ios本地文件读取，json解析YYModel

    //获取当前工程下指定文件路径，AppConfig.json文件

    NSString *filePath
= [[NSBundlemainBundle]pathForResource:@"AppConfig"ofType:@"json"];

//获取绝对路径下的指定文件内容：

NSString *path = @"/Users/gx/Desktop/test_utf8.txt";
//NSString *str = [NSString stringWithContentsOfFile:path];
//UTF-8编码
NSString *str = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
NSLog(@"%@",str);

//GBK编码
NSString *path2 = @"/Users/gx/Desktop/test_gbk.txt";
NSString *str2 = [NSString stringWithContentsOfFile:path2 encoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000) error:nil];
NSLog(@"%@",str2);

//使用NSURL从文件中读取字符串
NSURL *url = [NSURL URLWithString:@"file:///Users/gx/Desktop/test_utf8.txt"];
NSString *str3 = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
NSLog(@"%@",str3);

//使用NSURL读取远程文本
NSURL *url2 = [NSURL URLWithString:@"http://www.baidu.com"];
NSString *str4 = [NSString stringWithContentsOfURL:url2 encoding:NSUTF8StringEncoding error:nil];
NSLog(@"%@",str4);

本地json解析

json文件{
"PracticeID": "{c5068d68-890c-444f-8dcc-2c10ceffc721}",
"AreaID": "RP1",
"Points": [
{
"Index": 1,
"x": 193.2760009765625,
"y": 24.34600067138672,
"z": 0,
"carDir": 93.69000244140625,
"ErrMsg": ""
},
{
"Index": 2,
"x": 193.2760009765625,
"y": 24.34600067138672,
"z": 0,
"carDir": 93.69000244140625,
"ErrMsg": ""
},
{
"Index": 3,
"x": 193.2760009765625,
"y": 24.34600067138672,
"z": 0,
"carDir": 93.69000244140625,
"ErrMsg": ""
}
]
}
类1定义

#import <Foundation/Foundation.h>

@interface PointNode : NSObject
@property UInt64 index;
@property long uid;
@property float x;
@property float y;
@property float z;
@property float carDir;
@property NSString* errMsg;

-(void)initData;
-(void)showLog;
@end

#import "PointNode.h"

@implementation PointNode

-(void)initData
{
NSLog(@"111");
//    NSString* filepath =@"mapData.json";

//    NSLog(content);

}

-(void)showLog
{
NSLog(@"%i",_uid);
}

@end

类2定义:
#import <Foundation/Foundation.h>

@interface PathData : NSObject
@property NSString* PracticeID;
@property NSString* AreaID;
@property NSArray* Points;

@end

#import "PathData.h"

@implementation PathData

@end

YYModel解析

NSString* testJson=@"{\"uid\":1001}";
NSData* stringData = [testJson dataUsingEncoding:NSUTF8StringEncoding];
id jsonid = [NSJSONSerialization JSONObjectWithData:stringData options:0 error:nil];
PointNode* user= [PointNode yy_modelWithJSON:jsonid];
[user showLog];
// NSLog(@"%@",user);

NSString* filepath = [[NSBundle mainBundle]pathForResource:@"paths/pathData" ofType:@"json"];
NSString* content = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:nil];
NSData* stringData2 = [content dataUsingEncoding:NSUTF8StringEncoding];
id jsonid2 = [NSJSONSerialization JSONObjectWithData:stringData2 options:0 error:nil];
PathData* user2= [PathData yy_modelWithJSON:jsonid2];