ios基础篇（二十七）—— Json解析

//
//  ViewController.m
//  NSJSONSerialization
//
//  Created by Oran Wu on 16-1-5.
//  Copyright (c) 2016年 MO. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    [self sample];
}

- (void)sample{
    NSError *error;
    //获取json文件路径，根据路径来获取里面的数据
    NSString *path = [[NSBundle mainBundle] pathForResource:@"Json" ofType:@"txt"];
    NSString *contents = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&error];
    if (!error) {
        //将请求的数据放到NSData对象中
        NSData *data = [contents dataUsingEncoding:NSUTF8StringEncoding];
        //解析服务端返回的json格式数据
        id jsonObjet = [NSJSONSerialization JSONObjectWithData:data
                                                       options:NSJSONReadingAllowFragments
                                                         error:&error];
        
//        typedef NS_OPTIONS(NSUInteger, NSJSONReadingOptions) {
//            //将解析的数组和字典设置为可变对象
//            NSJSONReadingMutableContainers = (1UL << 0),
//            //将解析数据的子节点创建为可变字符串对象
//            NSJSONReadingMutableLeaves = (1UL << 1),
//            //允许解析对象的最上层不是字典或者数组
//            NSJSONReadingAllowFragments = (1UL << 2)
//       }
        
        NSLog(@"jsonObjet:%@",jsonObjet);
        //根据得到的键值对通过key来得到对应的值，也就是值里面的数组
        NSArray *byName = [jsonObjet objectForKey:@"ByName"];
        
        for (int i = 0; i < byName.count; i++){
            //获取数组中的键值对
            NSString *name = [byName objectAtIndex:i];
            NSLog(@"name:%@",name);
        }
        
        NSDictionary *education = [jsonObjet objectForKey:@"Education"];
        NSLog(@"Education:%@",education);
        
        NSString *gradeSchool = [education objectForKey:@"GradeSchool"];
        NSLog(@"GradeSchool:%@",gradeSchool);
        
        NSArray *middleSchool = [education objectForKey:@"MiddleSchool"];
        
        for (int i = 0; i < middleSchool.count; i++) {
            NSString *middle = [middleSchool objectAtIndex:i];
            NSLog(@"MiddleSchool:%@",middle);
        }
        
        NSDictionary *university = [education objectForKey:@"University"];
        NSLog(@"University:%@",university);
        
        NSString *name = [university objectForKey:@"Name"];
        NSLog(@"Name:%@",name);
        
        NSArray *specialty = [university objectForKey:@"Specialty"];
        
        for (int i = 0; i < specialty.count; i++) {
            NSString *spec = [specialty objectAtIndex:i];
             NSLog(@"Specialty:%@",spec);
        }
        
        NSString *Name = [jsonObjet objectForKey:@"Name"];
        NSLog(@"Name:%@",Name);
    }
}