iOS http request sample code

转自：http://hi.baidu.com/leonqgl/blog/item/cee6e3d3c2762b163af3cfeb.html

http://blog.163.com/kongshuai1234@126/blog/static/1103669952010615935072/ NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; NSUserDefaults *defs = [NSUserDefaults standardUserDefaults]; NSLog(@"Load currentCookie:%@", cookie); [request setValue:cookie forHTTPHeaderField:@"Cookie"]; [request setURL:[a objectAtIndex:0]]; [request setHTTPMethod:@"GET"]; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; [request release];   一、iPhone终端代码： （同步请求） NSString *post = nil;   post = [[NSString alloc] initWithFormat:@"message=%@",@"hello,world."]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];   NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];   NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];   [request setURL:[NSURL URLWithString:@"http://192.168.10.220:18080/data/1.jsp"]];   [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"];   [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];   [request setHTTPBody:postData];   //[NSURLConnection connectionWithRequest:request delegate:self ];   //同步请求的的代码 //returnData就是返回得到的数据 NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningRequest:nil error:nil]; [post release]; 二、web服务器端代码 <% String message = request.getParameter("message"); System.out.println("message="+message); out.println("message="+message); %> 采用json 格式post 字符串 static NSString *urlString = @"http://192.168.1.103/WebAccess/admin/tablesSync.aspx"; //static NSString *urlString = @"http://www.google.cn"; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:urlString]]; NSString *httpBodyString = @"a test string"; NSMutableArray *arrayData = [[NSMutableArray alloc] init]； NSMutableDictionary *dlist = [[NSMutableDictionary alloc] init]; [dlist setObject:@"tblArea" forKey:@"tableName"]; [dlist setObject:@"2009-10-24 11:20:00" forKey:@"lastChangeDate"]; [arrayData addObject:dlist]; //[request setHTTPBody:[httpBodyString dataUsingEncoding:NSUTF8StringEncoding]]; // //post = [[NSString alloc] initWithFormat:@"message=%@",@"hello,world."]; httpBodyString = [arrayData JSONRepresentation]; NSData *postData = [httpBodyString dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; [request setHTTPBody:postData]; [request setHTTPMethod:@"POST"]; // NSURLResponse *reponse; NSError *error = nil; // NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&reponse error:&error]; if (error) { NSLog(@"Something wrong: %@",[error description]); }else { if (responseData) { NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; NSLog(@"get %@",responseString); } } NSMutableDictionary *dgetData = [responseString JSONValue]; NSLog(@"dgetData: %@" , [dgetData description]); [dlist release]; [arrayData release];