AFURLSessionManager 上传下载使用代码说明

1、下载 creating a download task

  nsurlsessionconfiguration *configuration = [nsurlsessionconfiguration defaultsessionconfiguration]; 
  afurlsessionmanager *manager = [[afurlsessionmanager alloc] initwithsessionconfiguration:configuration]; 
  nsurl *url = [nsurl urlwithstring:@"http://example.com/download.zip"]; 
  nsurlrequest *request = [nsurlrequest requestwithurl:url]; 
  nsurlsessiondownloadtask *downloadtask = [manager downloadtaskwithrequest:request progress:nil destination:^nsurl *(nsurl *targetpath, nsurlresponse *response) { 
    nsurl *documentsdirectoryurl = [[nsfilemanager defaultmanager] urlfordirectory:nsdocumentdirectory indomain:nsuserdomainmask appropriateforurl:nil create:no error:nil]; 
    return [documentsdirectoryurl urlbyappendingpathcomponent:[response suggestedfilename]]; 
  } completionhandler:^(nsurlresponse *response, nsurl *filepath, nserror *error) { 
    nslog(@"file downloaded to: %@", filepath); 
  }]; 
  [downloadtask resume]; 

2、上传 creating an upload task

 nsurlsessionconfiguration *configuration = [nsurlsessionconfiguration defaultsessionconfiguration]; 
  afurlsessionmanager *manager = [[afurlsessionmanager alloc] initwithsessionconfiguration:configuration]; 
  nsurl *url = [nsurl urlwithstring:@"http://example.com/upload"]; 
  nsurlrequest *request = [nsurlrequest requestwithurl:url]; 
  nsurl *filepath = [nsurl fileurlwithpath:@"file://path/to/image.png"]; 
  nsurlsessionuploadtask *uploadtask = [manager uploadtaskwithrequest:request fromfile:filepath progress:nil completionhandler:^(nsurlresponse *response, id responseobject, nserror *error) { 
    if (error) { 
      nslog(@"error: %@", error); 
    } else { 
      nslog(@"success: %@ %@", response, responseobject); 
    } 
  }]; 
  [uploadtask resume]; 

3、批量上传 creating an upload task for a multi-part request, with progress

nsmutableurlrequest *request = [[afhttprequestserializer serializer] multipartformrequestwithmethod:@"post" urlstring:@"http://example.com/upload" parameters:nil constructingbodywithblock:^(id<afmultipartformdata> formdata) { 
      [formdata appendpartwithfileurl:[nsurl fileurlwithpath:@"file://path/to/image.jpg"] name:@"file" filename:@"filename.jpg" mimetype:@"image/jpeg" error:nil]; 
    } error:nil]; 
  afurlsessionmanager *manager = [[afurlsessionmanager alloc] initwithsessionconfiguration:[nsurlsessionconfiguration defaultsessionconfiguration]]; 
  nsurlsessionuploadtask *uploadtask; 
  uploadtask = [manager 
         uploadtaskwithstreamedrequest:request 
         progress:^(nsprogress * _nonnull uploadprogress) { 
           // this is not called back on the main queue. 
           // you are responsible for dispatching to the main queue for ui updates 
           dispatch_async(dispatch_get_main_queue(), ^{ 
             //update the progress view 
             [progressview setprogress:uploadprogress.fractioncompleted]; 
           }); 
         } 
         completionhandler:^(nsurlresponse * _nonnull response, id _nullable responseobject, nserror * _nullable error) { 
           if (error) { 
             nslog(@"error: %@", error); 
           } else { 
             nslog(@"%@ %@", response, responseobject); 
           } 
         }]; 
  [uploadtask resume]; 

4、数据任务 creating a data task

  nsurlsessionconfiguration *configuration = [nsurlsessionconfiguration defaultsessionconfiguration]; 
  afurlsessionmanager *manager = [[afurlsessionmanager alloc] initwithsessionconfiguration:configuration]; 
  nsurl *url = [nsurl urlwithstring:@"http://httpbin.org/get"]; 
  nsurlrequest *request = [nsurlrequest requestwithurl:url]; 
  nsurlsessiondatatask *datatask = [manager datataskwithrequest:request completionhandler:^(nsurlresponse *response, id responseobject, nserror *error) { 
    if (error) { 
      nslog(@"error: %@", error); 
    } else { 
      nslog(@"%@ %@", response, responseobject); 
    } 
  }]; 
  [datatask resume]; 

5、请求参数设置 request serialization

request serializers create requests from url strings, encoding parameters as either a query string or http body.
  nsstring *urlstring = @"http://example.com"; 
  nsdictionary *parameters = @{@"foo": @"bar", @"baz": @[@1, @2, @3]}; 

总结

以上所述是小编给大家介绍的afurlsessionmanager 上传下载使用代码说明，希望对大家有所帮助