将字符串作为JSON对象发送

Question

我有一个赋值,要求我把一个字符串作为一个json对象,并在发送对象之前,我必须把这个json对象放入一个http头.这是我的代码:

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSString *nid = @"";
    NSString *vocab = @"";
    NSString *inturl = @"testoverview";
    NSString *mail = @"chh@fbr.dk";
    NSString *md5pw = @"4d57e7ef1b7c3f431aca424764e9d786";

    NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                                    nid, @"nid", 
                                    vocab, @"vocab",
                                    inturl, @"inturl",
                                    mail, @"mail",
                                    md5pw, @"md5pw",nil];


    NSString *json = @"{nid:"",vocab:"",inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}";


    NSError *error;



    NSString *url = @"http://udv.taenk.dk/chh/drupal-taenk/services/mobile";


    NSData *data = [json dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];

    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary options:NSJSONWritingPrettyPrinted error:&error];


    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLCacheStorageAllowed timeoutInterval:30.0];

     NSURLConnection *connction = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    FSRemoteExecutor *remote = [[FSRemoteExecutor alloc] init];
    [remote execute:url andHandler:[FSProductTestHandler alloc] JSONString:jsonString JSONData:jsonData Connection:connction];
    [remote connection:connction didReceiveData:jsonData];
    [remote connectionFinishedLoading:connction];

我的问题是我不能将jsonDictionary与对象一起使用并发送它,因为服务必须接收的字符串格式是:

"{"nid":"","vocab":"","inturl":"testoverview","mail":"","md5pw":""}"

字典会在字符串中插入=,这将不会给我服务的响应.

我想发送一个字符串(代码中的json)作为dataWithJSONObject:jso,喜欢这样:

NSData *jsonData = [NSJSONSerialization dataWithJSONObject:json options:NSJSONWritingPrettyPrinted error:&error];

但我得到一个错误:

由于未捕获的异常'NSInvalidArgumentException'而终止应用程序,原因:'* + [NSJSONSerialization dataWithJSONObject:options:error:]:JSON write中的顶级类型无效'

任何人都可以帮我这个吗？

Answer 1

但为何使用NSJSONSerialization呢？你做了自己的JSON字符串(NSString *json = @"{nid:"",vocab:"",inturl:testoverview, mail:chh@fbr.dk, md5pw:4d57e7ef1b7c3f431aca424764e9d786}";).然后你不需要再跑一次了NSJSONSerialization.

只需从您的NSData中生成一个NSData *json (NSString),然后将其发送到服务器.

使你的NSData像这样:

NSData *jsonPayload = [json dataUsingEncoding:NSUTF8StringEncoding];