@SpringBoot集成Redis集群
SpringBoot集成Redis集群
工程结构图
一、新建一个 SpringBoot 工程
二、引入 Redis 相关依赖
1、pom.xml 中添加以下内容
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2、完整的 pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zx</groupId>
<artifactId>testRedis</artifactId>
<version>1.0</version>aa
<packaging>jar</packaging>
<name>testRedis</name>
<description>testRedis project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- redis start -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- redis end -->
<dependency>
<groupId>com.zx</groupId>
<artifactId>testRedis</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
三、配置 Redis 参数
application.properties 中添加以下内容
## ################ windows ##############################
## Redis服务器地址
##spring.redis.host=10.100.50.23
## Redis服务器连接端口
##spring.redis.port=6379
## Redis服务器连接密码(默认为空)
#spring.redis.password=
## 连接池最大连接数(使用负值表示没有限制)
#spring.redis.pool.max-active=8
## 连接池最大阻塞等待时间(使用负值表示没有限制)
#spring.redis.pool.max-wait=-1
## 连接池中的最大空闲连接
#spring.redis.pool.max-idle=8
## 连接池中的最小空闲连接
#spring.redis.pool.min-idle=0
## 连接超时时间(毫秒)
#spring.redis.timeout=0
#spring.redis.commandTimeout=5000
## 读取数据超时时间
#spring.redis.soTimeout=5000
##超时重连最大次数
#spring.redis.maxAttempts=3
## redis.cluster
#spring.redis.cluster.nodes=127.0.0.1:6379,127.0.0.1:6380,127.0.0.1:6381,127.0.0.1:6382,127.0.0.1:6383,127.0.0.1:6384
# ################ linux ##############################
# Redis服务器地址
#spring.redis.host=10.100.50.23
# Redis服务器连接端口
#spring.redis.port=6379
# Redis服务器连接密码(默认为空)
spring.redis.password=zx123456
# 连接池最大连接数(使用负值表示没有限制)
spring.redis.pool.max-active=50
# 连接池最大阻塞等待时间(使用负值表示没有限制)
spring.redis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.pool.max-idle=8
# 连接池中的最小空闲连接
spring.redis.pool.min-idle=3
# 连接超时时间(毫秒)
spring.redis.timeout=0
spring.redis.commandTimeout=5000
# 读取数据超时时间
spring.redis.soTimeout=5000
#超时重连最大次数
spring.redis.maxAttempts=3
# redis.cluster
spring.redis.cluster.nodes=172.16.1.12:7000,172.16.1.12:7001,172.16.1.12:7002,172.16.1.12:7003,172.16.1.12:7004,172.16.1.12:7005
四、新建 Redis 配置解析类
新建类 RedisConfig.java
package com.zx.utils;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
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;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPoolConfig;
import java.net.UnknownHostException;
import java.util.HashSet;
import java.util.Set;
/**
* @Description Redis集群配置
* @Author zhengxiao
* @Date 2018/12/4
*/
@Configuration
@ConditionalOnClass({JedisCluster.class})
public class RedisConfig {
/**
* redis.cluster
*/
@Value("${spring.redis.cluster.nodes}")
private String clusterNodes;
/**
* 连接池中的最大空闲连接
*/
@Value("${spring.redis.pool.max-idle}")
private int maxIdle;
/**
* 连接池最大阻塞等待时间(使用负值表示没有限制)
*/
@Value("${spring.redis.pool.max-wait}")
private long maxWaitMillis;
/**
* 连接超时时间
*/
@Value("${spring.redis.timeout}")
private int timeout;
/**
* 命令超时时间
*/
@Value("${spring.redis.commandTimeout}")
private int commandTimeout;
/**
* 集群密码
*/
@Value("${spring.redis.password}")
private String password;
/**
* 读取数据超时时间
*/
@Value("${spring.redis.soTimeout}")
private int soTimeout;
/**
* 超时重连最大次数
*/
@Value("${spring.redis.maxAttempts}")
private int maxAttempts;
/**
* 最大连接数
*/
@Value("${spring.redis.pool.max-active}")
private int maxActive;
@Bean
public JedisCluster getJedisCluster() {
