java操作:http://docs.aws.amazon.com/zh_cn/amazondynamodb/latest/gettingstartedguide/GettingStarted.Java.html
API文档:http://docs.aws.amazon.com/zh_cn/amazondynamodb/latest/APIReference/API_PutItem.html
简介和搭建本地数据库:
简介:http://docs.aws.amazon.com/zh_cn/amazondynamodb/latest/gettingstartedguide/intro-dynamodb-local.html