网络请求----请求微博信息：需要导入AFNetworking文件和UIKit+AFNetworking文件

 #import

typedefvoid(^FinishDidBlock)(AFHTTPRequestOperation *operation,id result);

typedefvoid(^FailureBlock)(AFHTTPRequestOperation *operation,NSError *error);

@interface DataService : NSObject

+ (AFHTTPRequestOperation *)requestWithURL:(NSString *)url

                        params:(NSMutableDictionary *)paramsDic

                               httpmethod:(NSString *)httpMethod

 finishDidBlock:(FinishDidBlock)finishDidBlock

 failureBlock:(FailureBlock)failureBlock;

@end

#import "DataService.h"

//#import "AFNetworking.h"

#define BASE_URL @"https://open.weibo.cn/2/"

@implementationDataService

+ (AFHTTPRequestOperation *)requestWithURL:(NSString *)url

                       params:(NSMutableDictionary *)paramsDic

                               httpmethod:(NSString *)httpMethod

                 finishDidBlock:(FinishDidBlock)finishDidBlock

                         failureBlock:(FailureBlock)failureBlock

{

   if (paramsDic == nil) {

       paramsDic =[NSMutableDictionarydictionary];

   }

   //拼接URL

   NSMutableString *urlStr = [NSMutableStringstringWithFormat:@"%@%@",BASE_URL,url];

   //参数处理

   NSUserDefaults *defaults = [NSUserDefaultsstandardUserDefaults];

   NSDictionary *sinaWeiboInfo = [defaults objectForKey:@"SinaWeiboAuthData"];

   NSString *accessTokenKey =[sinaWeiboInfo objectForKey:@"AccessTokenKey"];

   if (accessTokenKey.length == 0) {

       returnnil;

   }

   [paramsDic setObject:accessTokenKey forKey:@"access_token"];

   //创建请求管理对象

   AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManagermanager];

   //设置请求数据的解析方式

   manager.requestSerializer = [AFHTTPRequestSerializerserializer];

   AFHTTPRequestOperation *operation = nil;

   if ([httpMethod isEqualToString:@"GET"]) {

       operation = [manager GET:urlStr parameters:paramsDic success:^(AFHTTPRequestOperation *operation, id responseObject) {

           //请求成功

           NSLog(@"AF-GET请求成功");

           //安全判断

           if (finishDidBlock) {

               finishDidBlock(operation,responseObject);

           }

       } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

           //请求失败

           NSLog(@"AF-GET请求失败");

           //安全判断

           if (failureBlock) {

               failureBlock(operation,error);

           }

       }];

   }

   elseif ([httpMethod isEqualToString:@"POST"]){

       //POST请求

       BOOL isFile = NO;

       for (NSString *key in paramsDic) {

           id value = [paramsDic objectForKey:key];

           if ([value isKindOfClass:[NSDataclass]]) {

               //有文件类型的参数

               isFile = YES;

               break;

           }

       }

       if (!isFile) {

           //没有文件

           operation = [manager POST:urlStr parameters:paramsDic success:^(AFHTTPRequestOperation *operation, id responseObject) {

               //请求成功

               NSLog(@"AF-POST(非文件)请求成功");

               //安全判断

               if (finishDidBlock) {

                   finishDidBlock(operation,responseObject);

               }

           } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

               //请求失败

               NSLog(@"AF-POST(非文件)请求失败");

               //安全判断

               if (failureBlock) {

                   failureBlock(operation,error);

               }

           }];

       } else {

           //有文件

           operation = [manager POST:urlStr parameters:paramsDic constructingBodyWithBlock:^(id formData) {

               for (NSString *key in paramsDic) {

                   id value = [paramsDic objectForKey:key];

                   if ([value isKindOfClass:[NSDataclass]]) {

                       //往formData表单中添加data数据

                       [formData appendPartWithFileData:value

             name:key fileName:key mimeType:@"p_w_picpath/jpeg"];

                   }

               }

           } success:^(AFHTTPRequestOperation *operation, id responseObject) {

               //请求成功

               NSLog(@"AF-POST(带文件)请求成功");

               //安全判断

               if (finishDidBlock) {

                   finishDidBlock(operation,responseObject);

               }

           } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

               //请求失败

               NSLog(@"AF-POST(带文件)请求失败");

               //安全判断

               if (failureBlock) {

                   failureBlock(operation,error);

               }

           }];

       }

   }

   //设置返回数据的解析方式

   operation.responseSerializer = [AFJSONResponseSerializerserializerWithReadingOptions:NSJSONReadingMutableContainers];

   return operation;

}

@end

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