iOS学习之数据解析

//系统提供的解析JSON方法
- (void)handleSystemParser:(UIBarButtonItem *)item {
    //1.获取文件路径
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Student" ofType:@"json"];
    //2.根据文件路径初始化NSData对象
    NSData *data = [NSData dataWithContentsOfFile:filePath];
    //解析
    NSArray *arr = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
    NSLog(@"%@", arr);

}

//第三方类库解析JSON方法(这里使用JSONKit)
- (void)handleThirdPartParser:(UIBarButtonItem *)item {
    
    //将Json格式数据转化为OC对象(NSString对象)


    //1.获取文件路径
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Student" ofType:@"json"];
    
     //2.根据文件路径初始化字符串对象
     NSString *dataStr = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
     //3.解析成OC对象.(可变对象/不可变对象)
     NSArray *arr1 = [dataStr objectFromJSONString];
     NSArray *arr2 = [dataStr mutableObjectFromJSONString];
     NSLog(@"%@",arr1);
     NSLog(@"%@", arr2);

　
    
}

- (void)handleThirdPartParser:(UIBarButtonItem *)item {
    
    //将Json格式数据转化为OC对象(NSData对象)

    //1.获取文件路径
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Student" ofType:@"json"];

     //根据文件路径初始化成NSData对象
     NSData *data = [NSData dataWithContentsOfFile:filePath];
     //解析.(可变/不可变)
     NSArray *arr1 = [data objectFromJSONData];
     NSMutableData *arr2 = [data mutableObjectFromJSONData];

    //将OC对象转成JSON格式数据.

    //1.将OC的数组对象转成JSON格式数据.
    NSArray *arr1 = @[@"aa",@"bb",@"cc",@"dd"];
    NSData *jsonData1 = [arr1 JSONData];//转成JSON格式Data
    NSString *jsonStr1 = [arr1 JSONString]; //转成JSON格式String
    
    //2.将OC的字典对象转成JSON格式数据.
    NSDictionary *dic2 = @{@"name":@"Frank",
                           @"age":@"18"
                           };
    NSData *jsonData2 = [dic2 JSONData];//转成JSON格式Data
    NSString *jsonStr2 = [dic2 JSONString];//转成JSON格式String