AFNetworking 2.0 sample

HTTPEngine.h

#import <Foundation/Foundation.h>
#import "AFNetworking.h"

@interface HTTPEngine : AFHTTPRequestOperationManager


+ (HTTPEngine *)sharedInstance;

- (AFHTTPRequestOperation *)getWeatherDataWithXMLFormat;

- (AFHTTPRequestOperation *)getWeatherDataWithJSONFormat;

@end

HTTPEngine.m

#import "HTTPEngine.h"

#define BASEURL @"http://www.raywenderlich.com/"

@implementation HTTPEngine

+ (HTTPEngine *)sharedInstance
{
    static dispatch_once_t pred = 0;
    __strong static HTTPEngine *_sharedHttp = nil;
    dispatch_once(&pred, ^{
        _sharedHttp = [[self alloc] initWithBaseURL:[NSURL URLWithString:BASEURL]];

    });
    return _sharedHttp;
}

#pragma mark - API
- (AFHTTPRequestOperation *)getWeatherDataWithXMLFormat
{
    AFHTTPRequestOperation *requestOperation = [self GET:@"demos/weather_sample/weather.php" parameters:@{@"format":@"xml"} success:^(AFHTTPRequestOperation *operation, id responseObject) {
        
        NSString *responseStr = [[NSString alloc] initWithData:operation.responseData encoding:NSUTF8StringEncoding];
        NSLog(@"XML:%@",responseStr);
        NSLog(@"responseObject:%@",responseObject);
        
        //接下来可使用XMLReader解析得到的 xml 数据
        /*
        NSError *xmlPaserError = nil;
        NSDictionary *responseDict = [XMLReader dictionaryForXMLData:operation.responseData error:&xmlPaserError];
        NSLog(@"responseDict:%@",responseDict);
        */
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
       
        NSLog(@"error:%@",error);
    
    }];
    
    requestOperation.responseSerializer = [AFXMLParserResponseSerializer serializer];
    
    return requestOperation;
}

- (AFHTTPRequestOperation *)getWeatherDataWithJSONFormat
{
    AFHTTPRequestOperation *requestOperation = [self GET:@"demos/weather_sample/weather.php" parameters:@{@"format":@"json"} success:^(AFHTTPRequestOperation *operation, id responseObject) {
        
        //此时得到的就是一个字典对象(NSDictionary),因为 AFNetworking 原生对 JSON 友好
        NSLog(@"JSON:%@",responseObject);
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        
        NSLog(@"error:%@",error);
        
    }];
    
    requestOperation.responseSerializer = [AFJSONResponseSerializer serializer];
    
    return requestOperation;
}
@end