网络请求

#import <Foundation/Foundation.h>#import "AFNetworking.h"
typedef void(^DidFinishBlock)(AFHTTPRequestOperation *operation,id result);typedef void(^DidFailBlock)(AFHTTPRequestOperation *operation,NSError *error);
@interface DataService : NSObject
//声明类方法+ (AFHTTPRequestOperation *)requestWithURL:(NSString *)url params:(NSMutableDictionary *)params httpMethod:(NSString *)httpMethod didFinishBlock:(DidFinishBlock)didFinishBlock didFailBlock:(DidFailBlock)didFailBlock;

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//类方法实现
@implementation DataService
+ (AFHTTPRequestOperation *)requestWithURL:(NSString *)url params:(NSMutableDictionary *)params httpMethod:(NSString *)httpMethod didFinishBlock:(DidFinishBlock)didFinishBlock didFailBlock:(DidFailBlock)didFailBlock{
//创建请求管理对象 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFHTTPRequestSerializer serializer]; AFHTTPRequestOperation *operation = nil; if ([httpMethod isEqualToString:@"GET"]) { operation = [manager GET:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) { //请求成功// NSLog(@"AF-GET(无文件)请求成功"); if (didFinishBlock) { didFinishBlock(operation,responseObject); } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { //请求失败// NSLog(@"AF-POST(无文件)请求失败"); if (didFailBlock) { didFailBlock(operation,error); } }];
}else if([httpMethod isEqualToString:@"POST"]){ BOOL isFile = NO; for (NSString *key in params) { id value = params[key]; if ([value isKindOfClass:[NSData class]]) { //有文件类型的参数 isFile = YES; break; } } if (!isFile) { //不带文件 operation = [manager POST:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) { //请求成功// NSLog(@"AF-POST(非文件)请求成功"); if (didFinishBlock) { didFinishBlock(operation, responseObject); } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { //请求失败// NSLog(@"AF-POST（非文件）请求失败"); if (didFailBlock) { didFailBlock(operation, error); } }];

}else{ //带文件 operation = [manager POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { for (NSString *key in params) { id value = params[key]; if ([value isKindOfClass:[NSData class]]) { //往Form表单中添加data数据 [formData appendPartWithFileData:value name:key fileName:key mimeType:@"image/jpeg"]; } } } success:^(AFHTTPRequestOperation *operation, id responseObject) { //请求成功// NSLog(@"AF-POST(带文件)请求成功"); if (didFinishBlock) { didFinishBlock(operation,responseObject); } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { //请求失败// NSLog(@"AF-POST(带文件)请求失败"); if (didFailBlock) { didFailBlock(operation,error); } }]; } }
//设置返回数据的解析方式 operation.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingMutableContainers]; return operation; }