Question

这是我的控制器代码

@GetMapping("/customerWasteRequest/{customer}")
public List<CustomerWasteRequest> getCustomerWasteRequest(@PathVariable String customer) {
    return service.fetchWasteRequestByCustomer(customer);
}

这是我的服务代码

public class CustomerWasteRequestService{
    @Autowired

    private CustomerWasteRequestRepository repo;

    public List<CustomerWasteRequest> fetchWasteRequestByCustomer(String customer) {
                return repo.findByCustomer(customer);
    }
}

存储库代码

@Repository
public interface CustomerWasteRequestRepository extends JpaRepository<CustomerWasteRequest, Integer> {

    public List<CustomerWasteRequest> findByCustomer(String customer);
}

当我调用函数-getCustomerWasteRequests

private baseUrl = 'http://localhost:8080/customerWasteRequest';

 getCustomerWasteRequests(customer:string) : Observable<any>{
    return this.http.get(`${this.baseUrl}/${customer}`);  
  }

这给了我错误

{“ cause”：{“ cause”：null，“ message”：“对于输入字符串：” newcustomer“”}}，“ message”：“无法从[java.lang.String]类型转换为[值'newcustomer'的java.lang.Integer]；嵌套异常为java.lang.NumberFormatException：对于输入字符串：“ newcustomer”“}

在http：// localhost：8080 / customerWasteRequests / newcustomer

Answer 1

“无法将类型'newcustomer'的类型[java.lang.String]转换为[java.lang.Integer]

您进入实体customer的财产CustomerWasteRequest是否具有类型Integer而不是String？

有什么办法可以在JPA Spring Boot中按列获取数据

1 个答案: