我正在使用objective-c发出GET请求。服务器在django中实现。似乎制作GET REST请求会导致异常，但我不确定哪一方导致它。
在客户端，我定义了一个处理服务器请求的实用程序类：
- (HyServerRequest *)request:(NSString *)path
method:(NSString *)method
data:(NSData *)data
query:(NSDictionary *)query
{
NSString * queryString = nil;
if (query != nil) {
queryString = [query URLEncodedString];
path = [path stringByAppendingString:[NSString stringWithFormat:@"?%@", queryString]];
}
NSURL * url = [[NSURL alloc] initWithString:path relativeToURL:[self baseURL]];
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:[self requestTimeout]];
[request setHTTPMethod:method];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:[NSString stringWithFormat:@"%lu", (unsigned long)[data length]] forHTTPHeaderField:@"Content-Length"];
if (data != nil) {
[request setHTTPBody:data];
}
NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest:request
delegate:self
startImmediately:NO];
[self setConnection:connection];
return self;
}
然后我添加了一些实用工具方法，例如：
- (HyServerRequest *)get:(NSString *)path data:(NSData *)data query:(NSDictionary *)query
{
return [self request:path method:@"GET" data:data query:query];
}
以下是我最终提出请求的方式：
body = [NSJSONSerialization dataWithJSONObject:dict
options:0
error:&error];
self.syncRequest = [HyServerRequest get:[NSString stringWithFormat:@"/api/oauth/%@/", provider]
data:body
query:nil];
[self.syncRequest setDelegate:self];
[self.syncRequest start];
这对POST和PUT请求一直很好，但GET请求似乎不起作用。
在服务器端，这就是我解析请求主体的方式：
def parse_body(self, request):
# REST views default the content type to application/json, but neither should this be
# the only supported type, nor should it be hardcoded (I would like to aim at full
# content negotiation). I'm leaving this as is for now.
content_type = request.META.get('CONTENT_TYPE', 'application/json')
if content_type == 'application/json':
try:
content = json.loads(request.body)
except Exception as ex:
raise exceptions.HttpParseException()
elif content_type == 'text/plain':
content = request.body
else:
raise exceptions.HttpUnsupportedMediaType()
return content
但我没有得到任何内容。我知道我可以使用查询字符串传递GET请求的参数，但在某些情况下，它包含一个访问令牌，我宁愿不在URL中留下那些。
没有帮助的一件事是我在服务器上遇到的错误：
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 400 33
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 400 33
Traceback (most recent call last):
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 86, in run
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 400 33
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 86, in run
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 86, in run
self.finish_response()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 128, in finish_response
self.write(data)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 212, in write
self.send_headers()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 270, in send_headers
self.send_preamble()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 194, in send_preamble
'Date: %s\r\n' % format_date_time(time.time())
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 324, in write
self.finish_response()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 128, in finish_response
self.write(data)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 212, in write
self.send_headers()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 270, in send_headers
self.send_preamble()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 194, in send_preamble
'Date: %s\r\n' % format_date_time(time.time())
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 324, in write
self.finish_response()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 128, in finish_response
self.flush()
self.write(data)
self.flush()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 212, in write
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
self.send_headers()
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 270, in send_headers
error: [Errno 32] Broken pipe
self.send_preamble()
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 500 59
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/wsgiref/handlers.py", line 194, in send_preamble
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 54945)
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 500 59
'Date: %s\r\n' % format_date_time(time.time())
Traceback (most recent call last):
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 54949)
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 593, in process_request_thread
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 593, in process_request_thread
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 324, in write
self.flush()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
[02/Feb/2015 02:07:24] "GET /api/oauth/facebook/ HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 54947)
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 593, in process_request_thread
self.finish_request(request, client_address)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 334, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/Library/Python/2.7/site-packages/django/core/servers/basehttp.py", line 129, in __init__
super(WSGIRequestHandler, self).__init__(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 651, in __init__
self.finish()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 710, in finish
self.wfile.close()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 279, in close
self.flush()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------
self.finish_request(request, client_address)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 334, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/Library/Python/2.7/site-packages/django/core/servers/basehttp.py", line 129, in __init__
super(WSGIRequestHandler, self).__init__(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 651, in __init__
self.finish()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 710, in finish
self.wfile.close()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 279, in close
self.flush()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------
self.finish_request(request, client_address)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 334, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/Library/Python/2.7/site-packages/django/core/servers/basehttp.py", line 129, in __init__
super(WSGIRequestHandler, self).__init__(*args, **kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 651, in __init__
self.finish()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/SocketServer.py", line 710, in finish
self.wfile.close()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 279, in close
self.flush()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------
虽然URL似乎被多次调用（甚至使用不同的状态代码），但我只发出一次请求。在使用django中的流式响应之前，我遇到了这个破管问题，所以我不确定它与我现在正在做的事情有什么关系。