Angular从spring boot获取异常文本

import { HttpClient } from '@angular/common/http';

constructor(private http: HttpClient) {}

getExceptionText() {
  return this.http.get('/api/exception').toPromise();
}

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ExceptionController {

    @GetMapping("/api/exception")
    public String getExceptionText() {
        try {
            // 执行可能抛出异常的代码
        } catch (Exception e) {
            return e.getMessage(); // 返回异常文本
        }
        return "No exception occurred.";
    }
}

exceptionText: string;

fetchExceptionText() {
  this.getExceptionText().then((response: string) => {
    this.exceptionText = response;
  }).catch((error) => {
    console.error(error);
  });
}