AFN It internally by default the server response data as JSON to parse, so if the server returned to me is not JSON data then request an error, this time need to set the AFN response information parsing. AFN provides three ways to parse the response information, namely:afjsonresponseserializer---------JSON default mode
AFXMLParserResponseSerializer---XML
AFHTTPResponseSerializer---------二进制响应数据
还有一种情况就是服务器返回给我们的数据格式不太一致(开发者工具Content-Type:text/xml),那么这种情况也有可能请求不成功。解决方法:
直接在源代码中修改,添加相应的Content-Type
拿到这个属性,添加到它的集合中Afjsonresponseserializer Pattern Sample code:
-(void) json{//1. Create a Session Managerafhttpsessionmanager* Manager =[Afhttpsessionmanager Manager]; Nsdictionary*DICTM = @{ @"username":@"520it", @"pwd":@"520it", @"type":@"JSON" }; //2. Send Get[Manager GET:@"Http://120.25.226.186:32812/login"PARAMETERS:DICTM Progress:nil success:^ (nsurlsessiondatatask * _nonnull task,ID_nullable Responseobject) {NSLog (@"Success--%@", Responseobject); } Failure:^ (Nsurlsessiondatatask * _nullable task, Nserror *_nonnull Error) {NSLog (@"Failure--%@", error); }];}
AFXMLParserResponseSerializer模式示例代码:
-(void) xml{//1. Create a Session Managerafhttpsessionmanager* Manager =[Afhttpsessionmanager Manager]; Nsdictionary*DICTM = @{ @"type":@"XML" }; Manager.responseserializer=[Afxmlparserresponseserializer Serializer]; //2. Send Get[Manager GET:@"Http://120.25.226.186:32812/video"PARAMETERS:DICTM Progress:nil success:^ (nsurlsessiondatatask * _nonnull task, Nsxmlparser *parser) { //Set up proxyParser.Delegate=Self ; //Start parsing[parser Parse]; } Failure:^ (Nsurlsessiondatatask * _nullable task, Nserror *_nonnull Error) {NSLog (@"Failure--%@", error); }];}#pragmamark-nsxmlparserdelegate-(void) Parser: (Nsxmlparser *) parser didstartelement: (NSString *) elementname NamespaceURI: (NSString *) NamespaceURI QualifiedName: (NSString *) QName attributes: (nsdictionary<nsstring *,nsstring *> *) attributedict{NSLog (@"%@---%@", elementname,attributedict);}
AFHTTPResponseSerializerPattern Sample Code:
-(void) http{//1. Create a Session Managerafhttpsessionmanager* Manager =[Afhttpsessionmanager Manager]; NSString*urlstr =@"Http://img4q.duitang.com/uploads/item/201411/21/20141121231731_PkXNk.jpeg"; //How to adjust the resolution of AFN//Manager.responseserializer = [Afjsonrequestserializer serializer];//defaultManager.responseserializer =[Afhttpresponseserializer Serializer]; //2. Send Get[Manager get:urlstr Parameters:nil Progress:nil success:^ (nsurlsessiondatatask * _nonnull task,ID_nullable Responseobject) {NSLog (@"Success--%@", [Responseobjectclass]); NSLog (@"%@", [Nsthread CurrentThread]); Self.imageView.image=[UIImage Imagewithdata:responseobject]; } Failure:^ (Nsurlsessiondatatask * _nullable task, Nserror *_nonnull Error) {NSLog (@"Failure--%@", error); }];}
-(void) http2{//1. Create a Session Managerafhttpsessionmanager* Manager =[Afhttpsessionmanager Manager]; NSString*urlstr =@"http://www.baidu.com"; //Adjust the resolution of AFN if the error (text/html is provided in the error), 70% or 80% is because of the lack of these two code reasons manager.responseSerializer.acceptableContentTypes = [Nsset setwithobject:@ "text/html"];
//error domain=com.alamofire.error.serialization.response code=-1016 "Request failed:unacceptable content-type: Text/html ", missing the above code-reported errorManager.responseserializer = [Afhttpresponseserializer serializer];
//error domain=nscocoaerrordomain code=3840 "JSON text does not start with array or object and option to allow Frag ments not set. " , the error is missing from the above code report //2. Send Get[Manager get:urlstr Parameters:nil Progress:nil success:^ (nsurlsessiondatatask * _nonnull task,ID_nullable Responseobject) {NSLog (@"Success--%@", [Responseobjectclass]); } Failure:^ (Nsurlsessiondatatask * _nullable task, Nserror *_nonnull Error) {NSLog (@"Failure--%@", error); }];}
-afnetworking Serialization of iOS network