iOS开发中常见的网络数据解析

本人就iOS开发中常见的网络数据解析方式以及使用情况做了汇总，希望阅读者能够从中受益.....
为了便于分析，本人就直接搞了一个新闻接口 通过解析并输出其中数据来确保操作正确性，好了 闲话不多说了，咱们就直接进入正题。

一、准备操作

首先我们修改工程的Info.plist文件 //xcode 7 之后若想要使用HTTP 需要修改info.plist文件 这一点大家看图就会明白

继而

@interface ViewController ()//三个代理这里选中DataDelegate
@property(nonatomic,strong)NSMutableArray *dataArray;//存放解析完成数据的数组
//定以一个可变data 数据
@property(nonatomic,strong)NSMutableData *tempData;
@end



//新闻接口
#define BASE_URL @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"
//将上面的字符串分段为以 ？ 为分界线分为两部分
#define URL_POST1 @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx"
#define URL_POST2 @"date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"

//懒加载初始化数组
-(NSMutableArray *)dataArray{
   if (_dataArray == nil) {
       _dataArray  =[NSMutableArray array];
   }
   return _dataArray;
}

二、网络数据解析方式和用法

1、Get同步解析

- (IBAction)getTongbu:(UIButton *)sender {
    NSLog(@"=============Get同步");
    //创建url对象
    NSURL *url = [NSURL URLWithString:BASE_URL];
    //创建请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    //设置请求方式 这一步可以不写 默认设置为get请求
    [request setHTTPMethod:@"get"];
    //创建相应对象
    NSURLResponse *response = nil;
    NSError *error;
    //创建连接对象
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
    NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
//    NSLog(@"%@",dict);
    NSArray *array =dict[@"news"];
    for (NSDictionary *dic in array) {
        NewsModel *model =[NewsModel new];
        [model setValuesForKeysWithDictionary:dic];
        [self.dataArray addObject:model];
    }
    for (NewsModel *model in _dataArray) {
        NSLog(@"%@",model);
    }
}

2、Post同步解析

- (IBAction)postTongbu:(UIButton *)sender {
    NSLog(@"=============Post同步");
    //创建url对象
    NSURL *url = [NSURL URLWithString:URL_POST1];
    //创建请求对象
    NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:url];
    
//设置请求方式
    [request setHTTPMethod:@"post"];//get可以进行省略 但是post不能省略
    //设置请求参数
    NSData *tempData =[URL_POST2 dataUsingEncoding:NSUTF8StringEncoding];
    [request setHTTPBody:tempData];
    //创建响应对象
    NSURLResponse *responde = nil;
    //创建连接对象
    NSError *error;
    NSData *data  = [NSURLConnection sendSynchronousRequest:request returningResponse: &responde error:&error];
    NSDictionary *dict =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
    NSArray *arary =dict[@"news"];
    for (NSDictionary *dic in arary) {
        NewsModel *model =[NewsModel new];
        [model setValuesForKeysWithDictionary:dic];
        [self.dataArray addObject:model];
    }
    for (NewsModel *model in _dataArray) {
        NSLog(@"%@",model);
    }
}

3、Get异步Block

- (IBAction)getYiBlock:(id)sender {
    NSLog(@"=============Get异步Block");
    NSURL *url =[NSURL URLWithString:BASE_URL];
    NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:url];
    [request setHTTPMethod:@"get"];
    
    __weak typeof(self)temp = self;
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
        NSError *error;
        NSDictionary *dict =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
        NSArray *array =dict[@"news"];
        for (NSDictionary *dic in array) {
            NewsModel *model = [NewsModel new];
            [model setValuesForKeysWithDictionary:dic];
            [temp.dataArray addObject:model];
        }
        for (NewsModel *model in temp.dataArray) {
            NSLog(@"%@",model);
        }
    }];
}

4、Post异步Block

- (IBAction)postYoBlock:(id)sender {
    NSLog(@"=============Post异步Block同步");
    NSURL *url = [NSURL URLWithString:URL_POST1];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    NSURLResponse *responde = nil;
    [request setHTTPMethod:@"post"];
    NSData *tempData = [URL_POST2 dataUsingEncoding:NSUTF8StringEncoding];
    [request setHTTPBody:tempData];
    __weak typeof(self)temp =self;
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
        NSError *error;
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
        NSArray *array = dict[@"news"];
        for (NSDictionary *dic in array) {
            NewsModel *model =[NewsModel new];
            [model setValuesForKeysWithDictionary:dic];
            [temp.dataArray addObject:model];
        }
        for (NewsModel *model in temp.dataArray) {
            NSLog(@"%@",model);
        }
    }];
}

