Question

这是NullPointerExceptionMapper类

package com.sample.Exceptionhandler;

import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;
import response.Message;

@Provider
public class NullPointerExceptionMapper implements ExceptionMapper<NullPointerException> {

    public Response toResponse(NullPointerException ex) {

        Message message=new Message(500,ex.getMessage(),200);
        return Response.status(Status.NOT_FOUND).entity(message)
                .build();
    }
}

这是Message类

package response;

public class Message {

    private int status;
    private String message;
    private int code;

    public Message() {
    }

    public Message(int status, String message, int code) {
        super();
        this.status = status;
        this.message = message;
        this.code = code;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

这是Controller方法

@RequestMapping(value = "/getOrder", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public List<PurchaseOrderHeaderDto> getOrders(){
    String exceptionOccured="NULL_POINTER";
    if(exceptionOccured.equalsIgnoreCase("NULL_POINTER")){
        throw new NullPointerException("Null Pointer Exception");
    }
    return purchaseImpl.GetPurchaseOrder();
}

我无法处理抛出的异常，并且正在使用JAX-RS对其进行处理，但是它无法正常工作，欢迎任何建议，可以帮助我解决该异常。

Answer 1

您正在将JAX-RS与Spring MVC混合使用。您的控制器代码是Spring MVC，而您尝试使用fetch( 'http://localhost:8888/magento/rest/V1/products?searchCriteria[filter_groups][0][filters][0][field]=name&searchCriteria[filter_groups][0][filters][0][value]=product name', { method: 'GET', headers: { 'Content-Type': 'application/json', Authentication: 'Bearer fwynACCESS_TOKENbal9tfr' } } ) .then((res) => { if (res.status !== 200 && res.status !== 204) reject({ message: 'There was an error with the products service' }) resolve(res.json()) }) .catch((err) => reject(err))进行异常处理的尝试是JAX-RS。这是两个完全不同且不兼容的框架。对于Spring MVC，您想使用@ControllerAdvice类。

我无法使用JAX-RS

1 个答案: