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Java http cookie(Java http cookie)

如何从java中的URL获取cookie内容?

例如:当我访问google.com时使用LiveHttpHeaders我可以看到cookie返回如下。

饼干:SID = DQAAAKEAAADA1VJiGC-O-Ml8cPfRIA8NxJ3rCQfXbRnh5NMw-l8eunfAKJNypj9Rss1_Ok2yyQXCU9qu4jM2TuASy2EE0KUknUOsdOgMz3W7WCDgey6OSZ-xi_ozh_lZP8paJ_OViG_G2FaTWciTyd4Mp_V0LYjgov1u6KkhATu8day8-nEckMXb4I56cse8SaiYFCjDmpUDmL6CDFij8Nxd3XDUEOTn5SCifKrRDohW6mAAaqzFPA; HSID=AvoV_TPUEmoSB6KMm; PREF=ID=260f8c0212fee1a7:U=6ca9509bc747fb21:TM=1297164689:LM=1297164690:S=opeCe3s85Xhm3Bq1; NID=43=EZNhkfgLmXVNQriZ2rjU0HGj6flDYy2nfsPD4Ef6pME0wvXxc5_avP1R9fSea0py_-F9xY3SJ6DpMvLXRT_bU7FH97s8sOmx7l49cwvNUbYTwJcY0xqs-0vKqybTeNZY DQAAAKEAAADA1VJiGC-O-Ml8cPfRIA8NxJ3rCQfXbRnh5NMw-l8eunfAKJNypj9Rss1_Ok2yyQXCU9qu4jM2TuASy2EE0KUknUOsdOgMz3W7WCDgey6OSZ-xi_ozh_lZP8paJ_OViG_G2FaTWciTyd4Mp_V0LYjgov1u6KkhATu8day8-nEckMXb4I56cse8SaiYFCjDmpUDmL6CDFij8Nxd3XDUEOTn5SCifKrRDohW6mAAaqzFPA; HSID=AvoV_TPUEmoSB6KMm; PREF=ID=260f8c0212fee1a7:U=6ca9509bc747fb21:TM=1297164689:LM=1297164690:S=opeCe3s85Xhm3Bq1; NID=43=EZNhkfgLmXVNQriZ2rjU0HGj6flDYy2nfsPD4Ef6pME0wvXxc5_avP1R9fSea0py_-F9xY3SJ6DpMvLXRT_bU7FH97s8sOmx7l49cwvNUbYTwJcY0xqs-0vKqybTeNZY

我如何获得SID的价值? 这些东西在UrlConnection类的getHeaderFieldKey()中不可用。 我试图获取默认的cookieHandler,但系统返回null。


How can i get the cookie contents from a URL in java ?

Eg: Using LiveHttpHeaders when i visit google.com i can see cookie returned as follows.

Cookie: SID=DQAAAKEAAADA1VJiGC-O-Ml8cPfRIA8NxJ3rCQfXbRnh5NMw-l8eunfAKJNypj9Rss1_Ok2yyQXCU9qu4jM2TuASy2EE0KUknUOsdOgMz3W7WCDgey6OSZ-xi_ozh_lZP8paJ_OViG_G2FaTWciTyd4Mp_V0LYjgov1u6KkhATu8day8-nEckMXb4I56cse8SaiYFCjDmpUDmL6CDFij8Nxd3XDUEOTn5SCifKrRDohW6mAAaqzFPA; HSID=AvoV_TPUEmoSB6KMm; PREF=ID=260f8c0212fee1a7:U=6ca9509bc747fb21:TM=1297164689:LM=1297164690:S=opeCe3s85Xhm3Bq1; NID=43=EZNhkfgLmXVNQriZ2rjU0HGj6flDYy2nfsPD4Ef6pME0wvXxc5_avP1R9fSea0py_-F9xY3SJ6DpMvLXRT_bU7FH97s8sOmx7l49cwvNUbYTwJcY0xqs-0vKqybTeNZY

How do i get the value of SID ? These things are not available in getHeaderFieldKey() of UrlConnection class. I tried to get the default cookieHandler but the system returns null.


原文:https://stackoverflow.com/questions/4932761
更新时间:2021-12-24 10:12

最满意答案

您可以使用反射访问实例的字段:

StudentRecord obj;
Field field = obj.getClass().getField("firstName"); // or StudentRecord.class.getField()
CobolString cs = (CobolString)field.get(obj);
cs.setValue("John");

如果该字段是private ,请在调用Field.get()之前执行此操作:

field.setAccessible(true);

You can access the fields of an instance using reflection:

StudentRecord obj;
Field field = obj.getClass().getField("firstName"); // or StudentRecord.class.getField()
CobolString cs = (CobolString)field.get(obj);
cs.setValue("John");

If the field is private, execute this before calling Field.get():

field.setAccessible(true);

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