JSON序列化

来源：互联网发布：京东618和双11数据编辑：程序博客网时间：2024/06/07 16:00

// ViewController.m

// 09-JSON序列化

// Created by Apple on 15/10/23.

#import "ViewController.h"

#import "HMVideo.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

//1 自己拼json形式的字符串，比较困难

// NSString *jsonStr = @"{\"name\":\"zhangsan\",\"age\":18}";

// [self postJSON:[jsonStr dataUsingEncoding:NSUTF8StringEncoding]];

//2 字典

// NSDictionary *dic = @{@"name":@"zhangsan",@"age":@(18)};

// //JSON序列化

// NSData *data = [NSJSONSerialization dataWithJSONObject:dic options:0 error:NULL];

// [self postJSON:data];

//3 数组

// NSArray *array = @[

// @{@"name":@"zhangsan",@"age":@(18)},

// @{@"name":@"lisi",@"age":@(19)}

// ];

// //JSON序列化

// NSData *data = [NSJSONSerialization dataWithJSONObject:array options:0 error:NULL];

// [self postJSON:data];

//4 自定义对象进行JSON序列化

// HMVideo *v1 = [[HMVideo alloc] init];

// v1.videoName = @"ll-001.avi";

// v1.size = 500;

// v1.author = @"lilei";

// //KVC给对象内部的成员变量赋值

// [v1 setValue:@(NO) forKey:@"_isYellow"];

//// NSLog(@"%@",v1);

// //自定义对象不能进行JSON序列化，必须先把自定义对象转换成字典或数组

//// if (![NSJSONSerialization isValidJSONObject:v1]) {

//// NSLog(@"sorry，对象不能进行json序列化");

//// return;

//// }

// //把自定义对象转换成字典 KVC

// NSDictionary *dic = [v1 dictionaryWithValuesForKeys:@[@"videoName",@"size",@"author",@"_isYellow"]];

// NSData *data = [NSJSONSerialization dataWithJSONObject:dic options:0 error:NULL];

// [self postJSON:data];

//5 把自定义对象的数组进行JSON序列化

HMVideo *v1 = [[HMVideo alloc] init];

v1.videoName = @"ll-001.avi";

v1.size = 500;

v1.author = @"lilei";

//KVC给对象内部的成员变量赋值

[v1 setValue:@(YES) forKey:@"_isYellow"];

HMVideo *v2 = [[HMVideo alloc] init];

v2.videoName = @"hmm-001.avi";

v2.size = 500;

v2.author = @"韩梅梅";

//KVC给对象内部的成员变量赋值

[v2 setValue:@(NO) forKey:@"_isYellow"];

NSArray *array = @[v1,v2];

// if (![NSJSONSerialization isValidJSONObject:array]) {

// NSLog(@"sorry,不能进行JSON序列化");

// return;

// }

//把自定义对象的数组，所有的对象都转换成字典

NSMutableArray *mArray = [NSMutableArray arrayWithCapacity:2];

for (HMVideo *video in array) {

NSDictionary *dic = [video dictionaryWithValuesForKeys:@[@"videoName",@"size",@"author",@"_isYellow"]];

[mArray addObject:dic];

}

NSData *data = [NSJSONSerialization dataWithJSONObject:mArray options:0 error:NULL];

[self postJSON:data];

}

- (void)postJSON:(NSData *)data {

NSURL *url = [NSURL URLWithString:@"http://127.0.0.1/php/upload/postjson.php"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

//设置post

request.HTTPMethod = @"post";

request.HTTPBody = data;

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *_Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {

if (connectionError) {

NSLog(@"连接错误 %@",connectionError);

return;

}

NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;

if (httpResponse.statusCode == 200 || httpResponse.statusCode == 304) {

//解析数据

NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

NSLog(@"%@",str);

}else{

NSLog(@"服务器内部错误");

}

}];

}

@end

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