2021-06-20

网络请求的两种方式：GET 和 POST

1.普通封装方法：封装到一个类中

1、自定义一个block

typedefvoid (^DataBlock) (id data);

2、自定义GET 、POST方法

+ (void)getDataByURLString:(NSString *)urlString WithDataBlock:(DataBlock)dataBlock;

+ (void)getDataByURLString:(NSString *)urlString HttpMethod:(NSString *)method BodyString:(NSString *)bodyString DataBlock:(DataBlock)datablock;

3、实现GET、POST方法

+ (void)getDataByURLString:(NSString *)urlString WithDataBlock:( DataBlock)dataBlock{

NSURL *url = [NSURL URLWithString:urlString];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

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

dataBlock(data);

}];

}

+ (void)getDataByURLString:(NSString *)urlString HttpMethod:(NSString *)method BodyString:(NSString *)bodyString DataBlock:(DataBlock)datablock{

urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSURL *url = [NSURL URLWithString:urlString];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

//默认是get方法，修改成post

if ([method isEqual:@"POST"]) {

[request setHTTPMethod:method];

NSData *bodyData = [bodyString dataUsingEncoding:NSUTF8StringEncoding];

[request setHTTPBody:bodyData];

}

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

datablock(data);

}];

}

在ViewController中直接调用类(+)方法：

get请求：

[HttpMethod getDataByURLString:@"http://c.3g.163.com/nc/article/headline/T1348647853363/0-140.html" WithDataBlock:^(id data) {

NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

NSLog(@"%@", dic); //此处就可以对数据进行具体解析

}];

post请求：

[HttpMethod getDataByURLString:@"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx" HttpMethod:@"POST" BodyString:@"date=20131129&startRecord=1&len=30&udid=1234567890&terminalType=Iphone&cid=213" DataBlock:^(id data) {

NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options: NSJSONReadingMutableContainers error:n