Question

在我的应用程序中，我使用了Json。这是我的应用程序中的JSON响应

This is my Response:
[
    {
    "response": "Success",
    "errorMsg": "",
    "userId": "1",
    "userCompany": "xxxyy",
    "userName": "sham",
    "userAddress": "chennai",
    "userCity": "xxxxx",
    "userMobile": "xxxx",
    "userEmail": "xxx"
},
{
    "response": "Success",
    "errorMsg": "",
    "productImage": "http://www.iii.jpg",
    "productDescription": "Loaded box on pallets - Bart's package",
    "productCost": "10",
    "productBoxWeight": "10.0"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1.4",
    "transportCountry": "Colombia",
    "transportPort": "Havana"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.7",
    "transportCountry": "Brazil",
    "transportPort": "Santos"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.9",
    "transportCountry": "South Africa",
    "transportPort": "Durban"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.9",
    "transportCountry": "Chili",
    "transportPort": "San Antonio"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "2.7",
    "transportCountry": "Australia",
    "transportPort": "Maersk"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1",
    "transportCountry": "Marocco",
    "transportPort": "Casablanca"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1",
    "transportCountry": "Kuwait",
    "transportPort": "Shuwaikh"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1",
    "transportCountry": "Jordan",
    "transportPort": "Aqaba"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.8",
    "transportCountry": "Saoudi Arabia",
    "transportPort": "Jeddah"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.8",
    "transportCountry": "Malta",
    "transportPort": "Maraxklokk"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "0.9",
    "transportCountry": "Mexico",
    "transportPort": "Veracruz"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1.2",
    "transportCountry": "Thailand",
    "transportPort": "Bangkok"
},
{
    "response": "Success",
    "errorMsg": "",
    "transportCost": "1",
    "transportCountry": "Thailand",
    "transportPort": "havana"
}
]

我怎样才能在一个阵列中检索前两个集合，在另一个阵列中检索其他集合...我是新手，请帮我修复它...

Answer 1

JSON没有按任何顺序定义键或值（包括JSON数组中的值）。因此，您必须在解析后自己对项目进行排序。

为了解析JSON，您可以使用any JSON parser available（我更喜欢SBJson）。通常，解析器提供了将JSON转换为NSDictionary的可能性，因此您可以轻松处理其内容。

Answer 2

为了解析您的JSON并获取Objective-C对象，请使用以下代码（其中data是您刚刚获得的JSON）：

NSError *e = nil;
NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:data 
                                          options:NSJSONReadingMutableContainers 
                                          error:&e];

之后，您将拥有一个包含多个词典（NSArray）的NSDictionary。要获得第一个，请执行：

if (!jsonArray) {
  NSLog(@"Error parsing JSON: %@", e);
} else {
    // get the first dictionary
    NSDictionary *dict = [jsonArray objectAtIndex:0];    
}

如何将数组值检索到不同的数组？

2 个答案: