8### 最小空閑連接 默認8min-idle: 0### 連接池中的最大空閑連接 默認8max-idle: 8### 連接池最大阻塞等待時間（使用負值表示沒有限制）max-wait: -1ms### 連接超時時間（毫秒）默認是2000mstimeout: 60000ms## Redis服務(wù)器連接密碼（默認為空）password:

5. 單元測試

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("測試單元測試是否可用！");}//測試 存key string // value string/*** 存儲String類型 key value*/@Testpublic void testStr() {redisUtils.set("String1", "str");log.info("String1: {}", redisUtils.get("String1"));}/*** 指定key的過期時間*/@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"));}/*** 存儲對象+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("雨澤");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());}}}/*** 設(shè)置緩存過期時間*/@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);// 設(shè)置了緩存就會及時的生效，所以緩存時間小于最初設(shè)置的時間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"));} }

6. redis 客戶端查看

這2中客戶端都可以查看，任選一種即可

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