//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
