我正在尝试使用数据库(实际上在我的本地主机)的应用程序,我尝试使用ASIHTTPRequest,但是与iOS 5有太多的麻烦(我学到了如何使用ASIHTTPRequest窗体：
http://www.raywenderlich.com/2965/how-to-write-an-ios-app-that-uses-a-web-service
现在我正在尝试使用Apple提供的API：NSURLRequest / NSURLConnection等,…
我阅读了苹果在线指南并制作了第一个代码：
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view,typically from a nib.
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL
URLWithString:@"http://localhost:8888/testNSURL/index.PHP"]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request setValue:@"Hello world !" forKey:@"myVariable"];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (theConnection) {
receiveData = [NSMutableData data];
}
}
我添加了API所需的代理
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data - (void)connection:(NSURLConnection *)connection - (void)connectionDidFinishLoading:(NSURLConnection *)connection
<?PHP if(isset($_REQUEST["myVariable"])) { echo $_REQUEST["myVariable"]; } else echo '$_REQUEST["myVariable"] not found'; ?>
那么什么错了？当我启动应用程序,它将立即崩溃与此输出：
**
**> 2012-04-09 22:52:16.630 NSURLconnextion[819:f803] *** Terminating app > due to uncaught exception 'NSUnknownKeyException',reason: > '[<NSURLRequest 0x6b32bd0> setValue:forUndefinedKey:]: this class is > not key value coding-compliant for the key myVariable.' > *** First throw call stack: (0x13c8022 0x1559cd6 0x13c7ee1 0x9c0022 0x931f6b 0x931edb 0x2d20 0xd9a1e 0x38401 0x38670 0x38836 0x3f72a > 0x10596 0x11274 0x20183 0x20c38 0x14634 0x12b2ef5 0x139c195 0x1300ff2 > 0x12ff8da 0x12fed84 0x12fec9b 0x10c65 0x12626 0x29dd 0x2945) terminate > called throwing an exception**
**
我猜,这意味着这一行有些错误：
[request setValue:@"Hello world !" forKey:@"myVariable"];
如果我评论这一行,它实际上是有效的.
我的问题是：如何使用NSURLRequest和NSURLConnexion将数据发送到PHP API？
感谢您的帮助.
附：顺便说一句,我对服务器,PHP等的知识差
解决方法
尝试这个：
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL
URLWithString:@"http://localhost:8888/testNSURL/index.PHP"]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request setHTTPMethod:@"POST"];
NSString *postString = @"myVariable=Hello world !";
[request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (theConnection) {
receiveData = [NSMutableData data];
}
