Question

我正在尝试解析iOS中的mapquest地理编码json，但NSJSONSterilization返回null。我检查了在线json检查器，看起来网址实际上是一个json。

以下是NSJSONSerialization

的代码

 if(geocodeResponseData)
 {
     NSLog(@"there is response data");
     //this is logged.
 }


 NSDictionary *mapQuestReponse =  [NSJSONSerialization
                                     JSONObjectWithData:geocodeResponseData
                                     options:kNilOptions
                                     error:&error];

 NSLog(@"mapquestreponse %@", mapQuestReponse);

这是为解析而返回的JSON URL。

http://www.mapquestapi.com/geocoding/v1/batch?key=API----KEY----HIDDEN----&callback=renderBatch&outFormat=json&location=14443%20C%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14510%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14550%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14515%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1480%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095129&location=1600%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095129&location=18486%20Prospect%20Rd,San%20Jose,%20CA%2095070&location=14572%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=5210%20Prospect%20Rd,San%20Jose,%20CA%2095129&location=1600%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095106&location=14480%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1818%20Saratoga%20Ave,San%20Jose,%20CA%2095129&location=18562%20Prospect%20Rd,Saratoga,%20CA%2095070&location=14560%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14420%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1075%20S%20De%20Anza%20Blvd,Cupertino,%20CA%2095129&location=18802%20Cox%20Ave,Saratoga,%20CA%2095070&location=6154%20Bollinger%20Rd,San%20Jose,%20CA%2095129&location=14555%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14000%20Fruitvale%20Ave,Saratoga,%20CA%2095070

由于NULL，它会返回utf-8吗？提前致谢

Answer 1

将网址粘贴到您的webBrowser中，以查看服务器实际返回的内容。这将是这样的：

renderBatch(
    {"results":[{"locations":[{"latLng":{"lng":-122.032921,"lat":37.258389},"adminArea4":"Santa Clara" ........ }
);

这是JSON包含在renderBatch(和);中。那不是真正可解析的JSON。

这是因为您在请求网址中请求回调。从您的请求网址中删除回调参数（&callback=renderBatch），NSJSONSerilization可以毫无问题地反序列化JSON。

Answer 2

尝试从结果字符串中删除renderbatch({});。那将为你做点什么。

Answer 3

你在rederBatch中得到结果，你必须从URL中删除它，使用以下URL

http://www.mapquestapi.com/geocoding/v1/batch?key=Fmjtd%7Cluub206tl1%2Crg%3Do5-9ubah0&outFormat=json&location=14443%20C%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14510%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14550%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14515%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1480%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095129&location=1600%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095129&location=18486%20Prospect%20Rd,San%20Jose,%20CA%2095070&location=14572%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=5210%20Prospect%20Rd,San%20Jose,%20CA%2095129&location=1600%20S%20De%20Anza%20Blvd,San%20Jose,%20CA%2095106&location=14480%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1818%20Saratoga%20Ave,San%20Jose,%20CA%2095129&location=18562%20Prospect%20Rd,Saratoga,%20CA%2095070&location=14560%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14420%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=1075%20S%20De%20Anza%20Blvd,Cupertino,%20CA%2095129&location=18802%20Cox%20Ave,Saratoga,%20CA%2095070&location=6154%20Bollinger%20Rd,San%20Jose,%20CA%2095129&location=14555%20Big%20Basin%20Way,Saratoga,%20CA%2095070&location=14000%20Fruitvale%20Ave,Saratoga,%20CA%2095070

现在您可以使用相同的NSJSONSerilization进行解析。

NSJSONSerialization在iOS中为MapQuest JSON返回null

3 个答案: