javascript - 如何解决错误 : An unexpected 'StartArray' node was found when reading from the JSON reader. 预期为 'StartObject' 节点。？

Question

我正在尝试使用 Web API 将实体添加到 Dynamics 2016 On Premise。该实体引用了其他三个实体。当我尝试发布实体时，我收到以下错误。

An unexpected 'StartArray' node was found when reading from the JSON reader. A 'StartObject' node was expected.

此错误发生在我引用的三个实体上:ccseq_clientid、ccseq_employeeid、ccseq_setid。

我看过 this问题和 this问题，但没有成功。

这个错误是什么意思，我该如何解决？

变量

public contentType: string = "application/json;";
public dataType: string = "json";
public expenseTransaction: string = this.connection + "ccseq_expensetransactions";
public expenseTransactionSet: string = this.connection + "ccseq_expensetransactionsets";
public client: string = this.connection + "ccseq_clients";
public systemUser: string = this.connection + "systemusers";

Ajax 调用

Create(expenses: Array<ExpenseTransactionBase>): void {
    for (let i: number = 0; i < expenses.length; i++) {
        $.ajax({
            url: this.expenseTransaction,
            type: "POST",
            contentType: this.contentType,
            accepts: this.contentType,
            dataType: this.dataType,
            data: JSON.stringify(expenses[i].toJSON()),
            success: function (data: any): void {
                alert("Success");
            },
            error: function (data: any) {
                alert("error");
            }
        });
    }
};

JSON 创建

toJSON(): any[] {
     let json = [];
     json[0] = {
         "ccseq_clientid@odata.bind": this.client + "(" + this.ccseq_clientid + ")",
         "ccseq_clientnumber": this.ccseq_clientnumber,
         "ccseq_employeefirstname": this.ccseq_employeefirstname,
         "ccseq_employeelastname": this.ccseq_employeelastname,
         "ccseq_employeeid@odata.bind": this.systemUser + "(" + this.ccseq_employeeid + ")",
         "ccseq_expenseerrorcode": this.ccseq_expenseerrorcode,
         "ccseq_generalledgername": this.ccseq_generalledgername,
         "ccseq_generalledgernumber": this.ccseq_generalledgernumber,
         "ccseq_groupcode": this.ccseq_groupcode,
         "ccseq_mastercardposteddate": this.ccseq_mastercardposteddate,
         "ccseq_mastercardtransactiondate": this.ccseq_mastercardtransactiondate,
         "ccseq_mastercardtransactionparentcompany": this.ccseq_mastercardtransactionparentcompany,
         "ccseq_navcompanycode": this.ccseq_navcompanycode,
         "ccseq_navemployeeid": this.ccseq_navemployeeid,
         "ccseq_navgeographycode": this.ccseq_navgeographycode,
         "ccseq_navjobclasscode": this.ccseq_navjobclasscode,
         "ccseq_navservicecode": this.ccseq_navservicecode,
         "ccseq_setid@odata.bind": this.expenseTransactionSet + "(" + this.ccseq_setid + ")",
         "ccseq_transactionamount": this.ccseq_transactionamount,
         "ccseq_transactiondate": this.ccseq_transactiondate,
         "ccseq_transactiondescription": this.ccseq_transactiondescription,
         "ccseq_transactiontype": this.ccseq_transactiontype,
         "ccseq_vendor": this.ccseq_vendor,
         "statecode": this.statecode
     };

     return json;
 }

Answer 1

如错误中所述，您应该发布一个 JSON 对象，而不是一个数组。

我相信你需要的改变就是改变:

toJSON(): any[] {
     let json = [];
     json[0] = {
         //...

到

toJSON(): any[] {
     let json = {
        //...