json解析

    NSString *filePath = [[NSBundle mainBundle]pathForResource:@"students" ofType:@"json"];
    NSError *error = nil;
    NSData *data = [NSData dataWithContentsOfFile:filePath options:NSDataReadingMappedIfSafe error:&error];
    
    NSArray *tmpArr = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
    self.students = [NSMutableArray new];
    Student *student = nil;
    for (NSDictionary *stu in tmpArr) {
        student = [Student new];
        student.name = stu[@"name"];
        student.age = [stu[@"age"]integerValue];
        student.gender = stu[@"gender"];
        student.remark = stu[@"remark"];
        [self.students addObject:student];
    }
    NSLog(@"%@", self.students);

ios5之后才有