Redisson（二）SpringBoot集成Redisson

w_t_y_y2024-10-27 19:48

目录

一、Redis单例模式

二、Redis哨兵模式

三、Redis集群模式

四、主从模式

五、兼容多种模式的配置（重点）

1、pom

2、配置文件

（1）application.properties

（2）application-dev.properties

[（3） application-prod.properties](#（3） application-prod.properties)

3、Java配置类

4、应用

<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson</artifactId>
    <version>3.15.5</version>
</dependency>

<!--
    <dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson-spring-boot-starter</artifactId>
    <version>3.15.5</version>
</dependency>
-->

支持Redis多种连接模式，这里以RedissonClient工具为例

一、Redis单例模式

#单机模式
#Redis url should start with redis:// or rediss:// (for SSL connection)
my.redisson.address = redis://127.0.0.1:6379
my.redisson.password = wtyy

import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RedissionConfig {

    @Value("${my.redisson.address}")
    private String address;

    @Value("${my.redisson.password}")
    private String password;

    /**
     * 所有对Redisson的使用都是通过RedissonClient对象
     */
    @Bean(destroyMethod = "shutdown")
    public RedissonClient redissonClient(){
        // 创建配置 指定redis地址及节点信息
        Config config = new Config();
        config.useSingleServer().setAddress(address);
                //.setPassword(password);
        // 根据config创建出RedissonClient实例
        RedissonClient redissonClient = Redisson.create(config);
        return redissonClient;
    }
}

二、Redis哨兵模式

my.redisson.sentinel.schema=
my.redisson.sentinel.address = redis://xxx.xx.xxx1:19601,redis://xxx.xx.xxx2:19601,redis://xxx.xx.xxx3:19601
my.redisson.sentinel.password = N5WAXX4z9qw
my.redisson.sentinel.master = master-test
my.redisson.sentinel.database = 10

import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RedissionConfig {

    @Value("${my.redisson.sentinel.address}")
    private String address;

    @Value("${my.redisson.sentinel.password}")
    private String password;

    @Value("${my.redisson.sentinel.master}")
    private String master;

    @Value("${my.redisson.sentinel.database}")
    private Integer dataBase;

    @Value("${my.redisson.sentinel.schema}")
    private String schema;

    /**
     * 所有对Redisson的使用都是通过RedissonClient对象
     */
    @Bean(destroyMethod = "shutdown")
    public RedissonClient redissonClient(){
        Config config = new Config();
        config.useSentinelServers()
                .setScanInterval(2000) // cluster state scan interval in milliseconds
                .addSentinelAddress(address.split(","))
                .setCheckSentinelsList(false)
                .setMasterName(master)
                .setPassword(password)
                .setDatabase(dataBase);
        RedissonClient redissonClient = Redisson.create(config);
        return redissonClient;
    }
}

三、Redis集群模式

    Config config = new Config();
	config.useClusterServers()
    .setScanInterval(2000) // cluster state scan interval in milliseconds
    .addNodeAddress("redis://127.0.0.1:7000", "redis://127.0.0.1:7001")
    .addNodeAddress("redis://127.0.0.1:7002");
    RedissonClient redisson = Redisson.create(config);

四、主从模式

    Config config = new Config();
	config.useMasterSlaveServers()
	.setMasterAddress("redis://127.0.0.1:6379")
    .addSlaveAddress("redis://127.0.0.1:6389", "redis://127.0.0.1:6332", "redis://127.0.0.1:6419")
    .addSlaveAddress("redis://127.0.0.1:6399");
    RedissonClient redisson = Redisson.create(config);

五、兼容多种模式的配置（重点）

从上面可以看到，不同的redis模式有不同的连接配置方式，如果连接变更，配置代码也要跟着变更，不够灵活，再比如有多套环境，测试环境和生产环境使用的是不同的redis模式，所以需要考虑配置兼容问题。下面的配置适用于所有模式。