除以上之外，还有Get的Delegate方式请求和Post的Delegate方式请求，这两种方式都需要遵守 NSURLConnectionDataDelegate协议，并实现协议里面的几个方法才能进行数据操作的实现 ，以下两种方式的实现都是在此基础上进行的

5、Get异步Delegate

- (IBAction)getYiDelegate:(UIButton *)sender {
    NSLog(@"Get异步请求代理");
    //创建url对象
    NSURL *url =[NSURL URLWithString:BASE_URL];
    
    //创建请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    
    //创建连接对象并实现代理
    NSURLConnection *connection =[NSURLConnection connectionWithRequest:request delegate:self];
    
    //开始执行
    [connection start];
}

6、Post异步Delegate

- (IBAction)postYiDelegate:(id)sender {
    NSLog(@"Post异步请求代理");
    NSURL *url  =[NSURL URLWithString:URL_POST1];
    
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setHTTPMethod:@"post"];
    
    NSData *tempData =[URL_POST2 dataUsingEncoding:NSUTF8StringEncoding];
    [request setHTTPBody:tempData];
    
    NSURLConnection *connection =[NSURLConnection connectionWithRequest:request delegate:self];
    [connection start];
}

NSURLConnectionDataDelegate方法的实现

//接收到服务器响应的时候出发的方法
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
    //准备数据接收 先进行数据初始化
    self.tempData =[NSMutableData data];
}
//接收请求的数据
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    //将每次接收到的数据拼接到原有数据包的后面
    [_tempData appendData:data];
}
//数据加载完毕 开始解析
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
    NSError *error;
    NSDictionary *dict =[NSJSONSerialization JSONObjectWithData:_tempData options:NSJSONReadingAllowFragments error:&error];
    NSArray *array =dict[@"news"];
    for (NSDictionary *dic in array) {
        NewsModel *model =[NewsModel new];

        [model setValuesForKeysWithDictionary:dic];
        [self.dataArray addObject:model];
    }
    for (NewsModel *model in _dataArray) {
        NSLog(@"%@",model);
    }
}
//打印失败信息
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
    NSLog(@"文件连接出现了error = %@",error);
}

7、Get Session异步请求

- (IBAction)getSession:(UIButton *)sender {
//准备url对象
    NSURL *url =[NSURL URLWithString:BASE_URL]；
    //创建session对象
    NSURLSession *session =[NSURLSession sharedSession];
    __weak typeof(self)temp =self;
    //创建task（该方法内部默认使用get）直接进行传递url即可
    NSURLSessionDataTask *dataTask =[session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        
         temp.dataArray = [NSMutableArray arrayWithCapacity:1];
        //数据操作
        NSDictionary *dic =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
        NSArray *array =dic[@"news"];
        for (NSDictionary *dict in array) {
            NewsModel *model = [NewsModel new];
            [model setValuesForKeysWithDictionary:dict];
            [temp.dataArray addObject:model];
        }
    }];
    //数据操作
    [dataTask resume];
    for (NewsModel *model in _dataArray) {
        NSLog(@"%@",model);
    }
}

8、Post Session异步请求

- (IBAction)postSession:(UIButton *)sender {
    NSLog(@"postSession-异步请求");
    //创建URL对象
    NSURL *url =[NSURL URLWithString:URL_POST1];
    //创建请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setHTTPMethod:@"post"];
    NSData *tempdata = [URL_POST2 dataUsingEncoding:NSUTF8StringEncoding];
    [request setHTTPBody:tempdata];
    // 3 建立会话 session支持三种类型的任务
    
    //    NSURLSessionDataTask  //加载数据
    //    NSURLSessionDownloadTask  //下载
    //    NSURLSessionUploadTask   //上传
    NSURLSession *session =[NSURLSession sharedSession];
//    NSLog(@"%d",[[NSThread currentThread] isMainThread]);
    
    __weak typeof(self)temp = self;
    
    NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        //解析
        _dataArray = [NSMutableArray arrayWithCapacity:1];
        NSDictionary *dic =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
        NSArray *array =dic[@"news"];
        for (NSDictionary *dict in array) {
            NewsModel *model = [NewsModel new];
            [model setValuesForKeysWithDictionary:dict];
            [_dataArray addObject:model];
        }
//        NSLog(@"%@",dic);
//        NSLog(@"%d----",[[NSThread currentThread] isMainThread]);
        //回到主线程 刷新数据 要是刷新就在这里面
        dispatch_async(dispatch_get_main_queue(), ^{
//            [temp.tableView reloadData];
            for (NewsModel *model in _dataArray) {
                NSLog(@"%@",model);
            }
        });
    }];
    //启动任务
    [dataTask resume];
}

好了，以上就是这篇文章的所有内容，笔者在此表示感谢~~~~~