JSON数据解析步骤及封装

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

//2.JSON-->data(二进制数)
NSData *jsonData = [NSData dataWithContentsOfFile:path];

//3.解析数据,返回类型看JSON文件结构(id只是举例)
id data= [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];

//
//  DataService.h
//  WXMovie
//
//  Created by bing on 16/7/22.
//  Copyright © 2016年 bing. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface DataService : NSObject

+(id)loadDataWithListName:(NSString*)listName;

@end

//
//  DataService.m
//  WXMovie
//
//  Created by bing on 16/7/22.
//  Copyright © 2016年 bing. All rights reserved.
//

#import "DataService.h"

@implementation DataService

+(id)loadDataWithListName:(NSString*)listName{

NSString *path = [[NSBundle mainBundle]pathForResource:listName ofType:@"json"];
NSData *jsonData = [NSData dataWithContentsOfFile:path];
id data= [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];
return data;

}
@end

NSDictionary * data = [DataService loadDataWithListName:@"top250"];