1、pom

因为使用到了 RedisProperties，所以需要引入 spring-boot-starter-data-redis

<?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>org.example</groupId>
    <artifactId>redis-demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.4</version>
        <relativePath/>
    </parent>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson</artifactId>
            <version>3.26.0</version>
        </dependency>

        <!--连接池依赖-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.11.1</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>


        <!--hutool工具-->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.8.15</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.83</version>
        </dependency>


        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.10.1</version>
        </dependency>
    </dependencies>

</project>
2、配置文件

按照 org.springframework.boot.autoconfigure.data.redis.RedisProperties 规则配置。源码：

package org.springframework.boot.autoconfigure.data.redis;

@ConfigurationProperties(
    prefix = "spring.data.redis"
)
public class RedisProperties {
    private int database = 0;
    private String url;
    private String host = "localhost";
    private String username;
    private String password;
    private int port = 6379;
    private Duration timeout;
    private Duration connectTimeout;
    private String clientName;
    private ClientType clientType;
    private Sentinel sentinel;
    private Cluster cluster;
    private final Ssl ssl = new Ssl();
    private final Jedis jedis = new Jedis();
    private final Lettuce lettuce = new Lettuce();

    ......
}

这里有两套环境：dev和prod

（1）application.properties
spring.profiles.active=dev
（2）application-dev.properties
spring.data.redis.host=127.0.0.1
spring.data.redis.port=6379
spring.data.redis.password=
spring.data.redis.lettuce.pool.max-active=8
spring.data.redis.lettuce.pool.max-wait=-1
spring.data.redis.lettuce.pool.max-idle=8
spring.data.redis.lettuce.pool.min-idle=0
spring.data.redis.lettuce.pool.enabled=true
spring.data.redis.lettuce.pool.time-between-eviction-runs=30s
（3） application-prod.properties
spring.data.redis.cluster.nodes=xxx.xxx.xx.xxx:6379
spring.data.redis.cluster.max-redirects=3
spring.data.redis.timeout=60S
spring.data.redis.lettuce.pool.max-wait=2S
spring.data.redis.lettuce.pool.max-active=1200
spring.data.redis.lettuce.pool.max-idle=400
spring.data.redis.lettuce.pool.min-idle=50
# spring.redis.lettuce.pool.time-between-eviction-runs=200
spring.data.redis.lettuce.pool.enabled=true
spring.data.redis.lettuce.pool.time-between-eviction-runs=30s
spring.data.redis.lettuce.cluster.refresh.adaptive=true
spring.data.redis.lettuce.cluster.refresh.period=60s
3、Java配置类

读取配置文件中 spring.data.redis 开头的配置，并加以判断。

package org.example.config;

import io.micrometer.common.util.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.ReflectionUtils;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@Slf4j
@Configuration
public class RedissonConfig {

    @Autowired
    RedisProperties redisProperties;

    private static final String REDIS_PROTOCOL_PREFIX = "redis://";

    private static final String REDISS_PROTOCOL_PREFIX = "rediss://";

    @Bean(destroyMethod = "shutdown")
    public RedissonClient redisson() {
        Config config;
        Method clusterMethod = ReflectionUtils.findMethod(RedisProperties.class, "getCluster");
        Method timeoutMethod = ReflectionUtils.findMethod(RedisProperties.class, "getTimeout");
        Object timeoutValue = ReflectionUtils.invokeMethod(timeoutMethod, redisProperties);
        int timeout;
        if (null == timeoutValue) {
            timeout = 10000;
        } else if (!(timeoutValue instanceof Integer)) {
            Method millisMethod = ReflectionUtils.findMethod(timeoutValue.getClass(), "toMillis");
            timeout = ((Long) ReflectionUtils.invokeMethod(millisMethod, timeoutValue)).intValue();
        } else {
            timeout = (Integer) timeoutValue;
        }

        if (redisProperties.getSentinel() != null) {
            Method nodesMethod =
                    ReflectionUtils.findMethod(RedisProperties.Sentinel.class, "getNodes");
            Object nodesValue =
                    ReflectionUtils.invokeMethod(nodesMethod, redisProperties.getSentinel());

            String[] nodes;
            if (nodesValue instanceof String) {
                nodes = convert(Arrays.asList(((String) nodesValue).split(",")));
            } else {
                nodes = convert((List<String>) nodesValue);
            }

            config = new Config();
            config.useSentinelServers()
                    .setMasterName(redisProperties.getSentinel().getMaster())
                    .addSentinelAddress(nodes)
                    .setDatabase(redisProperties.getDatabase())
                    .setConnectTimeout(timeout)
                    .setPassword(redisProperties.getPassword());
        } else if (clusterMethod != null
                && ReflectionUtils.invokeMethod(clusterMethod, redisProperties) != null) {
            Object clusterObject = ReflectionUtils.invokeMethod(clusterMethod, redisProperties);
            Method nodesMethod = ReflectionUtils.findMethod(clusterObject.getClass(), "getNodes");
            List<String> nodesObject =
                    (List) ReflectionUtils.invokeMethod(nodesMethod, clusterObject);

            String[] nodes = convert(nodesObject);

            config = new Config();
            config.useClusterServers()
                    .addNodeAddress(nodes)
                    .setConnectTimeout(timeout)
                    .setPassword(redisProperties.getPassword());
        } else {
            config = new Config();
            String prefix = REDIS_PROTOCOL_PREFIX;
            Method method = ReflectionUtils.findMethod(RedisProperties.class, "isSsl");
            if (method != null && (Boolean) ReflectionUtils.invokeMethod(method, redisProperties)) {
                prefix = REDISS_PROTOCOL_PREFIX;
            }

            String password =
                    StringUtils.isBlank(redisProperties.getPassword())
                            ? null
                            : redisProperties.getPassword();
            config.useSingleServer()
                    .setAddress(
                            prefix + redisProperties.getHost() + ":" + redisProperties.getPort())
                    .setConnectTimeout(timeout)
                    .setDatabase(redisProperties.getDatabase())
                    .setPassword(password);
        }

        return Redisson.create(config);
    }

    private String[] convert(List<String> nodesObject) {
        List<String> nodes = new ArrayList<String>(nodesObject.size());
        for (String node : nodesObject) {
            if (!node.startsWith(REDIS_PROTOCOL_PREFIX)
                    && !node.startsWith(REDISS_PROTOCOL_PREFIX)) {
                nodes.add(REDIS_PROTOCOL_PREFIX + node);
            } else {
                nodes.add(node);
            }
        }
        return nodes.toArray(new String[nodes.size()]);
    }
}

这里用了反射，其实RedisProperties对象已经拿到了，直接从 redisProperties中get也是可以的：

RedisProperties.Cluster cluster = redisProperties.getCluster();
4、应用
import com.alibaba.fastjson.JSON;
import org.example.dto.UserDTO;
import org.example.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.redisson.api.RBucket;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.test.context.junit4.SpringRunner;

@SpringBootTest(classes = {Main.class}, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@RunWith(SpringRunner.class)
public class RedissonTest {

    @Autowired
    private RedissonClient redissonClient;

    @Test
    public void  testString(){
        RBucket<Object> bucket = redissonClient.getBucket("test");
        bucket.set("这是value");
        System.out.println(bucket.get());
    }
}
5、与RedisTemplate并存使用

这个demo引入了 spring-boot-starter-data-redis，所以可以直接使用RedisTemplate：

@SpringBootTest(classes = {Main.class}, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@RunWith(SpringRunner.class)
public class MyTest {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Autowired
    private UserService userService;

    @Test
    public void  testString(){
        String key = "string-name";
        //存
        String value = "这是value123";
        stringRedisTemplate.opsForValue().set(key,value);
        //取
        Object valueObj = stringRedisTemplate.opsForValue().get(key);
        System.out.println("value为：" + valueObj);
    }
}
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