ios - 附加图像并发布到 JSON API

Question

如何创建带有图像的帖子并将其作为 iPhone 应用程序的特色图像附加？

我正在使用带有JSON API 插件的 wordpress

我创建帖子的网址：<--对此的参考

http://www.example.com/api/create_post/?nonce=eea4bb4ce5&status=publish&title=Test&content=test%20content&categories=animals

现在我需要将手机图库中的图片附加到此网址。我怎样才能做到这一点？

Answer 1

试试这个。使用 JSON POST 方法。您可以像这样附加所有参数。

-(void)uploadImage
{

    NSString *method =  @"";
    NSString *username   = @"";
    NSString *token   = @"";

    NSString *urlString = [NSString stringWithFormat:@"%@",@"yoururl"];

    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    [request setURL:[NSURL URLWithString:urlString]];
    [request setHTTPMethod:@"POST"];

    NSMutableData *body = [NSMutableData data];

    // file
    NSData *imageData = UIImageJPEGRepresentation( imageView.image, 0.8);
    NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"image\"; filename=\".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 stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    //  parameter username
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"username\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[username dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    //  parameter token
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"auth_token\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[token dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    //    //  parameter method
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"method\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[method dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

    // close form
    [body appendData:[[NSString stringWithFormat:@"--%@--\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(@"%@",returnString);
    [returnString release];
}

希望这可以帮助你。

Answer 2

要完全满足您的要求，您需要使用POST 方法在 Web 服务上发送图像文件

首先从照片库中选择图像或从相机中获取图像并使用以下代码制作该图像的数据。

   NSString *imgName = [NSString stringWithFormat:@"ImageTest"];
   NSData *imgData=UIImagePNGRepresentation(imgView.image);

   NSString* urlstring = [NSString stringWithFormat:@"http://www.example.com/api/create_post/?nonce=eea4bb4ce5&status=publish&title=Test&content=test%20content&categories=animals&imageFile=%@",imgName];
   NSLog(@"URL >> %@",urlstring);

   NSURL url = [NSURL URLWithString:[urlstring stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    //===============================================        
    NSMutableURLRequest postRequest = [[[NSMutableURLRequest alloc] init] autorelease];
    [postRequest setURL:url];
    [postRequest setHTTPMethod:@"POST"];

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

    NSMutableData  *body = [[NSMutableData alloc] init];
    [postRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

imgName这是此代码中非常重要的对象，它是您需要在 Web 服务中传递的图像，如上所示。

        [body appendData:[[NSString stringWithString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.png\"\r\n",imgName]] dataUsingEncoding:NSUTF8StringEncoding]]; //img name
        [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

        // Add Image imgData is Declare as Above.
        [body appendData:[NSData dataWithData:imgData]];



    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [postRequest setHTTPBody:body];

    NSURLResponse *response;
    NSError error = nil;


    NSData* data = [NSURLConnection sendSynchronousRequest:postRequest returningResponse:&response error:&error];
    NSString *result=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
  //  NSString * jsonRes = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];


    NSLog(@"result = %@",[result JSONValue]);

它与我完美合作！我希望你能从这里得到帮助！