Errors always occur when making POST requests in SAPUI5, leading to a 500 Server Error specifically related to OData

Currently diving into the world of SAPUI5 and OData, I am in the process of creating a basic application that showcases employee data in a table. The objective is to add a new employee to the table whose information will be stored in the SAP backend.

While all GET requests are functioning as expected, encountering a server error (500) when attempting POST requests has left me puzzled. Could it be an issue with my create method or have I overlooked something crucial such as a specific header? (I understand that ideally odata.v2 should be used, but for the sake of this example... is there a glaring mistake that I'm missing?)

sap.ui.controller("zemployee_crud.EmpTable", {

    onInit: function() {
        var oView = this.getView();
        var oTable = this.byId("employeeTable"); 

        var oTemplate = new sap.m.ColumnListItem({
        cells: [new sap.m.Text({
            text: "{Empid}"
        }), new sap.m.Text({
            text: "{Empname}"
        }), new sap.m.Text({
            text: "{Empadd}"
        })]
        });

        var sServiceUrl = "proxy/http/<server>:<port>/sap/opu/odata/sap/ZEMPLOYEE_SRV";
        var oModel = new sap.ui.model.odata.ODataModel(sServiceUrl, false);

        this.getView().setModel(oModel);

        oTable.bindAggregation("items", {
            path: "/EmployeeSet",
            template: oTemplate
        });
    },

Save: function() {
    var oId = this.getView().byId("Id").getValue();
    var oName = this.getView().byId("Name").getValue();
    var oAddress = this.getView().byId("Address").getValue(); 
    var oDialog = this.getView().byId("Dialog");

    var oEntry = {};

    oEntry.Empid = oId;
    oEntry.Empname = oName;
    oEntry.Empadd = oAddress;

    var oModel = this.getView().getModel();

    oModel.create("/EmployeeSet", oEntry, null, function (response) {
        alert("Success!");
        // handle response
    }, function (Error) {
        alert("Fail!"); 
        // handle response
    });
}

Answer №1

Encountering this situation is frequently seen in the realm of UI5 development. The SAP Gateway Server opts not to disclose the specific error to the frontend in order to prevent any potential data leakage.

To pinpoint the root of the issue, it is recommended to navigate to the transaction /IWFND/ERROR_LOG within your backend system. In that location, you will be able to view the request and determine the exact cause of the error.

Answer №2

I was relieved to discover the root cause of the problem - it turned out to be an issue with the BSP application that had been generated through Eclipse. Once I resolved this issue, the POST requests started functioning properly.

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