SpringBoot 中 使用 Redisson 实现全局锁-实例

一、引入 Redisson 依赖

        <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.13.2</version>
        </dependency>

二、配置

可以兼容其他redis的配置（如 jedis）

redis: host: **.**.**.** (替换为服务器ip地址) 
port: 6379 (替换为redis服务的端口号) 
password: *** (替换为密码) database: ** (替换为实例号) 
timeout: 10000 
testOnBorrow: true 
testOnReturn: true 
lettuce: 
　　pool: 
　　　　max-active: 10 
　　　　max-wait: 10000 
　　　　min-idle: 4 
　　　　max-idle: 10

 三、测试用例：

    @Test
    public void redissonTest() throws Exception {
//        redisson(); // 需要手动停止，和 内容参数调整
    }

    public void redisson() throws Exception{
        Integer countStep = 0;
        while (true){
            Thread.sleep(1000);
            countStep++;
            log.info("time:{}", countStep);
            Thread buildVoucher = new Thread(new Runnable() {
                @SneakyThrows
                @Override
                public void run() {
                    Integer billTypeId = 7;
                    String bussDateInner = "2021-05-25";
                    String runningBillTypFlag = PublicConstants.RUNNING_VOUCHER_FLAG_BY_BILL_TYPE_STR + billTypeId +"-"+ bussDateInner;
                    RLock rLock = redissonClient.getLock(runningBillTypFlag);
                    try {
                        Integer waitTime = 7 * 1000;
                        boolean flag = rLock.tryLock(0, -1, TimeUnit.SECONDS);
                        if (flag) {
                            log.info("获取到锁，继续执行！");
                            double floor = Math.floor(Math.random() * 10 + 1);
                            if(floor == 3 || floor == 7) throw new RuntimeException("异常。。");
                            log.info("working…………");
                            Thread.sleep(5 * 1000);
                            log.info("working used 5s. finished !");
                        } else {
                            log.info("未能获取到锁，停止执行！");
                        }
                    }catch (Exception e){
                        logger.warn("内部异常：" + e.getMessage());
                    } finally {
                        try {
                            rLock.unlock();
                            log.info("It's unlocked.");
                        }catch (Exception e){
                            log.error("解锁抛异常。。。解锁失败，未能解锁！");
                        }
                    }
                }
            });
            buildVoucher.start();
        }
    }