有谁能告诉我如何与https服务器进行同步调用?我可以使用以下委托方法在https服务器上执行异步请求。
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace
和
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
但我需要做同步。
答案 0 :(得分:24)
//对请求进行编码
NSData *postData = [xmlText dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
**//Calculating length of request**
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:requestUrlString]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/xml" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSURLResponse* response;
NSError* error = nil;
//Capturing server response
NSData* result = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
答案 1 :(得分:13)
+ (NSData *)sendSynchronousRequest:(NSURLRequest *)request returningResponse:(NSURLResponse **)response error:(NSError **)error
NSUrlConnection
中的应该可以正常使用https。
如果您想提供凭据,则需要将其作为网址的一部分:(https://username:password@domain.tld/api/user.json
)。
无法提供NSURLConnection
委托,因此如果您需要一些非标准的身份验证处理,则需要异步执行。
答案 2 :(得分:6)
我是这样做的: 而不是
[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]
我在包含类上创建了相同的方法实例,因为我们需要一个委托。并且不要使它成为单例,因此每个连接都有自己的独立变量,因为如果我们不这样做,并且在另一个连接完成之前恰好调用了两个连接,那么接收到的数据和循环的处理将无法相继交织在一起
[[ClassNameHere new] sendSynchronousRequest:request returningResponse:&response error:&error]
这样我就可以创建一个NSUrl连接并处理它(以同步方式,我们将看到如何),所以我不必更改任何以前编写的代码。
- (NSData *)sendSynchronousRequest:(NSURLRequest *)request returningResponse:(NSURLResponse *__strong*)response error:(NSError *__strong*)error
{
_finishedLoading=NO;
_receivedData=[NSMutableData new];
_error=error;
_response=response;
NSURLConnection*con=[NSURLConnection connectionWithRequest:request delegate:self];
[con start];
CFRunLoopRun();
return _receivedData;
}
- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
//handle the challenge
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
*_response=response;
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[_receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
*_error=error;
CFRunLoopStop(CFRunLoopGetCurrent());
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
CFRunLoopStop(CFRunLoopGetCurrent());
}
诀窍在于CFRunLoopRun()和CFRunLoopStop(CFRunLoopGetCurrent()) 我希望它能帮助未来的其他人。