go.js：节点取消自适应连线

myDiagram.model.linkFromPortIdProperty = "fromPort"; myDiagram.model.linkToPortIdProperty = "toPort";

或者直接在数据中添加

"linkFromPortIdProperty": "fromPort",
"linkToPortIdProperty": "toPort",

记录连线时的端口号，从连线时的端口号连线