由于公司用的是MKNetworkKit第三方的网络请求框架，最近在做一个新项目的时候有一个接口是POST一个mobile字段来获取验证码，但是却发现，不论是系统的请求还是AFNETWork都可以正常调用。
系统请求1
//第一步，创建URLNSURL*url = [NSURLURLWithString:@"https://tms.beta.ule.com/deliveryApp/router/rest?method=delivery.deliverystaff.sendsmscode"];
//第二步，创建请求
NSMutableURLRequest*request = [[NSMutableURLRequestalloc]initWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:10];
[request setHTTPMethod:@"POST"];
NSString*str =@"mobile=***********";//设置参数
NSData*data = [strdataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPBody:data];
//第三步，连接服务器
NSURLConnection*connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
NSLog(@"%@",request.allHTTPHeaderFields);
[connection start];
系统请求2
//获得NSURLSession对象NSURLSession*session = [NSURLSessionsharedSession];
//创建请求
NSMutableURLRequest*request = [NSMutableURLRequestrequestWithURL:[NSURLURLWithString:@"https://tms.beta.ule.com/deliveryApp/router/rest"]];
request.HTTPMethod =@"POST";//请求方法
request.HTTPBody = [@"method=delivery.deliverystaff.sendsmscode&mobile=***********"dataUsingEncoding:NSUTF8StringEncoding];//请求体
//创建任务
NSURLSessionDataTask*task = [sessiondataTaskWithRequest:requestcompletionHandler:^(NSData*data,NSURLResponse*response,NSError*error) {
NSLog(@"%@", [NSJSONSerializationJSONObjectWithData:dataoptions:kNilOptionserror:nil]);
}];
//启动任务
[task resume];
MKNetworkKit
UleMK_MKNetworkOperation*op = [[UleMK_MKNetworkOperationalloc]initWithURLString:@"https://tms.beta.ule.com/deliveryApp/router/rest?method=delivery.deliverystaff.sendsmscode"params:nilhttpMethod:@"POST"];[op addParams:@{@"mobile":@"***********"}];
[op addCompletionHandler:^(UleMK_MKNetworkOperation*completedOperation) {
NSLog(@"__%@___",[completedOperationresponseString]);
} errorHandler:^(UleMK_MKNetworkOperation*completedOperation,NSError*error) {
NSLog(@"__%@__",error);
}];
[op start];
UleMK_MKNetworkEngine* engine = [[UleMK_MKNetworkEnginealloc]initWithHostName:@"tms.beta.ule.com"];
UleMK_MKNetworkOperation*op = [engine operationWithPath:@"deliveryApp/router/rest?method=delivery.deliverystaff.sendsmscode"params:@{@"mobile":@"***********"}httpMethod:@"POST"ssl:YES];
[op addCompletionHandler:^(UleMK_MKNetworkOperation*completedOperation) {
NSLog(@"__%@___",[completedOperationresponseString]);
} errorHandler:^(UleMK_MKNetworkOperation*completedOperation,NSError*error) {
NSLog(@"__%@__",error);
}];
[engine enqueueOperation: op];
在缓慢的调试过程中发现，拼接一个完整的URL，POST参数为nil的时候，是可以获取到验证码信息的，那么就把目标放在POST参数上了。
最后发现在MKNetworkKit中有一个
//http://stackoverflow.com/questions/1446509/handling-redirects-correctly-with-nsurlconnection
- (NSURLRequest*)connection: (NSURLConnection*)inConnection
willSendRequest: (NSURLRequest*)inRequest
redirectResponse: (NSURLResponse*)inRedirectResponse;
{
// *******start
// yushengyang 20160316 tms.beta.ule.com不支持重定向
if([inRequest.URL.absoluteStringrangeOfString:@"tms.beta.ule.com"].location!=NSNotFound|| [inRequest.URL.absoluteStringrangeOfString:@"tms.ule.com"].location!=NSNotFound) {
returninRequest;
}
// *******end
NSMutableURLRequest*r = [self.requestmutableCopy];
if(inRedirectResponse) {
[rsetURL: [inRequestURL]];
}else{
// Note that we need to configure the Accept-Language header this late in processing
// because NSURLRequest adds a default Accept-Language header late in the day, so we
// have to undo that here.
// For discussion see:
//http://lists.apple.com/archives/macnetworkprog/2009/Sep/msg00022.html
NSString* accept_language =self.shouldSendAcceptLanguageHeader? [selflanguagesFromLocale] :nil;
[rsetValue:accept_languageforHTTPHeaderField:@"Accept-Language"];
}
returnr;
}
在粗体标记中，第一个是我加的代码，因为这个问题可能做后段接口的同事引起的，所以我只屏蔽该接口。第二个是框架写的，这里不太明白为何每次都要重新弄一个request，虽然该request就是代理中的，但是不知道为何，只要用的不是inRequest而是self.request通过copy而来的，都会导致收不到验证码。
看了看AFNetwork中的处理
- (NSURLRequest*)connection:(NSURLConnection*)connection
willSendRequest:(NSURLRequest*)request
redirectResponse:(NSURLResponse*)redirectResponse
{
if(self.redirectResponse) {
returnself.redirectResponse(connection, request, redirectResponse);
}else{
returnrequest;
}
｝
po self.request.allHTTPHeaderFields
{
}
po inRequest.allHTTPHeaderFields
{
Accept = "*/*";
"Accept-Encoding" = "gzip, deflate";
"Accept-Language" = "en-us";
}
对比了本地self.request和inRequest，虽然有不同的参数，但是即使本地设置了也不能生效，此处有疑问，只能单独处理该域名下的请求。
-(NSURLRequest*)connection:(NSURLConnection*)connection
willSendRequest:(NSURLRequest*)request
redirectResponse:(NSURLResponse*)redirectResponse;
{
if(
redirectResponse){// we don't use the new request built for us, except for the URL
NSURL*newURL=[request URL];
// Previously, store the original request in _originalRequest.
// We rely on that here!
NSMutableURLRequest*newRequest=[_originalRequest mutableCopy];
[newRequest setURL:newURL];
returnnewRequest;
}else{
returnrequest;
}
}
查找到其他博文提到的代码，我代码里的redirectResponse是nil，似乎是后台的接口不支持这种处理。
只用实现了这个block才会有自定义，加上有博文指出这个代理方法的作用是重定向，感觉是MK中有写鸡肋，不过做后台的同事应该在处理上也有问题，特此记录，与君共勉！
