//生成json文件
- (void)onjson
{
// 如果数组或者字典中存储了 NSString, NSNumber, NSArray, NSDictionary, or NSNull 之外的其他对象,就不能直接保存成文件了.也不能序列化成 JSON 数据.
NSDictionary *dict = @{@"name" : @"me", @"do" : @"something", @"with" : @"her", @"address" : @"home"};
// 1.判断当前对象是否能够转换成JSON数据.
// YES if obj can be converted to JSON data, otherwise NO
BOOL isYes = [NSJSONSerialization isValidJSONObject:dict];
if (isYes) {
NSLog(@"可以转换");
/* JSON data for obj, or nil if an internal error occurs. The resulting data is a encoded in UTF-8.
*/
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:0 error:NULL];
/*
Writes the bytes in the receiver to the file specified by a given path.
YES if the operation succeeds, otherwise NO
*/
// 将JSON数据写成文件
// 文件添加后缀名: 告诉别人当前文件的类型.
// 注意: AFN是通过文件类型来确定数据类型的!如果不添加类型,有可能识别不了! 自己最好添加文件类型.
// [jsonData writeToFile:@"/Users/xyios/Desktop/dict.json" atomically:YES];
//存入NSDocumentDirectory
NSString *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
//创建文件夹
NSString *patientPhotoFolder = [path stringByAppendingPathComponent:@"abdd"];
NSFileManager *fileManager = [[NSFileManager alloc] init];
[fileManager createDirectoryAtPath:patientPhotoFolder
withIntermediateDirectories:NO
attributes:nil
error:nil];
//储存文件名称+格式
NSString *savePath = [patientPhotoFolder stringByAppendingPathComponent:@"Desopdict.json"];
NSLog(@"savePath is SY:%@",savePath);
[jsonData writeToFile:savePath atomically:YES];
NSLog(@"%@", [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]);
} else {
NSLog(@"JSON数据生成失败，请检查数据格式");
}
}