1.报错信息、背景

2. 解决

2.1. 通过查询s3官网文档

https://docs.aws.amazon.com/zh_cn/sdk-for-java/latest/developer-guide/home.html –中文
https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/home.html –英文

2.2. 修改httpclient连接池，验证问题