我有类似的服务:
GetPaymentDeadlineExtension(data: PatientInput): Observable<any> {
return this.httpClient.post<any>(
this.root + `/api/PaymentDeadline/RegisterPatientInput`,data);
}
在我的Web API控制器中:
[Route("RegisterPatientInput")]
public SrvInvoiceCompositView[] RegisterGetPaymentDeadlineExtension(PatientInput data)
{
SrvInvoiceCompositView[] list = null;
string ContractNo = String.Empty;
string DktInvoiceNo = String.Empty;
try
{
ContractNo = data.BillNumber.Split('-')[0];
DktInvoiceNo = data.BillNumber.Split('-')[1];
list = DkService.SrvFindInvoiceCompositViewDentaPay(DktInvoiceNo, data.Amount, data.PatientNumber, ContractNo);
}
catch(Exception ex)
{
// exception to be returned to angular app.
}
return list;
}
以及在我的component.ts文件中:
this.homePageService.GetPaymentDeadlineExtension(this.input).subscribe(
data=>
{
this.patientInfo = data;
},
error=>
{
//i want to get my ex.message here, so i can display it
}
)
this.homePageService.GetPaymentDeadlineExtension(this.input)
.pipe(catchError((error)=> { handleError here}).subscribe(
data=>
{
this.patientInfo = data;
}
)
更多信息:https://www.learnrxjs.io/learn-rxjs/operators/error_handling/catch
要在RxJS subscribe
方法中出现错误,您必须返回一个没有2xx状态代码的http响应。例如,根据您的代码片段,错误请求(400)可能是一个不错的选择。因此,在.NET Core端,您需要按以下方式返回IActionResult
:
[Route("RegisterPatientInput")]
public IActionResult RegisterGetPaymentDeadlineExtension(PatientInput data)
{
SrvInvoiceCompositView[] list = null;
string ContractNo = String.Empty;
string DktInvoiceNo = String.Empty;
try
{
ContractNo = data.BillNumber.Split('-')[0];
DktInvoiceNo = data.BillNumber.Split('-')[1];
list = DkService.SrvFindInvoiceCompositViewDentaPay(DktInvoiceNo, data.Amount, data.PatientNumber, ContractNo);
return Ok(list); // This is has http status code 200 in the http response
}
catch(Exception ex)
{
return BadRequest(ex.Message); // This has http status code 400 in the http response
}
}
如果放入以下Angular Component文件:
this.homePageService.GetPaymentDeadlineExtension(this.input).subscribe(
data=>
{
this.patientInfo = data;
},
error=>
{
console.log(error);
}
)
http请求之后,您将能够从浏览器控制台的后端看到异常消息。
我不完全了解所开发软件的用例,但是不建议在生产的前端显示异常。黑客可能会从服务器代码中提取一些信息,从而导致故意的异常。