Resttemplate - ResponseErrorHandler - 不能抛出自定义异常

问题描述

我有一个使用 RestTemplate 和 ResponseErrorHandle 的消费者 Restful Web 服务，该应用程序生成并使用 json。由于未知原因，我无法在扩展 ResponseErrorHandler 的类的 handleError() 中抛出我自己的异常。当我尝试调用自定义异常时，我得到以下堆栈跟踪：

    ServerRuntime$Responder     : An exception mapping did not successfully produce and processed a response. Logging the exception propagated to the container.

com.test.exception.MyOwnServerException: 
    at com.ing.commonams.exception.RestTemplateResponseErrorHandler.handleError(RestTemplateResponseErrorHandler.java:23) ~[classes/:na]
    at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:782) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:740) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:674) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:583) ~[spring-web-5.2.5.RELEASE.jar:5.2.5.RELEASE]

代码如下：

@Component
@Slf4j
public class RestTemplateResponseErrorHandler implements ResponseErrorHandler {

    @Override
    public void handleError(ClientHttpResponse httpResponse)
            throws IOException {

        if (httpResponse.getStatusCode().series() == HttpStatus.Series.SERVER_ERROR) {
            //Handle SERVER_ERROR
            log.error("Handling Server Error");
            if (httpResponse.getStatusCode() == HttpStatus.NOT_IMPLEMENTED) {
                throw new MyOwnServerException(httpResponse);
            }
        } else if (httpResponse.getStatusCode().series() == HttpStatus.Series.CLIENT_ERROR) {
            //Handle CLIENT_ERROR
            if (httpResponse.getStatusCode() == HttpStatus.NOT_FOUND) {
                log.error("Handling Client Error");
                throw new MyOwnClientException(httpResponse);
            }
        }
    }

一个简单的自定义异常类，

@Getter
public class MyOwnServerException extends RuntimeException {
    private static final long serialVersionUID = 1L;

    private String applicationId;
    private int httpStatusCode;
    private String message;
    private String detailMessage;
    private Long timestamp;

    public MyOwnServerException(ClientHttpResponse response) throws IOException {
        super();
        this.httpStatusCode = response.getRawStatusCode();
        this.applicationId = "MS2 Application";
        this.message = response.getStatusText();
        this.detailMessage = IOUtils.toString(response.getBody(),Charset.defaultCharset());
        this.timestamp = System.currentTimeMillis();
    }

谁能告诉我这里出了什么问题。

解决方法

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exception handleerror mapping resttemplate