Springboot集成Jedis + Redisson（已自测）

原文：https://blog.csdn.net/c_zyer/article/details/79415728

本文主要跟大家分享在Springboot中集成Jedis和Redisson的方法。为什么要集成两个redis客户端？那是因为它们各有所长也各有所缺，合在一起才能完善彼此。Jedis作为Redis客户端的java版实现实现了绝大部分的Redis原生功能，但是却没有对分布式线程控制做很好的支持。而Redisson是Redis官方推荐的支持分布式操作的Redis Java版客户端，但它却不支持一些基础的Redis原生功能，所以Jedis和Redisson只有整合到一起使用，才能更好的满足用户的需求。

接下来，分几个步骤分享给大家如何在Springboot中集成Jedis和Redisson。

首先，通过start.spring.io生成一个支持redis的web项目

将生成的项目导入IDE，e.g., Intellij IDEA.

在pom文件中加入redisson依赖 （添加完后，可以做下Maven -> Reimport）

为每个环境创建一套配置文件

本地开发环境以-local结尾，测试环境以-test结尾，生产环境以-prod结尾。然后在application.yml配置文件中指定激活那个环境的配置文件

spring:
  application:
    name: demo
  profiles:
    active: '@profileActive@'

此处别忘了

在相应环境的application配置文件中添加相应的Redis配置（Redis服务做成了哨兵模式），比如，在application-local.yml加入

spring:
  redis:
    database: 0
    password: 12345678 #密码
    port: 6379
    timeout: 0
    pool:
      max-active: 8 #最大连接数
      max-idle: 8 #最大空闲连接数
      max-wait: -1 #最大等待时间
      min-idle: 0
    sentinel:
      master: master1
      nodes: 172.16.33.216:16001,172.16.33.216:16002
server:
  port: 9090

在相应环境的Redisson配置文件中加入Redisson的配置信息（配置来源Redisson官方，点击查看）

---
sentinelServersConfig:
  idleConnectionTimeout: 10000
  pingTimeout: 1000
  connectTimeout: 10000
  timeout: 3000
  retryAttempts: 3
  retryInterval: 1500
  reconnectionTimeout: 3000
  failedAttempts: 3
  password: 12345678
  subscriptionsPerConnection: 5
  clientName: null
  loadBalancer: !<org.redisson.connection.balancer.RoundRobinLoadBalancer> {}
  slaveSubscriptionConnectionMinimumIdleSize: 1
  slaveSubscriptionConnectionPoolSize: 50
  slaveConnectionMinimumIdleSize: 10
  slaveConnectionPoolSize: 64
  masterConnectionMinimumIdleSize: 10
  masterConnectionPoolSize: 64
  readMode: "SLAVE"
  sentinelAddresses:
  - "redis://172.16.33.216:16001"
  - "redis://172.16.33.216:16002"
  masterName: "master1"
  database: 0
threads: 0
nettyThreads: 0
codec: !<org.redisson.codec.JsonJacksonCodec> {}
useLinuxNativeEpoll: false

配置文件配好后，还需要注册一个Springboot的启动类（DemoApplication.java）中注册一个RedissonClient Bean，方法如下：

@Autowired
private Environment env;

@Bean(destroyMethod = "shutdown")
public RedissonClient redissonClient() throws IOException {
	String[] profiles = env.getActiveProfiles();
	String profile = "";
	if(profiles.length > 0) {
		profile = "-" + profiles[0];
	}
	return Redisson.create(
			Config.fromYAML(new ClassPathResource("redisson" + profile + ".yml").getInputStream())
	);
}

Everything is ready. Now let's rock.

创建一个Controller类

@RestController
@RequestMapping("/demo")
public class DemoController {

    private static Logger logger = LoggerFactory.getLogger(DemoController.class);

    @Autowired
    private RedisTemplate<String, String> redisTemplate;
    @Autowired
    private RedissonClient redissonClient;

    @ResponseBody
    @RequestMapping("/lock")
    public String lock(@RequestParam("sid") String serverId) {
        Long counter = redisTemplate.opsForValue().increment("COUNTER", 1);
        RLock lock = redissonClient.getLock("TEST");
        try {
            lock.lock();
            logger.info("Request Thread - " + counter + "[" + serverId +"] locked and begun...");
            Thread.sleep(5000); // 5 sec
            logger.info("Request Thread - " + counter + "[" + serverId +"] ended successfully...");
        } catch (Exception ex) {
            logger.error("Error occurred");
        } finally {
            lock.unlock();
            logger.info("Request Thread - " + counter + "[" + serverId +"] unlocked...");
        }

        return "lock-" + counter + "[" + serverId +"]";
    }
}

Code 完成，启动程序，在浏览器中试一把先

=================================================================

以下自己实现的

import java.io.IOException;

import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Component;

@Component
public class RedissonClientConfig {

    @Autowired
    private Environment env;

