iOS開發-使用第三方庫AFNetWorking解析JSON和XML數據

利用第三方庫AFNetWorking解析網絡請求的JSON和MXL數據具有很多方便的地方。

第三方庫的下載地址：https://github.com/AFNetworking/AFNetworking

導入的包和宏定義

#import "ViewController.h"
#import "AFNetworking.h"
#import "GDataXMLNode.h"

//json地址
#define kJSONUrlString @"http://iappfree.candou.com:8080/free/applications/limited?currency=rmb&page=1"

//xml的地址
#define kXMLUrlString @"http://wiapi.hexun.com/news/getlist4.0.php?pid=100234721&pc=20&pn=1&st=0"

//json Post提交方式
#define kJsonPostUrlString @"http://api2.dfc.cn/sjll/v1/homes/basic_data"

//xml Post提交方式
#define kXMLPostUrlString @""

1.對JSON Get方式的請求方式

//對JSON Get方式的請求方式
- (void)jsonGetRequest
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];
    [manager GET:kJSONUrlString parameters:nil success:^(AFHTTPRequestOperation *operation,id responseObject){
        if ([responseObject isKindOfClass:[NSData class]]) {
            NSLog(@"responseObjectData = %@",responseObject);
        }
        else if ([responseObject isKindOfClass:[NSDictionary class]])
        {
            NSLog(@"responseObjectDict = %@",responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation,NSError *error){
        
    }];
    //獲取隊列中有多少個請求
    NSInteger count = manager.operationQueue.operationCount;
    NSLog(@"count = %ld",count);
    //取消隊列中所有的請求
    [manager.operationQueue cancelAllOperations];
}

2.對XML 的Get方式的請求方式

這里還使用了由Google提供的一個第三方庫GData對Xml文件的解析，github下載地址：https://github.com/graetzer/GDataXML-HTML

//錯誤：3840  ---就是表示服務器段的數據不是嚴格的按照xml的格式書寫的
//xml解析
- (void)xmlGetRequest
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    //manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/xml"];
    //自己生成一個響應的序列化對象,不使用系統給的方式
    manager.responseSerializer = [[AFHTTPResponseSerializer alloc] init];
    [manager GET:kXMLUrlString parameters:nil success:^(AFHTTPRequestOperation *operation,id responseObject){
        
        GDataXMLDocument *doc=[[GDataXMLDocument alloc] initWithData:responseObject encoding:NSUTF8StringEncoding error:nil];
        NSString *path = @"/doc/focus/frame/title";
        NSArray *titles=[doc nodesForXPath:path error:nil];
        for (GDataXMLElement *title in titles) {
            NSLog(@"%@",title.stringValue);
        }
        //NSLog(@"requestObject = %@",responseObject);
    
    } failure:^(AFHTTPRequestOperation *operation,NSError *error){
    
        NSLog(@"error = %@",error);
        
    }];
}

3.對JSON 的POST的請求方式

//post請求數據操作JSON數據
- (void)jsonPostRequest:(NSDictionary *)dict
{
    //單例對象
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];
    [manager POST:kJsonPostUrlString parameters:dict success:^(AFHTTPRequestOperation *operation,id responseObject){
        NSLog(@"responseObject = %@",responseObject);
        
    } failure:^(AFHTTPRequestOperation *operation,NSError *error){
    
        NSLog(@"error = %@",error);
        
    }];
}

4.對XML的Post方式請求方式

//post方式請求xml數據
- (void)xmlPostRequest:(NSDictionary *)dict
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    //manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/xml"];
    //使用自己創建的對象取解析xml
    manager.responseSerializer = [AFHTTPResponseSerializer alloc];
    [manager POST:kXMLPostUrlString parameters:dict success:^(AFHTTPRequestOperation *operation,id responseObject){
        
        NSLog(@"responseObject = %@",responseObject);
    
    } failure:^(AFHTTPRequestOperation *operation,NSError *error){
        
        NSLog(@"error = %@",error);
    
    }];
}