我有一个流程,用于从IBM Object存储中获取图像,并使用我训练过的自定义分类器将其传递给Watson Visual Recognition节点进行分类。几周前它停止工作,视觉识别节点会抛出一个错误,说“接收到无效的JSON参数”。无法解析。"。我使用"改变"节点设置要分类的消息参数,如下所示: 我注意到如果我删除了我在其中设置分类器ID的节点,那么我没有得到任何错误,并且使用默认分类器对图像进行分类。我尝试使用函数节点使用以下代码设置参数,但我得到了同样的错误:
msg.params = {};
msg.params["detect_mode"] = "classify";
msg.params["classifier_ids"] = "person_705615375";
msg.params["threshold"] = 0;
return msg;
此外,如果我将分类器设置为"默认"应根据视觉识别节点的信息页面使用默认分类器对图像进行分类。但是我仍然得到同样的错误。以下是传递用于分类的消息示例:
来自视觉识别节点的一些额外信息的结果:
result: object
error: object
message: "Invalid JSON parameter received. Unable to parse."
stack: "Error: Invalid JSON parameter received. Unable to parse.↵ at Request._callback (/home/vcap/app/node_modules/node-red-node-watson/node_modules/watson-developer-cloud/lib/requestwrapper.js:85:15)↵ at Request.self.callback (/home/vcap/app/node_modules/node-red-node-watson/node_modules/watson-developer-cloud/node_modules/request/request.js:186:22)↵ at emitTwo (events.js:87:13)↵ at Request.emit (events.js:172:7)↵ at Request.<anonymous> (/home/vcap/app/node_modules/node-red-node-watson/node_modules/watson-developer-cloud/node_modules/request/request.js:1163:10)↵ at emitOne (events.js:77:13)↵ at Request.emit (events.js:169:7)↵ at IncomingMessage.<anonymous> (/home/vcap/app/node_modules/node-red-node-watson/node_modules/watson-developer-cloud/node_modules/request/request.js:1085:12)↵ at IncomingMessage.g (events.js:260:16)↵ at emitNone (events.js:72:20)↵ at IncomingMessage.emit (events.js:166:7)↵ at endReadableNT (_stream_readable.js:923:12)↵ at nextTickC..."
code: 400
images_processed: 0
error: "Invalid JSON parameter received. Unable to parse."
description: "Invalid JSON parameter received. Unable to parse."
error_id: "parameter_error"
答案 0 :(得分:2)
我得到了同样的错误。
试试这种方式。 像这样重写函数节点:
private List<Product> _selectedProducts;
public List<Product> SelectedProducts
{
get
{
return _selectedProducts;
}
}
public string ProductName { get; set; }
public string ProductCategory { get; set; }
private void frmSearchProducts_Load(object sender, EventArgs e)
{
_selectedProducts = new List<Product>();
this.KeyPreview = true;
//TODO: do search product
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.KeyCode)
{
case Keys.Enter:
{
//TODO: Get your selected on gridview...
_selectedProducts = new List<Product>();
// set dialog result
DialogResult = DialogResult.OK;
// close form
Hide();
}
break;
}
}
&#34; detect_mode&#34;可以在视觉识别节点中设置。