iOS随笔小记--从文件存取json数据

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");

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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