W开发者_开发问答hy we have to setup a boundary string? What is the purpose for? any rules on it?
Boundary String, as the name says it is boundary for different parameters in a Httprequest, But I think in java no need to use boundary.
HttpClient, HttpCore by Apache like a lot are there for file handling Httpworks, which will be more easier and efficient
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是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
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