• Each HttpURLConnection instance is used to make a single request but the underlying network connection to the HTTP server may be transparently shared by other instances.
  
• 每個HttpURLConnection實例是用于制造單個請求但底層網絡連接到HTTP服務器可以透明地共享的其他實例。
  
• Calling the close() methods on the InputStream or OutputStream of an HttpURLConnection after a request may free network resources associated with this instance but has no effect on any shared persistent connection.
  
• 調用close()方法后的InputStream或OutputStream HttpURLConnection請求可能免費網絡資源相關的實例,但不影響任何共享的持久連接。
  
• Calling the disconnect() method may close the underlying socket if a persistent connection is otherwise idle at that time.
  
• 調用斷開()方法可能關閉底層的套接字如果持久連接空閑。
• The HTTP protocol handler has a few settings that can be accessed through System Properties. This covers Proxy settings as well as various other settings.?
• HTTP協議處理程序有一些設置,可以通過系統屬性訪問。這包括代理設置以及其他各種設置。
  
• 
  

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