在下面的代码中：
#!/usr/local/bin/python
import json
APPLICATION_NAME = 'cc9226315643df89-36bf02429075329d0ba36748360d050c'
HEADERS1 = json.dumps(dict(Destination = u"/api/af/latest/applications/%s/rulesets" % (APPLICATION_NAME)))
print "Headers1 is %s" % (HEADERS1)
HEADERS2 = {'Destination': '/api/af/latest/applications/%s/rulesets' % (APPLICATION_NAME)}
print "Headers2 is %s" % (HEADERS2)
我得到以下输出：
Headers1 is {"Destination": "/api/af/latest/applications/cc9226315643df89-36bf02429075329d0ba36748360d050c/rulesets"}
Headers2 is {'Destination': '/api/af/latest/applications/cc9226315643df89-36bf02429075329d0ba36748360d050c/rulesets'}
但是，当我尝试在使用request（）的REST调用中使用HEADER1或HEADER2时，得到的结果却截然不同：
SERVER_URL = 'http://1.1.33.109:8087%s' % (APP_PATH)
REQ_DATA = None
print "Headers are: ", HEADERS
print "SERVER_URL is: ", SERVER_URL
print "Request Data is:", REQ_DATA
print ""
RESPONSE = requests.request(
'MOVE',
SERVER_URL,
auth = ('admin', 'admin'),
verify = False,
data = REQ_DATA,
headers = HEADERS1 ) #<-- If I use HEADER1 it breaks, if I use HEADER2 it works
print "Move Ruleset back to the Application RESULT: %s\n" % (RESPONSE)
使用HEADER1，我得到以下信息：
Traceback (most recent call last):
File "./myrest.py", line 234, in <module>
headers = HEADERS1 )
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/api.py", line 44, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/sessions.py", line 324, in request
prep = req.prepare()
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/models.py", line 223, in prepare
p.prepare_headers(self.headers)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/requests/models.py", line 340, in prepare_headers
headers = dict((name.encode('ascii'), value) for name, value in headers.items())
AttributeError: 'str' object has no attribute 'items'
如果我使用HEADER2，它将执行干净：
将规则集移回应用程序结果：响应[200]
谁能解释这些区别是什么？
您正在传递一个字符串; headers不能永远是一个JSON编码字符串，它始终是一个Python字典。
该print结果都是骗人的; JSON编码的对象看起来很像Python字典表示形式，但它们远非同一件事。
该requestsAPI明确规定，headers必须是一个字典：
headers–（可选）与一起发送的HTTP标头字典Request。
JSON数据是您要作为内容发送到另一台服务器的内容，而不是用于与Python API通信的内容。
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