String[] cNodes = clusterNodes.split(",");
Set<HostAndPort> nodes = new HashSet<>();
//分割出集群节点
for(String node : cNodes) {
String[] hp = node.split(":");
nodes.add(new HostAndPort(hp[0], Integer.parseInt(hp[1])));
}
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
jedisPoolConfig.setMaxIdle(maxIdle);
jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
jedisPoolConfig.setMaxTotal(maxActive);
//创建集群对象
// return new JedisCluster(nodes, commandTimeout, soTimeout, maxAttempts, password, jedisPoolConfig);
// windows
// JedisCluster jedisCluster = new JedisCluster(nodes, commandTimeout, soTimeout, maxAttempts, null, jedisPoolConfig);
// linux
JedisCluster jedisCluster = new JedisCluster(nodes, commandTimeout, soTimeout, maxAttempts, password, jedisPoolConfig);
System.out.println(jedisCluster.get("a"));
return jedisCluster;
}
/**
* 设置数据存入redis 的序列化方式
* redisTemplate序列化默认使用的jdkSerializeable,存储二进制字节码,导致key会出现乱码,所以自定义
* 序列化类
*
* @paramredisConnectionFactory
*/
@Bean
public RedisTemplate<Object,Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
RedisTemplate<Object,Object> redisTemplate = new RedisTemplate<>();
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);
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
}
五、启动类添加注解@EnableCaching,加入缓存
package com.zx;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
/**
* @Description 启动
* @Author zhengxiao
* @Date 2018/12/4
*/
@SpringBootApplication
@EnableCaching
public class RedisApplication {
public static void main(String[] args) {
SpringApplication.run(RedisApplication.class, args);
}
}
六、新建测试服务类
package com.zx.service;/**
* Created by 1 on 2018/12/4.
*/
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import redis.clients.jedis.JedisCluster;
/**
* @Description
* @Author zhengxiao
* @Date 2018/12/4
*/
@Service
public class RedisService {
@Autowired
private JedisCluster jedisCluster;
/**
* 根据 key 查找
* @param key
* @return
*/
public String findByKey(String key) {
return jedisCluster.get(key);
}
/**
* 保存
* @param key
* @param value
* @return
*/
public String saveRedis(String key, String value) {
return jedisCluster.set(key, value);
}
}
七、新建控制层接口
package com.zx.controller;
import com.zx.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import redis.clients.jedis.Jedis;
/**
* @Description 接口
* @Author zhengxiao
* @Date 2018/12/4
*/
@RestController
@RequestMapping("redis")
public class RedisController {
@Autowired
RedisService redisService;
/**
* http://localhost:8080/redis/find?key=a
* 查询redis集群
*
* @param key 键
* @return 值
*/
@GetMapping("/find")
public String findRedis(@RequestParam String key) {
return redisService.findByKey(key);
}
/**
* http://localhost:8080/redis/save?key=a&value=1
* @param key
* @param value
* @return
*/
@GetMapping("/save")
public String saveRedis(@RequestParam String key, @RequestParam String value){
return redisService.saveRedis(key, value);
}
}
八、测试
1、启动 Redis 集群
2、启动 SpringBoot
3、浏览器访问
http://localhost:8080/redis/save?key=a&value=1
浏览器显示:ok
http://localhost:8080/redis/find?key=a
浏览器显示:1
九、问题
1、通过jedis连接虚拟机redis单机成功,使用redis客户端可以连接虚拟机redis集群,但使用JedisCluster连接redis集群一直报Could not get a resource from the pool
原因:错误的启动集群命令
/home/redis/redis-cluster/7000/bin/redis-cli --cluster create 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 -a zx123456 --cluster-replicas 1