json数据转换

NSError*error;

//获取文件路径NSString*filePath = [[NSBundlemainBundle]pathForResource:@"AppConfig"ofType:@"json"];

//根据文件路径读取数据NSData*jdata = [[NSDataalloc]initWithContentsOfFile:filePath];

//格式化成json数据

idjsonObject = [NSJSONSerializationJSONObjectWithData:jdataoptions:kNilOptionserror:&error];

附网上查到的读写方法：

将Json存进本地文件夹

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *path=[paths objectAtIndex:0];

NSString *Json_path=[path stringByAppendingPathComponent:@"JsonFile.json"];

//==写入文件

NSLog(@"%@",[JsonData writeToFile:Json_path atomically:YES] ? @"Succeed":@"Failed");

-----------------------

读取Json

//==Json文件路径

NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *path=[paths objectAtIndex:0];

NSString *Json_path=[path stringByAppendingPathComponent:@"JsonFile.json"];

//==Json数据

NSData *data=[NSData dataWithContentsOfFile:Json_path];

//==JsonObject

id JsonObject=[NSJSONSerialization JSONObjectWithData:data

options:NSJSONReadingAllowFragments

error:&error]

//nslog (@"%@",jsonobject);打印json字典