Question

我正在尝试按照Insert imagedata into MySQL database from XCode using PHP & JSON的答案将我的应用中的照片发送到MySQL数据库，但我对如何添加NSString ID以引用POST感到困惑身体。

我们有以下内容来创建获取图像数据的主体：

        NSMutableData *body = [NSMutableData data];

        [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"imagename.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[NSData dataWithData:imageData]];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

        // setting the body of the post to the reqeust
        [request setHTTPBody:body];

如何在同一帖子中发送文字ID等附加信息？

Answer 1

以下是与Imagedata和字符串一起发布数据的完整代码。

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
    [request setHTTPMethod:@"POST"];

    NSString *boundary = @"---------------------------14737809831466499882746641449";
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

    NSMutableData *body = [NSMutableData data];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"imagename.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[NSData dataWithData:imageData]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [request setHTTPBody:body];

    NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
    [dict setObject:@"<YOUR TEXT>" forKey:@"<KEY>"];

    [body appendData:[self createFormData:dict withBoundary:boundary]];
    [request setHTTPBody:body];

    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
    NSLog(@"%@", returnString);


- (NSData*)createFormData:(NSDictionary*)myDictionary withBoundary:(NSString*)myBounds
{
    NSMutableData *myReturn = [[NSMutableData alloc] init];
    NSArray *formKeys = [myDictionary allKeys];
    for (int i = 0; i < [formKeys count]; i++) {
        [myReturn appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",myBounds] dataUsingEncoding:NSASCIIStringEncoding]];
        [myReturn appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n%@",[formKeys objectAtIndex:i],[myDictionary valueForKey:[formKeys objectAtIndex:i]]] dataUsingEncoding:NSASCIIStringEncoding]];
    }
    return myReturn;
}

Answer 2

我认为你要找的是setValue：forHTTPHeaderField：

armv6l

在同一POST中发送NSData和NSString

2 个答案: