Question

我正在使用以下代码将图片上传到php服务器，但显示IOException消息可以帮助我吗？

- (void)uploadFileToURL:(NSURL *)url FileData:(NSData *)fileData FileParameterName:(NSString *)fileParameterName FileName:(NSString *)fileName withParameters:(NSDictionary *)parameters
{
    NSMutableString *params = nil;
    NSURL *finalURL = url;
    if (parameters != nil)
    {
        params = [[NSMutableString alloc] init];
        for (id key in parameters)
        {
            NSString *encodedKey = [key stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
            CFStringRef value = (CFStringRef)[[parameters objectForKey:key] copy];
            // Escape even the "reserved" characters for URLs 
            // as defined in http://www.ietf.org/rfc/rfc2396.txt
            CFStringRef encodedValue = CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, 
                                                                               value,
                                                                               NULL, 
                                                                               (CFStringRef)@";/?:@&=+$,", 
                                                                               kCFStringEncodingUTF8);
            [params appendFormat:@"%@=%@&", encodedKey, encodedValue];
            CFRelease(value);
            CFRelease(encodedValue);
        }
        [params deleteCharactersInRange:NSMakeRange([params length] - 1, 1)];
            NSString *urlWithParams = [[url absoluteString] stringByAppendingFormat:@"?%@", params];
            finalURL = [NSURL URLWithString:urlWithParams];
        }
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:finalURL
                                                           cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                       timeoutInterval:60.0];
    NSString *boundary = @"---------------------------14737809831466499882746641449";
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];
    NSMutableData *postbody = [NSMutableData data];
    [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.jpg\"\r\n", fileName] dataUsingEncoding:NSUTF8StringEncoding]];
    [postbody appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postbody appendData:[NSData dataWithData:fileData]];
    [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    [request setHTTPBody:postbody];
    [request setHTTPMethod:@"POST"];
    [self startConnection:request];
}

Answer 1

您是否尝试从模拟器浏览器中启动的网页发布到该网址？您提供的代码似乎是正确的。我怀疑服务器连接。

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