Redisson: 求个demo跟springmvc整合的例子，这边应用集群部署操作redis里面的数据

Created on 12 Jul 2018 · 3Comments · Source: redisson/redisson

### Expected behavior
自己加进去一直锁不住，看下哪里有问题么

@RequestMapping(value="/testLock")
@ResponseBody
public Object testLock(){
    String name = "rMap";
    RMap<String, Integer> intMap = redissonService.getRMap(name);
    RLock lock = redissonService.getRLock(name);
    try{
        // 1. 最常见的使用方法
        //lock.lock();
        // 2. 支持过期解锁功能,10秒钟以后自动解锁, 无需调用unlock方法手动解锁
        //lock.lock(10, TimeUnit.SECONDS);
        // 3. 尝试加锁，最多等待3秒，上锁以后10秒自动解锁
        boolean res = lock.tryLock(3, 10, TimeUnit.SECONDS);
        if(res){ //成功
            Integer num = intMap.get("num");
            if(num==null){
                num=0;
            }else{
                num++;
            }
            System.out.println(" 写入 "+intMap. putIfAbsent("num", num));
        }
    } catch (InterruptedException e) {
        e.printStackTrace();
    } finally {
        lock.unlock();
    }
    System.out.println(intMap.get("num"));
    return intMap;
}

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