Ios 将图像作为二进制文件发送到服务器

下面是我将图像发送到服务器以获取图像信息的属性

    NSDictionary* parameters = [NSDictionary dictionaryWithObjectsAndKeys:@"en_US", @"image_request[locale]", @"en", @"image_request[language]",[NSURL URLWithString:@"<file url>"], @"image_request[image]", nil];

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但参数要求我提供url。是否有任何方法，只要我抓拍一张照片并将其上传到服务器，并获取该url并将其附加到参数或任何可找到的备选方案中。我使用Unirest http库发送请求。

以便使用Unirest，您需要先对图像进行相同处理

// Get the path to the Documents folder
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectoryPath = [paths objectAtIndex:0];

// Get the path to an file named "tmp_image.jpg" in the Documents folder
NSString *imagePath = [documentDirectoryPath stringByAppendingPathComponent:@"tmp_image.jpg"];
NSURL *imageURL = [NSURL fileURLWithPath:imagePath];

// Write the image to an file called "tmp_image.jpg" in the Documents folder
NSData *imageData = UIImageJPEGRepresentation(image, 1.0);
[imageData writeToURL:imageURL atomically:YES];

// Now construct the parameters that will be passed to Unirest
NSDictionary* parameters = [NSDictionary dictionaryWithObjectsAndKeys:@"en_US", @"image_request[locale]", @"en", @"image_request[language]", imageURL, @"image_request[image]", nil];

// And the headers
NSDictionary* headers = [NSDictionary dictionaryWithObjectsAndKeys:@"<mashape-key>", @"X-Mashape-Authorization", nil];

// Call the API using Unirest
HttpJsonResponse* response = [[Unirest post:^(BodyRequest* request) {
    [request setUrl:@"https://camfind.p.mashape.com/image_requests"];
    [request setHeaders:headers];
    [request setParameters:parameters];
}] asJson];

//获取文档文件夹的路径
NSArray*Path=NSSearchPathForDirectoriesInDomains（NSDocumentDirectory，NSUserDomainMask，是）；
NSString*documentDirectoryPath=[paths objectAtIndex:0]；
//获取文档文件夹中名为“tmp_image.jpg”的文件的路径
NSString*imagePath=[documentDirectoryPath stringByAppendingPathComponent:@“tmp_image.jpg]”；
NSURL*imageURL=[NSURL fileURLWithPath:imagePath]；
//将图像写入Documents文件夹中名为“tmp_image.jpg”的文件
NSData*imageData=UIImageJPEG表示法（图像，1.0）；
[imageData writeToURL:imageURL原子性：是]；
//现在构造将传递给Unirest的参数
NSDictionary*参数=[NSDictionary Dictionary WithObjectsSandKeys:@“en_-US”，“image_请求[locale]，@“en”，“image_请求[language]”，imageURL，@“image_请求[image]”，nil]；
//标题呢
NSDictionary*headers=[NSDictionary Dictionary WithObjectsSandKeys:@“”@“X-Mashape-Authorization”，无]；
//使用Unirest调用API
HttpJsonResponse*response=[[Unirest post:^（BodyRequest*request）{
[请求设置URL:@”https://camfind.p.mashape.com/image_requests"];
[请求集标题：标题]；
[请求设置参数：参数]；
}]asJson]；

您的问题不是很清楚。你说服务器要求你上传一个二进制图像，然后你说服务器需要一个图像URL。这是哪一个？如果您转到此属性，则该属性需要NSURL，但端点描述显示为二进制。我将尝试此操作。但我尝试使用BodyRequest，而不是HttpJsonResponse响应=[[Unirest postEntity:^（MultipartRequest request）]；区别是什么？从哪里可以获得更多Unirest库的示例？如何使用UnirestJsonNode*json=[response body]打印json输出；NSLog（@“Answer=%@”，json）；输出-答案=。。如何使用大括号获取json输出..这应该是一个单独的问题，而不是注释。

// Get the path to the Documents folder
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectoryPath = [paths objectAtIndex:0];

// Get the path to an file named "tmp_image.jpg" in the Documents folder
NSString *imagePath = [documentDirectoryPath stringByAppendingPathComponent:@"tmp_image.jpg"];
NSURL *imageURL = [NSURL fileURLWithPath:imagePath];

// Write the image to an file called "tmp_image.jpg" in the Documents folder
NSData *imageData = UIImageJPEGRepresentation(image, 1.0);
[imageData writeToURL:imageURL atomically:YES];

// Now construct the parameters that will be passed to Unirest
NSDictionary* parameters = [NSDictionary dictionaryWithObjectsAndKeys:@"en_US", @"image_request[locale]", @"en", @"image_request[language]", imageURL, @"image_request[image]", nil];

// And the headers
NSDictionary* headers = [NSDictionary dictionaryWithObjectsAndKeys:@"<mashape-key>", @"X-Mashape-Authorization", nil];

// Call the API using Unirest
HttpJsonResponse* response = [[Unirest post:^(BodyRequest* request) {
    [request setUrl:@"https://camfind.p.mashape.com/image_requests"];
    [request setHeaders:headers];
    [request setParameters:parameters];
}] asJson];