Error on load Model Uncaught TypeError: Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'

Question

当我调用我的 XMLModel 并尝试 oModel.getXML 浏览器控制台上出现问题：

"Uncaught TypeError: Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'"

但是如果，我 oModel.setXML 直接在代码中，如：

oModel.setXML("<questionnaire><question><id>A01</id><text>Whats is you ID Number?</text><answer>1234</answer></question></questionnaire>");

那么错误就不会发生

这是我的 onInit 控制器函数：

var oModel = new sap.ui.model.xml.XMLModel();
    oModel.loadData("model/questionario.xml");
    var view = this.getView();  
    view.setModel(oModel);
    var oData = oModel.getXML();
    console.log(oData);

    //This is what i expect to do with the return

        var oData = oModel.getProperty("/pergunta/texto");
        var label_01 = view.byId("lbl_01");
        label_01.setText(oData);



},

这是我的 xml 模特

<questionnaire>
    <question>
       <id>A01</id>
       <text>Whats is you ID Number?</text>
       <answer>1234</answer>
    </question>
</questionnaire>

感谢大家的帮助

Answer 1

您可能正在为数据加载的异步特性而苦恼；您正在尝试在数据尚未加载时获取数据。

要么切换到同步加载——绝对不推荐！——要么在使用attachRequestCompleted事件处理程序加载数据后获取数据：

var oModel = new sap.ui.model.xml.XMLModel();
oModel.loadData("model/questionario.xml");

oModel.attachRequestCompleted(function(oEvent) {
    var oData = oModel.getXML();
    console.log(oData);
});

Error on load Model Uncaught TypeError: Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'

Error on load Model Uncaught TypeError: Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'

xml

model-view-controller

sapui5