Question

ios开发 怎么发送post请求

Answer 1

NSURL *url = [NSURL URLWithString:urlStr];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:15];

[request setHTTPMethod:@"POST"];

NSString *parametersStr = [self getPostStr:parameters];//eg :@"city=sz&name=jack"

NSData *data = [parametersStr dataUsingEncoding:NSUTF8StringEncoding];

[request setHTTPBody:data];
////////////
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];

[connection start];
/////////
各种connection回调。。。。
就不详细说明了
#pragma mark - 网络请求回调

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response

{

self.mTempData = [[NSMutableData alloc]initWithCapacity:10];

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

[self.mTempData appendData:data];

}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

{

self.recievedData = self.mTempData;

NSString *jsonString = [[NSString alloc]initWithData:self.recievedData encoding:NSUTF8StringEncoding];

NSLog(@"HttpCallBack_connectionRecieved Data:%@",jsonString);

//将字符串写到缓冲区。

NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];

//解析json数据，使用系统方法 JSONObjectWithData: options: error:

NSDictionary* dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSUTF8StringEncoding error:nil];

if ([_target respondsToSelector:@selector(HttpConnectionCallback:path:)]) {

dispatch_async(dispatch_get_main_queue(), ^{

[_target HttpConnectionCallback:dic path:_path];

});

}

}

//failure

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

{

if ([_target respondsToSelector:@selector(HttpConnectionFailed:path:)]) {

dispatch_async(dispatch_get_main_queue(), ^{

[_target HttpConnectionFailed:error path:_path];

});

}

}