iOS应用中发送HTTP的get请求以及HTTP异步请求的方法
价格网,新婉君,捕风捉影的意思
http get 请求
// 组合一个搜索字符串
nsstring *urlstr = [nsstring stringwithformat:@"http://www.baidu.com/s?wd=%@", @"php"];
// 字符串转化为url
nsurl *url = [nsurl urlwithstring:urlstr];
// nsmutableurlrequest *request = [[nsmutableurlrequest alloc] init];
// [request seturl:url];
// [request sethttpmethod:@"post"];
// [request settimeoutinterval:60];
// [request sethttpbody:_data];
// [request setvalue:@"ttt" forhttpheaderfield:@"cookies"];
// url转化为一个请求
nsurlrequest *request = [nsurlrequest requestwithurl:url];
// 状态请求
nsurlresponse *response;
// 链接一个请求
nsdata *resultdata = [nsurlconnection sendsynchronousrequest:request returningresponse:&response error:nil];
// 返回数据转为字符串
nsdata *datastring = [[nsstring alloc] initwithdata:resultdata encoding:nsutf8stringencoding];
nslog(@"%@", datastring);
// 解析json吧
http异步请求
- (void)viewdidload
{
[super viewdidload];
// do any additional setup after loading the view.
_data = [[nsmutabledata alloc] init];
// 组合一个搜索字符串
nsstring *urlstr = [nsstring stringwithformat:@"http://www.baidu.com/s?wd=%@", @"php"];
nsurl *url = [nsurl urlwithstring:urlstr];
nsurlrequest *request = [nsurlrequest requestwithurl:url];
//发起请求,定义代理
[nsurlconnection connectionwithrequest:request delegate:self];
}
// 分批返回数据
- (void)connection:(nsurlconnection *) connection didreceivedata:(nsdata *)data {
[_data appenddata:data];
nslog(@"%@", _data);
}
// 数据完全返回完毕
- (void)connectiondidfinishloading:(nsurlconnection *)connection {
nsstring *datastring = [[nsstring alloc] initwithdata:_data encoding:nsutf8stringencoding];
nslog(@"%@", datastring);
}
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