請閱讀此代碼...在你讀完這段代碼ü知道「如何使用連接柱」 ......指上傳到圖片post連接並使用代理方法
-(void) sendImageToServer
{
NSURL *postURL = [NSURL URLWithString:[NSString stringWithFormat:@"@"http://192.168.10.30:8080/thek_save/JSP/file_upload.jsp";]];
NSMutableURLRequest *postRequest = [NSMutableURLRequest requestWithURL:postURL
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:30.0];
// change type to POST (default is GET)
[postRequest setHTTPMethod:@"POST"];
NSMutableData *postBody = [NSMutableData data];
// just some random text that will never occur in the body
NSString *stringBoundary = @"0xKhTmLbOuNdArY---This_Is_ThE_BoUnDaRyy---pqo";
// header value
NSString *headerBoundary = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];
// set header
[postRequest addValue:headerBoundary forHTTPHeaderField:@"Content-Type"];
// image ------------
[postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[@"Content-Disposition: form-data; name=\"image\"; filename=\"image.png\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[@"Content-Type: image/png\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[@"Content-Transfer-Encoding: binary\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// add it to body
NSData *data = UIImageJPEGRepresentation(img, 90);
[postBody appendData:data];
[postBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
/// UIImage *testImage = [UIImage imageWithData:data];
// final boundary
[postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
// add body to post
[postRequest setHTTPBody:postBody];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:postRequest delegate:self];
if(theConnection)
{
webData = [NSMutableData data] ;
}
else
{
NSLog(@"theConnection is NULL");
}
}
///Use Delegete
#pragma mark -
#pragma mark ConnectionDelegate
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(@"ERROR with theConenction");
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"DONE. Received Bytes: %d", [webData length]);
NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
NSLog(@"%@",theXML);
}