2 ooomiao oOOMIAO 于 2013.05.27 09:45 提问

AFNetworking SPARQL查询失败

在IOS中使用AFNetworking 获取是山名的列表,运行之后报出:"Bad URL"错误。

 - (void) loadMountains
{
    NSString * loadMountainQueries = @"select * where { ?Mountain a dbpedia-owl:Mountain; dbpedia-owl:abstract ?abstract. FILTER(langMatches(lang(?abstract),"EN")) } ";        
    NSString * urlString = [NSString stringWithFormat:@"http://dbpedia.org/sparql/?query=%@",loadMountainQueries];

    NSLog(@"%@", urlString);

    NSURL *url = [NSURL URLWithString:urlString];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];    

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

    [AFHTTPRequestOperation addAcceptableContentTypes:
     [NSSet setWithObjects:@"application/json", @"sparql-results+json", @"text/json", @"text/html", @"text/xml", nil]];

    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        NSLog(@"Response %@", [operation responseString]);
    }
    failure:^(AFHTTPRequestOperation *operation, NSError *error)
    {
        NSLog(@"Response %@", [operation responseString]);
        NSLog(@"Error: %@", error);
    }];

    [operation start];
}

假设AFHTTPRequestOperation自动编码一个URL。但是使用了自动生成的URL之后还是报出URL错误。

在safari中运行可以,在objective-c中就不行了。

1个回答

lyyybz
lyyybz   Rxr 2016.08.19 10:45

请问你的问题解决了么,我碰到和你一样的问题!

Csdn user default icon
上传中...
上传图片
插入图片
准确详细的回答,更有利于被提问者采纳,从而获得C币。复制、灌水、广告等回答会被删除,是时候展现真正的技术了!