python之处理错误请求

我收到:'HTTP/1.1 400 Bad Request\r\n' 但我不明白为什么。看起来它进行了身份验证，然后进行了重定向，然后现在不起作用。为什么会这样？

我原以为这是标题，它缺少内容类型，但即使添加它也会产生相同的结果..

headers = { 
    'basic_auth': 'brofewfefwefewef:EKAXsWkdt5H6yJEmtexN', 
    'Content-Type': 'application/json' 
} 
client = Client(ClientConfig(), headers=headers, refresh=True) 
 
 
class FileDownloader(object): 
    ...Line 152... 
    def _get_http_pool(self, secure=True): 
        if secure: 
            _http = urllib3.PoolManager(cert_reqs=str('CERT_REQUIRED'), 
                                        ca_certs=certifi.where()) 
        else: 
            _http = urllib3.PoolManager() 
 
        if self.headers: 
            content_type = self.headers.get('Content-Type') 
            if 'Content-Type' in self.headers: 
                del self.headers['Content-Type'] 
            _headers = urllib3.util.make_headers(**self.headers) 
            _http.headers.update(_headers) 
            if content_type: 
                _http.headers['content-type'] = content_type 
        print(_http.headers) 
        return _http 

https://github.com/JMSwag/PyUpdater/blob/master/pyupdater/client/downloader.py 第 366 行是下载本身开始的地方。这至少可以说是令人困惑的。

错误:

DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): api.bitbucket.org 
send: b'GET /2.0/repositories/Anexampleuser/repo/downloads/keys.gz HTTP/1.1\r\nHost: api.bitbucket.org\r\nAccept-Encoding: identity\r\nauthorization: Basic YnJvZmV3ZmVmd2VmZXdlZjpFS0FYc1drZHQ1SDZ5SkVtdGV4Tg==\r\n\r\n' 
reply: 'HTTP/1.1 302 Found\r\n' 
DEBUG:urllib3.connectionpool:https://api.bitbucket.org:443 "GET/2.0/repositories/Anexampleuser/repo/downloads/keys.gz HTTP/1.1" 302 0 
DEBUG:urllib3.util.retry:Incremented Retry for (url='https://api.bitbucket.org/2.0/repositories/Anexampleuser/repo/downloads/keys.gz'): Retry(total=2, connect=None, read=None, redirect=None, status=None) 
INFO:urllib3.poolmanager:Redirecting https://api.bitbucket.org/2.0/repositories/Anexampleuser/repo/downloads/keys.gz -> https://bbuseruploads.s3.amazonaws.com/a0e395b6-0c54-4efb-9074-57ec4190020b/downloads/3fc0be6d-ca69-42d3-9711-fbb5cfd2bc38/keys.gz?Signature=ZQxeUTvYC3Q%2Fo1aaS1CSuzyit0Q%3D&Expires=1515976464&AWSAccessKeyId=AKIAIQWXW6WLXMB5QZAQ&versionId=n.ymY11KRkq36Xozy25aChvfUT.YzTf5&response-content-disposition=attachment%3B%20filename%3D%22keys.gz%22 
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): bbuseruploads.s3.amazonaws.com 
header: Server header: Vary header: Content-Type header: X-OAuth-Scopes header: Strict-Transport-Security header: Date header: Location header: X-Served-By header: ETag header: X-Static-Version header: X-Content-Type-Options header: X-Accepted-OAuth-Scopes header: X-Credential-Type header: X-Render-Time header: Connection header: X-Request-Count header: X-Frame-Options header: X-Version header: Content-Length send: b'GET /a0e395b6-0c54-4efb-9074-57ec4190020b/downloads/3fc0be6d-ca69-42d3-9711-fbb5cfd2bc38/keys.gz?Signature=ZQxeUTvYC3Q%2Fo1aaS1CSuzyit0Q%3D&Expires=1515976464&AWSAccessKeyId=AKIAIQWXW6WLXMB5QZAQ&versionId=n.ymY11KRkq36Xozy25aChvfUT.YzTf5&response-content-disposition=attachment%3B%20filename%3D%22keys.gz%22 HTTP/1.1\r\nHost: bbuseruploads.s3.amazonaws.com\r\nAccept-Encoding: identity\r\nauthorization: Basic YnJvZmV3ZmVmd2VmZXdlZjpFS0FYc1drZHQ1SDZ5SkVtdGV4Tg==\r\n\r\n' 
reply: 'HTTP/1.1 400 Bad Request\r\n' 

请您参考如下方法:

BitBucket API 为 /downloads/ 端点返回 302，所以 Authorization header 被执行到下一个请求，而 Amazon 不喜欢那个 header，所以它返回 400。解决方法是手动重新创建重定向请求。例如:(省略错误检查)

import urllib3 
 
http_pool = urllib3.PoolManager() 
req = http_pool.urlopen( 
    'GET', 'https://api.bitbucket.org/2.0/repositories/brofewfefwefewef/eee/downloads/keys.gz', 
    redirect=False, headers={'Authorization': 'Basic YnJvZmV3ZmVmd2VmZXdlZjpFS0FYc1drZHQ1SDZ5SkVtdGV4Tg=='}) 
redirected_req = http_pool.urlopen('GET', req.headers['Location'], preload_content=False) 
with open('keys.gz', 'wb') as f: 
    f.write(redirected_req.read()) 

顺便说一下，您的访问 token 仍然可用。