IOS JSON解析嵌套数据

Posted 2023-03-16

【中文标题】IOS JSON解析嵌套数据

【英文标题】：IOS JSON Parsing Nested Data

【发布时间】：2013-10-29 21:13:08

【问题描述】：

嗯，我想这是一个简单的问题（因为我最近才学习 ios）。

我看过的大多数教程都展示了简单的 JSON 键值示例。 但是我正在寻找具有以下格式的 JSON 结构：

所以我可以说一个 JSON 页面，它显示如下内容：

loans: (
    
    activity = "Personal Products Sales";
    "basket_amount" = 0;
    "bonus_credit_eligibility" = 1;
    "borrower_count" = 1;
    description =         
        languages =             (
            en
        );
    ;
    "funded_amount" = 0;
    id = 623727;
    image =         
        id = 1457061;
        "template_id" = 1;
    ;
    "loan_amount" = 475;
    location =         
        country = Philippines;
        "country_code" = PH;
        geo =             
            level = country;
            pairs = "13 122";
            type = point;
        ;
        town = "Maasin City, Leyte";
    ;
    name = Zita;
    "partner_id" = 145;
    "planned_expiration_date" = "2013-11-28T21:00:02Z";
    "posted_date" = "2013-10-29T21:00:02Z";
    sector = Retail;
    status = fundraising;
    use = "to buy additional stocks of soap, toothpaste, dish washing products, etc.";
,

例如，如果我想提取名称，我了解密钥对的想法，所以我只需执行以下操作：

 NSError* error;
NSDictionary* json = [NSJSONSerialization
                      JSONObjectWithData:responseData //1

                      options:kNilOptions
                      error:&error];

NSArray* latestLoans = [json objectForKey:@"loans"]; //2
 NSDictionary* loan = [latestLoans objectAtIndex:0];
NSString *name = [loan objectForKey:@"name"];

然后 *name 应该评估为：Zita。

但我的问题是......

1) 我需要做什么才能访问结构深处的数据，例如“level = country;” （关卡位于“位置”内的“地理”内）

有人能解释一下怎么做吗？

【问题讨论】：

继续做更多相同的事情。

【参考方案1】：

和你现在做的完全一样:)

NSDictionary* loan = [latestLoans objectAtIndex:0];
NSDictionary* location = [loan objectForKey:@"location"];
NSDictionary* geo = [locationobjectForKey:@"geo"];
NSString* level = [geo objectforKey:@"country"];

或更短：

NSDictionary* loan = [latestLoans objectAtIndex:0];
NSString* level = loan[@"location"][@"geo"][@"level"];