我尝试使用REST API获取一些信息，它似乎在VBA（在Excel中）完全正常
但是当我在Java上尝试同样的事情时，我得到一个401错误：
java.io.IOException: Server returned HTTP response code: 401 for URL: https://y.y.y/jira/rest/api/latest/issue/PROJ-123
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1436)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234)
at com.jpmchase.jiraextraction.apiHandler.getHTML(apiHandler.java:61)
at com.jpmchase.jiraextraction.apiHandler.main(apiHandler.java:19)
同样当我在python 2.7中尝试这个时
File "C:\Python27\lib\urllib2.py", line 127, in urlopen
return _opener.open(url, data, timeout)
File "C:\Python27\lib\urllib2.py", line 410, in open
response = meth(req, response)
File "C:\Python27\lib\urllib2.py", line 523, in http_response
'http', request, response, code, msg, hdrs)
File "C:\Python27\lib\urllib2.py", line 448, in error
return self._call_chain(*args)
File "C:\Python27\lib\urllib2.py", line 382, in _call_chain
result = func(*args)
File "C:\Python27\lib\urllib2.py", line 531, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 401: Unauthorized
知道为什么吗？