在Restkit iOS中解析没有对象映射的JSON [英] Parsing JSON without Object Mapping in Restkit iOS

问题描述

我创建了一个登录页面，它使用Restkit RKClient 来发送登录详细信息，并获取JSON数据（用户或错误）。我希望能够在没有对象映射的情况下解析JSON数据，只需要JSON到字典。原因是它只是一个简单的登录发送用户名和密码，如果我设置对象映射，我将必须将登录详细信息设置为Login对象，然后设置路由等...它似乎是一个有点啰嗦。

I've created a login page which uses Restkit RKClient to send login details, and get back JSON data (either the user or an error). I want to be able to parse the JSON data without object mapping, just JSON to dictionary. The reason for this is it's just a simple login thats sending username and password, if I set up object mapping, i'll have to set up the login details into a Login object, then set up routing etc... and it seem a bit long winded.

这是我的代码

- (IBAction)login:(id)sender
{
    [self.activityIndicator startAnimating];
    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObject:self.username.text forKey:@"username"];
    [params setObject:self.password.text forKey:@"password"];
    [params setObject:@"login" forKey:@"type"];
    [[RKClient sharedClient] post:@"/login" params:params delegate:self];

}

- (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response {
    if ([request isPOST]) {
        if ([response isJSON]) {
            NSLog(@"Got a JSON response back from our POST: %@", response.bodyAsString);
        }
    }

    [self.activityIndicator stopAnimating];

}

如何将JSON数据提供给可读对象？谢谢

How can I get the JSON data to a readable object? Thanks

推荐答案

您只需在RKResponse对象上调用parsedBody：nil并将返回的对象分配给NSDictionary：

You can simply call parsedBody:nil on your RKResponse object and assign the returned object to an NSDictionary:

responseDict = [response parsedBody:nil];

作为额外检查，我使用一点便利方法来检查响应是否成功：

And as an extra check I use a little convenience method to check for a a successful response:

- (bool) wasRequestSuccessfulWithResponse:(RKResponse*)response {

    bool isSuccessfulResponse = NO; 

    id parsedResponse;

    NSDictionary *responseDict;

    if(response != nil) {

        parsedResponse = [response parsedBody:nil];

        if ([parsedResponse isKindOfClass:[NSDictionary class]]) {

            responseDict = [response parsedBody:nil];

            if([[responseDict objectForKey:@"success"] boolValue]) {

                isSuccessfulResponse = YES;
            }
        }

    } 

    return isSuccessfulResponse;

}

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