    @Bean(destroyMethod = "shutdown")
    public RedissonClient redissonClient() throws IOException {
        String[] profiles = env.getActiveProfiles();
        String profile = "";
        if(profiles.length > 0) {
            profile = "-" + profiles[0];
        }
        return Redisson.create(Config.fromYAML(new ClassPathResource("redisson" + profile + ".yml").getInputStream()));
    }
    
}

配置文件  redisson-prod.yml

singleServerConfig:
  idleConnectionTimeout: 10000
  pingTimeout: 1000
  connectTimeout: 10000
  timeout: 3000
  retryAttempts: 3
  retryInterval: 1500
  reconnectionTimeout: 3000
  failedAttempts: 3
  password: null
  subscriptionsPerConnection: 5
  clientName: null
  address: "redis://192.168.20.123:6379"
  password: 123456
  subscriptionConnectionMinimumIdleSize: 1
  subscriptionConnectionPoolSize: 50
  connectionMinimumIdleSize: 32
  connectionPoolSize: 64
  database: 15
  dnsMonitoring: false
  dnsMonitoringInterval: 5000
threads: 0
nettyThreads: 0
codec: !<org.redisson.codec.JsonJacksonCodec> {}
"transportMode": "NIO"

controller

import java.util.concurrent.TimeUnit;

import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;


@RestController
@RequestMapping("/demo")
public class DemoController {

    private static Logger logger = LoggerFactory.getLogger(DemoController.class);

    @Autowired
    private RedisTemplate<String, String> redisTemplate;
    @Autowired
    private RedissonClient redissonClient;

    public static int COUNT = 3;
    
    @ResponseBody
    @RequestMapping("/lock")
    public String lock(@RequestParam("sid") String serverId) {
        Long counter = redisTemplate.opsForValue().increment("COUNTER", 1);
        redisTemplate.expire("COUNTER", 43200, TimeUnit.SECONDS);
        
        if (counter>3) {
            return "大于3了";
        }
        RLock lock = redissonClient.getFairLock("TEST");
        try {
            lock.lock(5, TimeUnit.SECONDS);
            
            logger.info("Request Thread - " + counter + "[" + serverId +"] locked and begun...");
            if (COUNT > 0) {
                COUNT = COUNT - 1;
                Thread.sleep(1000);
            } else {
                return "为0了";
            }
            logger.info("Request Thread - " + counter + "[" + serverId +"] ended successfully...");
        } catch (Exception ex) {
            logger.error("Error occurred");
        } finally {
            if (lock != null && lock.isLocked()) {
                lock.unlock();
            }
            logger.info("Request Thread - " + counter + "[" + serverId +"] unlocked...");
        }

        return "卖出lock-" + counter + "[" + serverId +"]" + COUNT;
    }
    
}

写个多线程测试

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;

import com.hyb.util.HttpClientUtil;

//多线程的写法1
public class Thread12 {
    
    
    private static Map<String,String> parms = new HashMap<String,String>();
    
    public static void main(String[] args) {
        testCountDownLatch();
    }
    
    public static void testCountDownLatch(){
        
        int threadCount = 2000;
        
        final CountDownLatch latch = new CountDownLatch(threadCount);
        for(int i=0; i< threadCount; i++){
             
            new Thread(new Runnable() {
                
                @Override
                public void run() {

                    System.out.println("线程" + Thread.currentThread().getId() + "开始出发");

                    try {
                        parms.put("sid", "线程id=" +Thread.currentThread().getId());
                        String result = HttpClientUtil.doGet("http://192.168.20.234:8061/demo/lock", parms, 20000);
                        System.out.println("线程result" + result);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                    System.out.println("线程" + Thread.currentThread().getId() + "已到达终点");

                    latch.countDown();
                }
            }).start();
        }
        
        try {
            latch.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        System.out.println(threadCount+"个线程已经执行完毕");
    }

}    

import java.util.HashMap;
import java.util.Map;

import com.hyb.util.HttpClientUtil;

//多线程的写法1
public class Thread12 {
    
    
    
    

public static void main(String args[]) {
    
MyThread myThread =new MyThread();
//myThread.run();
//把这个MyThread包装称为Thread
Thread t1 =new Thread(myThread);
Thread t2=new Thread(myThread);
Thread t3=new Thread(myThread);
Thread t4=new Thread(myThread);
Thread t5=new Thread(myThread);
Thread t6=new Thread(myThread);
Thread t7=new Thread(myThread);
Thread t8=new Thread(myThread);
Thread t9=new Thread(myThread);
Thread t10=new Thread(myThread);
Thread t11=new Thread(myThread);
Thread t12=new Thread(myThread);
t1.start();
t2.start();
t3.start();
t4.start();
t5.start();
t6.start();
t7.start();
t8.start();
t9.start();
t10.start();
t11.start();
t12.start();
}

}


class MyThread implements Runnable {
    
    private static Map<String,String> parms = new HashMap<String,String>();
    
    @Override
    public void run() {
        parms.put("sid", Thread.currentThread().getName());
        String result = HttpClientUtil.doGet("http://192.168.20.234:8061/demo/lock", parms, 20000);
        System.out.println("返回："+result);
    }

}