AFNetworking 2.0 使用總結

iOS應用開發，存在網絡請求是在所不免的，而AFNetworking是一個很不錯的選擇。如下是本人對AFNetworking請求的一些總結，希望能幫到你們！

1.JSON Post請求

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NSString *strName = @ "user1" ; NSString *strPsw = @ "pwd1" ;   AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFJSONRequestSerializer serializer]; NSDictionary *parameters = [NSDictionary dictionaryWithObjectsAndKeys:strName, @ "user" , strPsw, @ "password" , nil]; NSString *strURL = [GT123_ServerHost stringByAppendingString:GT123_LogonServlet]; [manager POST:strURL parameters:parameters        success:^(AFHTTPRequestOperation *operation, id responseObject)   {       if (responseObject != nil)       {           NSDictionary *dicRes = responseObject;           NSString *strState = [dicRes objectForKey:@ "state" ];           if (strState && [strState isEqualToString:@ "success" ])           {               NSString *strSession = [dicRes objectForKey:@ "session" ];                              NSLog(@ "%@" , strSession);           }  else {           }       }  else {       }   } failure:^(AFHTTPRequestOperation *operation, NSError *error)   {   }];

上段代碼是用戶登陸請求，用到了AFHTTPRequestOperationManager的POST請求。請求參數放到NSDictionary裏（NSMutableDictionary也可），strURL是請求服務地址，success和failure後面寫請求回調內容。返回內容responseObject實際上是一個NSDictionary對象，解析比較容易。

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2.JSON Get請求

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long long lTimestamp = [[NSDate date] timeIntervalSince1970] * 1000;   AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; NSString *strURL = [NSString stringWithFormat:@ "%@%@?max=20&et=%lld" ,GT123_ServerHost,GT123_GetNewsListBeforeServlet, lTimestamp]; [manager GET:strURL parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {      if (responseObject != nil)      {          NSDictionary *dicRes = responseObject;          NSString *strState = [dicRes objectForKey:@ "state" ];          if (strState && [strState isEqualToString:@ "success" ])          {              NSArray *lNews = [dicRes objectForKey:@ "post_list" ];              if (lNews && lNews.count > 0)              {                  NSLog(@ "news count - %lu" , (unsigned  long )lNews.count);              }          }  else {          }      }  else      {      } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { }];

上段代碼是獲取新聞列表的具體實現，用到了AFHTTPRequestOperationManager的GET請求。因此請求參數放到strURL裏。請求返回內容responseObject也是一個NSDictionary對象。

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3.圖片上傳

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- ( void )uploadImg:(UIImage *)img withName:(NSString *)imgName {            NSData *imageData = UIImageJPEGRepresentation(img, 1.0);            NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];      [parameters setObject:imgName forKey:@ "name" ];      [parameters setObject:@ "jpg" forKey:@ "type" ];            AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];      manager.requestSerializer = [AFJSONRequestSerializer serializer];      NSString *strURL = [GT123_ServerHost stringByAppendingString:GT123_UploadPostPictureServlet];      [manager POST:strURL parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData)       {           if (imageData)           {               [formData appendPartWithFileData:imageData name:imgName fileName:imgName mimeType:@ "image/jpeg" ];           }       } success:^(AFHTTPRequestOperation *operation, id responseObject) {                      if (responseObject)           {               NSDictionary *dicRes = responseObject;               NSString *strState = [dicRes objectForKey:@ "state" ];               if (strState && [strState isEqualToString:@ "success" ])               {                   NSLog(@ "upload success!" );               }  else {               }           }  else {           }                  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {       }]; }

以上代碼經過post方法將圖片上傳到服務器。與上述所講json post請求不一樣，這裏須要填充constructingBodyWithBlock內容，也就是圖片數據和參數。圖片數據是NSData類型，須要將UIImage轉成NSData。若是須要傳其餘參數的話，放到parameters裏，同圖片數據一塊兒上傳服務器。

 

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1	[formData appendPartWithFileData:imageData name:imgName fileName:imgName mimeType:@ "image/jpeg" ];

上一行代碼裏name和fileName參數能夠隨意給個值，不要太糾結。

返回內容仍是一個NSDictionary對象。

 

 

AFNetworking請求方面，本人的總結暫時有這些，後續再補上...