Thread-safe在Java Concurrency in Practice这本书里面的定义是: A class is thread-safe if it behaves correctly when accessed from multiple threads, regardless of the scheduling or interleaving of the execution of those threads by the runtime environment, and with no additional synchronization or other coordination on the part of the calling code. Spring本人不是很熟悉,网上Google了下相关方面的话题,得到的有用的结果很少。可以参考的是:Thread safety, singletons and Spring。还有一篇是:Thread-safe webapps using [...]