Question

我在我的应用程序中使用AFNetworking框架，我能够发出HTTP请求并能够从服务器获得响应，但我无法解析JSON。

以下是我的代码：

我创建了一个名为WebServices的单例类，并创建了一个发出HTTP请求的方法。

+(void)getCompaniesc:(NSString *)companyID onSucess:(PSACompletionBlock2)onSucess
{
    NSDictionary *params = @{@"companyId": companyID};

    [[[WebServices sharedInstance] operationQueue] cancelAllOperations];

    [[WebServices sharedInstance] postPath:@"GetCompany?" parameters:params success:^(AFHTTPRequestOperation *operation, id response)
     {
         NSString *st = [NSString stringWithFormat:@"%@",response];
         NSLog(@"st=%@",st);

         if (onSucess)
         {
             onSucess(YES, response);
         }


     }failure:^(AFHTTPRequestOperation *operation, NSError *error){

         NSLog(@"%s: AFHTTPRequestOperation error: %@", __FUNCTION__, error);
     }];
}

并从我的ViewController我使用以下代码调用上述函数：

[WebServicesClass getCompaniesc:companyID onSucess:^(BOOL success, id jsonresponse) {

}];

我从服务器获得类型为id的响应。

以下是我对服务器的回复：

[{"ExistsInDB":"False","CanSave":"True","EntityName":"ACCOUNT","TypeDescription":"Company","TypePluralDescription":"Companies","RequiredProperties":"Chiever.Data.SAQueryFieldSet","MetaData":"","ReadOnly":"False","ACCTNAME":"","AREA_ID": "","ACCT_TYPE_ID":"","ADDR1":"","ADDR2":"","ADDR3":"","TOWN”:””,”COUNTY":"","POSTCODE":"","COUNTRY":"","TEL":"","FAX":"","EMAILORWEB":"","BUYGRP_ID": "","STATUS":"","SIC_CODE_ID”:””,”CURRENCY_ID":"","CALL_FREQ": "0","DORMANT":"False","CREATOR_ID": "","CREATED_ON":"01/01/0001 00:00:00","LAST_EDITOR_ID":"","LAST_EDITED":"01/01/0001 00:00:00","LAST_ACTION_BY":"","LAST_ACTION":"01/01/0001 00:00:00","NEXT_ACTION_BY":"","NEXT_ACTION":"01/01/0001 00:00:00","LOCALE_ID":"","BusinessUnits": "System.Collections.Generic.List`1[chiever.Platform.LookupIdValuePair]","ACCT_ID":"0000000320"}]

任何人都可以帮我解决这个问题吗？

Answer 1

做这个检查：

NSDictionary *dic = [NSJSONSerialization JSONObjectWithData: jsonresponse options:NSJSONReadingMutableContainers error:&error];

如果您的返回是一个数组，请使用：

NSArray *arr = [NSJSONSerialization JSONObjectWithData: jsonresponse options:NSJSONReadingMutableContainers error:&error];

Answer 2

A。）如果您使用AFHTTPRequestOperation，请确保设置responseSerializer：

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
operation.responseSerializer = [AFJSONParserResponseSerializer serializer];

另外，请确保将“Content-Type”请求设置为“text / json”。现在，如果您从服务器获得JSON响应，那么您可能应该获得字典responseObject。

B。）如果您仍然获得NSData，则可以将NSData转换为NSString以查看/调试您从服务器获取的内容：

NSString *stringResponse = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; // Use appropriate encoding
NSLog(@"String Response: %@", stringResponse);

C。）如果你确定从服务器获得了json响应，你总是可以使用json序列化将原始NSData响应转换为NSDictionary：

id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSLog(@"JSON: %@", json);

希望这有帮助。

Answer 3

如果您的服务器返回"Content-Type: application/json"标头，您将获得一个NSDictionary来自AFNetworking的json响应。或者在您的情况下，包含NSDictionaries的NSArray。

在PHP中，可以通过添加

来修改标题

header('Content-Type: application/json');

到脚本的顶部。

如何在iOS中使用AFNetworking解析JSON？

3 个答案: