Spring controller 给出错误请求 400

Question

我经常将 JSON 作为请求正文的一部分传递给我的 spring 控制器。 不是为了我的生活，我不能让这个工作吗？ 给我 400 个错误的请求。

Spring controller：

  @RequestMapping(value = "/saverefunds", method = RequestMethod.POST)
    @ResponseBody
    public String saveRefunds(Model model, HttpSession session, AS400WriteRefundLine as400WriteRefundLine, @RequestBody CreateRefund refunddetails) throws ParseException, IOException {
////
}

调用它的 Javascript 代码：

let refunddetails = {
            blackbookno: refundedInvoiceNo,
            RfExno: "00",                                      
            transactionType: "R",
            stockid: stockid,
            sku: sku,
            refundtype: refundtype,
            refundreason: refundreason,
            btsflag: btsflag,
            uniqueid: uniqueid,
            thisrefundamount: thisrefund,
            firstrecord: firstRecord.toString(),                
            nextRfEx:"1",                                        
            firstname: wFname,
            surname: wLname,
            address1: wAdd1,
            address2: wAdd2,
            town: wTown,
            county: wCounty,
            landline: wTelno,
            mobile: wMobile,
            email: wEmail
        };

        await $.ajax({
            type: 'POST',
            contentType: 'application/json; charset=utf-8',
            url: "saverefunds",
            data: JSON.stringify(refunddetails),
            success: function (data) {
                alert(data);
                if (data.substring(0, 2) != "OK:") {
                    // ERROR
                    alert("postErr: " + data);
                } else {
                    alert('Refund Generated');
                }
                return true;
            },
            error: function (error) {
                alert('ERROR:'+error.responseText);
            }
        });

CreateRefund object：

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@JsonIgnoreProperties
public class CreateRefund {
    private String blackbookno, RfExno, transactionType, stockid, sku, refundtype, refundreason, btsflag,
            uniqueid, thisrefundamount, firstrecord, nextRfEx, firstname,
            surname, address1, address2, town, county, landline, mobile, email;
}

POJO 与正在传递的 JSON 匹配，所以不确定它还能是什么？

有人看到有什么明显的错误吗？

The only way I can pass the data across is by using Map<String,String> in the spring controller as opposed to CreateRefund object...So I'm assuming the json mapping isn't working?

非常感谢

Answer 1

错误是您在发送之前将数据转换为字符串。

  await $.ajax({
            type: 'POST',
            contentType: 'application/json; charset=utf-8',
            url: "saverefunds",
            data: refunddetails,  <---------pass the json object here
            success: function (data) {

还

public String saveRefunds(Model model, HttpSession session, AS400WriteRefundLine as400WriteRefundLine, @RequestBody CreateRefund refunddetails) throws ParseException, IOException {
////

究竟什么是AS400WriteRefundLine as400WriteRefundLine以及 spring 如何知道放在那里的价值？