我试图发布到php并获得响应。php文件中有一个回显“ hello”，应仅显示问候。我正在尝试测试发布是否正常，但是在我的错误日志中，NSlog没有显示任何内容：
@interface ViewController ()
@end
@implementation ViewController
@synthesize email, password,receivedData;
-(IBAction)Login:(id)sender{
// Create the request.
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://grouporder.site90.net/test.php"]];
// Specify that it will be a POST request
request.HTTPMethod = @"POST";
// This is how we set header fields
[request setValue:@"application/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
// Convert your data and set your request's HTTPBody property
NSString *stringData = [NSString stringWithFormat:@"%@", email];
NSData *requestBodyData = [stringData dataUsingEncoding:NSUTF8StringEncoding];
request.HTTPBody = requestBodyData;
// Create url connection and fire request
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData*)data
{
[receivedData appendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
//initialize convert the received data to string with UTF8 encoding
NSString *htmlSTR = [[NSString alloc] initWithData:receivedData
encoding:NSUTF8StringEncoding];
NSLog(@"%@" , htmlSTR);
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(@"%@" , error);
}
由于您没有提及要使用哪种主体类型，因此本示例向您展示了如何发布multipart / form-data请求。
-(NSString *)generateRandomBoundryString {
CFUUIDRef UUID = CFUUIDCreate(kCFAllocatorDefault);
CFStringRef UUIDString = CFUUIDCreateString(kCFAllocatorDefault,UUID);
NSString *aNSString = (__bridge NSString *)UUIDString;
CFRelease(UUID);
CFRelease(UUIDString);
return aNSString;
}
-(IBAction)Login:(id)sender {
NSString *bndry = [self generateRandomBoundryString];
NSString *contentType = [[NSString alloc] initWithString:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", bndry]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://grouporder.site90.net/test.php"]];
[request setHTTPMethod:@"POST"];
[request setValue: contentType forHTTPHeaderField:@"Content-Type"];
//form-data block
NSMutableData *requestBody = [NSMutableData data];
[requestBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", bndry] dataUsingEncoding:NSUTF8StringEncoding]];
[requestBody appendData:[[NSString stringWithFormat:@"%@=%@", @"name", @"John"] dataUsingEncoding:NSUTF8StringEncoding]];
[requestBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", bndry] dataUsingEncoding:NSUTF8StringEncoding]];
[requestBody appendData:[[NSString stringWithFormat:@"%@=%@", @"password", @"myPassword"] dataUsingEncoding:NSUTF8StringEncoding]];
[requestBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", bndry] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:requestBody];
//form-data block
// NSURLConnection Asynchronous Block
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *rspreportStatus, NSData *datareportStatus, NSError *e)
{
if (e == nil)
{
// If all ok you can processes response data here.
}
else {
NSLog(@"%@", e.localizedDescription);
}
}];
}
如果为body application/x-www-form-urlencoded，则应像这样更改Content-Type值。
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
并用//替换// form-data块。
[requestBody appendData:[[NSString stringWithFormat:@"name=%@&password=%@", @"John", @"myPassword"] dataUsingEncoding:NSUTF8StringEncoding]];
@"John"并且@"myPassword"必须经过URL编码。
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