从ios应用程序上传图像到服务器

问题描述：

我正在一个应用程序中，我想直接在服务器路径上保存图像。我正在使用下面的代码，但它没有保存该路径上的图像。从服务器响应即将空，而不是savig图像服务器路径从ios应用程序上传图像到服务器

NSData *imageData = UIImageJPEGRepresentation(image, 90); 
// setting up the URL to post to 
NSString *urlString = @"http://192.0.168.109/Mobile_tutor/webservice/images/questions/"; 

// setting up the request object now 
request = [[NSMutableURLRequest alloc] init]; 
[request setURL:[NSURL URLWithString:urlString]]; 
[request setHTTPMethod:@"POST"]; 

/* 
add some header info now 
we always need a boundary when we post a file 
also we need to set the content type 

You might want to generate a random boundary.. this is just the same 
as my output from wireshark on a valid html post 
*/ 
NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"]; 
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; 
[request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 

/* 
now lets create the body of the post 
*/ 
NSMutableData *body = [NSMutableData data]; 
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithString:@"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]; 

// now lets make the connection to the web 
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

NSLog(@"--response string -%@",returnString);

提供什么是和不在工作的细节，你会得到什么错误？ – Wain

答

您可以使用AFNetworking所以您不必到Digg成多部分请求的格式。

AFHTTPClient *client = [[AFHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:@"http://192.0.168.109"]]; 
NSDictionary *simpleParams = @{ @"key": @"value" }; 
NSMutableURLRequest* request = [client multipartFormRequestWithMethod:@"POST" path:@"/Mobile_tutor/webservice/images/questions/" parameters: simpleParams constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { 

     [formData appendPartWithFileData:fileData 
            name:@"paramName" 
           fileName:@"filename.png" 
           mimeType:@"image/png"]; 
    }];

然后根据预期的响应创建一个操作。例如，如果你指望JSON：

AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) { 

    // handle success 

} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { 

    // handle error 

}];

你可以在AFNetworking documentation更多信息。

从ios应用程序上传图像到服务器

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