SpringBoot整合连接Redis集群
第一步,新建项目maven项目,添加依赖
(1)本文所采用的SpringBoot的版本如下
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
(2)加入Redis相关依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency>
第二步,application.yml加入redis相关配置
spring:
application:
name: redis-cluster
redis:
cluster:
nodes: 192.168.0.102:6379,192.168.0.103:6379,192.168.0.105:6379
max-redirects: 6
redis:
timeout: 10000 #客户端超时时间单位是毫秒 默认是2000
maxIdle: 300 #最大空闲数
maxTotal: 1000 #控制一个pool可分配多少个jedis实例,用来替换上面的redis.maxActive,如果是jedis 2.4以后用该属性
maxWaitMillis: 1000 #最大建立连接等待时间。如果超过此时间将接到异常。设为-1表示无限制。
minEvictableIdleTimeMillis: 300000 #连接的最小空闲时间 默认1800000毫秒(30分钟)
numTestsPerEvictionRun: 1024 #每次释放连接的最大数目,默认3
timeBetweenEvictionRunsMillis: 30000 #逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
testOnBorrow: true #是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
testWhileIdle: true #在空闲时检查有效性, 默认false
password: 123456 #密码
server:
port: 8080
第三步,编写配置类
package com.qxj.redis;
import java.util.HashSet;
import java.util.Set;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.RedisPassword;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import redis.clients.jedis.JedisPoolConfig;
@Configuration
public class RedisClusterConfig {
@Value("${spring.redis.cluster.nodes}")
private String clusterNodes;
@Value("${spring.redis.cluster.max-redirects}")
private int maxRedirects;
@Value("${redis.password}")
private String password;
@Value("${redis.timeout}")
private int timeout;
@Value("${redis.maxIdle}")
private int maxIdle;
@Value("${redis.maxTotal}")
private int maxTotal;
@Value("${redis.maxWaitMillis}")
private int maxWaitMillis;
@Value("${redis.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${redis.numTestsPerEvictionRun}")
private int numTestsPerEvictionRun;
@Value("${redis.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${redis.testOnBorrow}")
private boolean testOnBorrow;
@Value("${redis.testWhileIdle}")
private boolean testWhileIdle;
/**
* Redis连接池的配置
*
* @return JedisPoolConfig
*/
@Bean
public JedisPoolConfig getJedisPoolConfig() {
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
// 最大空闲数
jedisPoolConfig.setMaxIdle(maxIdle);
// 连接池的最大数据库连接数
jedisPoolConfig.setMaxTotal(maxTotal);
// 最大建立连接等待时间
jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
// 逐出连接的最小空闲时间 默认1800000毫秒(30分钟)
jedisPoolConfig.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
// 每次逐出检查时 逐出的最大数目 如果为负数就是 : 1/abs(n), 默认3
jedisPoolConfig.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
// 逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
jedisPoolConfig.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
// 是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
jedisPoolConfig.setTestOnBorrow(testOnBorrow);
// 在空闲时检查有效性, 默认false
jedisPoolConfig.setTestWhileIdle(testWhileIdle);
return jedisPoolConfig;
}
/**
* Redis集群的配置
*
* @return RedisClusterConfiguration
*/
@Bean
public RedisClusterConfiguration redisClusterConfiguration() {
RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
// Set<RedisNode> clusterNodes
String[] serverArray = clusterNodes.split(",");
Set<RedisNode> nodes = new HashSet<RedisNode>();
for (String ipPort : serverArray) {
String[] ipAndPort = ipPort.split(":");
nodes.add(new RedisNode(ipAndPort[0].trim(), Integer.valueOf(ipAndPort[1])));
}
redisClusterConfiguration.setClusterNodes(nodes);
redisClusterConfiguration.setMaxRedirects(maxRedirects);
redisClusterConfiguration.setPassword(RedisPassword.of(password));
return redisClusterConfiguration;
}
/**
* redis连接工厂类
*
* @return JedisConnectionFactory
*/
@Bean
public JedisConnectionFactory jedisConnectionFactory() {
// 集群模式
JedisConnectionFactory factory = new JedisConnectionFactory(redisClusterConfiguration(), getJedisPoolConfig());
return factory;
}
/**
* 实例化 RedisTemplate 对象
*
* @return RedisTemplate<String, Object>
*/
@Bean
public RedisTemplate<String, Object> redisTemplate() {
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
// Template初始化
initDomainRedisTemplate(redisTemplate);
return redisTemplate;
}
/**
* 设置数据存入 redis 的序列化方式 使用默认的序列化会导致key乱码
*/
private void initDomainRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
// 开启redis数据库事务的支持
redisTemplate.setEnableTransactionSupport(true);
redisTemplate.setConnectionFactory(jedisConnectionFactory());
// 如果不配置Serializer,那么存储的时候缺省使用String,如果用User类型存储,那么会提示错误User can't cast to
// String!
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
redisTemplate.setKeySerializer(stringRedisSerializer);
// hash的key也采用String的序列化方式
redisTemplate.setHashKeySerializer(stringRedisSerializer);
// jackson序列化对象设置
Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(
Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
// value序列化方式采用jackson
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
// hash的value序列化方式采用jackson
redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.afterPropertiesSet();
}
}
第四步,编写Controller测试类
package com.qxj.application;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class TestController {
@Autowired
private RedisTemplate<String, Object> template;
@RequestMapping("/test")
public String test() {
template.opsForValue().set("demo", "hello world! 你好,世界");
String str = (String) template.opsForValue().get("demo");
return str;
}
}
参考文献:https://blog.csdn.net/WYA1993/article/details/88046628
https://www.cnblogs.com/wps54213/p/12608777.html
在springboot使用搭建好的redis集群——lettuce方式
添加redis和连接池依赖
<!--redis连接池 start-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
</dependency>
<!--redis连接池 end-->
<!--redis start-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<version>2.2.6.RELEASE</version>
</dependency>
<!--redis end-->
在配置文件中配置连接池和sentinel
ip: 39.97.234.52
spring:
redis:
lettuce:
pool:
max-active: 10
max-idle: 8
max-wait: -1ms
min-idle: 0
sentinel:
master: mymaster
nodes: ${ip}:26379,${ip}:26380,${ip}:26381
password: test@dbuser2018
添加redis配置类,修改springboot默认的redis序列化方式
@Configuration
public class RedisConfig {
/**
* 把任何数据保存到redis时,都需要进行序列化,默认使用JdkSerializationRedisSerializer进行序列化。
* 默认的序列化会给所有的key,value的原始字符前,都加了一串字符(例如:\xAC\xED\x00\),不具备可读性
* 所以需要配置jackson序列化方式
*/
@Bean
public RedisTemplate<String,Object> redisTemplate(LettuceConnectionFactory factory){
RedisTemplate<String,Object> template=new RedisTemplate<>();
template.setConnectionFactory(factory);
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
template.setKeySerializer(stringRedisSerializer);
//value采用jackson序列化方式
template.setValueSerializer(jackson2JsonRedisSerializer);
//hash的key采用String的序列化方式
template.setHashKeySerializer(stringRedisSerializer);
//hash的value采用String的序列化方式
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
创建redis服务
@Service
public class RedisServiceImpl implements RedisService {
@Autowired
private RedisTemplate redisTemplate;
@Override
public boolean put(String key, Object value, long seconds) throws JsonProcessingException {
redisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
return true;
}
@Override
public <T> T get(String key, Class<T> clazz) throws IOException {
Object o = redisTemplate.opsForValue().get(key);
if (o != null) {
String json = String.valueOf(o);
T t = JsonUtil.stringToObject(json, clazz);
return t;
}
return null;
}
}
创建redisController测试redis服务
@RestController
public class RedisController {
@Autowired
private RedisService redisService;
@PostMapping(value = "put")
public String put(String key,String value,long seconds){
redisService.put(key,value,seconds);
return "ok";
}
@GetMapping(value = "get")
public Object get(String key){
Object o=redisService.get(key);
if(o!=null){
return String.valueOf(o);
}
return "not_ok";
}
}
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