例子:
"http://java.sun.com"
"http://www.sun.com:80"
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HTTPS Connection
支持: 必须
接口: javax.microedition.io.HttpsConnection，扩展了HttpConnection
例子:
"https://java.sun.com"
"https://www.sun.com:443"
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安全连接
支持: 推荐
