Question

 Code:

     NSData *imgd=UIImageJPEGRepresentation(Obj.thumbImage, 0.5);
      [imgName insertObject:Obj.imageName atIndex:i];
      [imgName1 insertObject:imgd atIndex:i];
        [dic setObject:imgName forKey:@"name"];
        [dic setObject:imgName1 forKey:@"image"];
        [asiLoadingFormRequest setPostValue:contactName forKey:@"receivername"];
        [asiLoadingFormRequest setPostValue:[dic JSONRepresentation] forKey:@"imagedata"];

通过json发送图像的方式是否正确？当我调用服务器时，我收到以下错误消息

 "Error Domain=org.brautaset.JSON.ErrorDomain Code=1 \"Unsupported value for key image in object\" UserInfo=0x9a611f0 {NSUnderlyingError=0x9a4a290 \"JSON serialisation not supported for NSConcreteMutableData\", NSLocalizedDescription=Unsupported value for key image in object

Json是否存在不支持图像的问题？我对此问题一无所知。任何帮助都会受到赞赏。谢谢提前。

Answer 1

试试这个：

编码部分：

首先将Base64课程添加到您的项目中。

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http:xxx.me.com/me.json"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:100.0];


NSData *imageData = UIImagePNGRepresentation ([UIImage imageWithContentsOfFile: @"ur PNG image path"]);
[Base64 initialize];
NSString *imageString = [Base64 encode:imageData];

NSArray *keys = [NSArray arrayWithObjects:@"image_id",@"image_name","image",nil];
NSArray *objects = [NSArray arrayWithObjects:@"22",@"myImageName.png",imageString,nil];

NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];

NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary options:kNilOptions error:&error];

[request setHTTPMethod:@"POST"];
[request setValue:[NSString stringWithFormat:@"%d",[jsonData length]] forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:jsonData];

 NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

对于服务器端的解码（如果使用的是php），请参阅this。

Answer 2

您无法将NSData发送为JSON，如果您要通过JSON发送图片，则必须先在Base64中对其进行编码，然后在服务器上对其进行解码

看看这个 https://github.com/l4u/NSData-Base64

通过json发送图像失败

2 个答案: