Question

我在执行它时将它放在示例主类中我得到nullpointerexception.it并没有提供更多细节。

我的意图是我正在使用AWS lambda函数，它会在任何节点出现故障时触发上述代码我在上面的代码中调用了一个帖子请求，但它没有用你能不能请任何人指导我这个amazonhttpclient相关查询的写步骤或链接。

ClientConfiguration configuration = new ClientConfiguration();
    configuration.setMaxErrorRetry(3);
    configuration.setConnectionTimeout(501000);
    configuration.setSocketTimeout(501000);
    configuration.setProtocol(Protocol.HTTP);
            AmazonHttpClient httpClient = new AmazonHttpClient(
                    configuration);
            RequestExecutionBuilder httpRequestBuilder = httpClient.requestExecutionBuilder();
            @SuppressWarnings("rawtypes")
            String url = "http://localhost:8080/spring4upgrade/processFailureNode"; 
            AmazonWebServiceRequest amazonWebServiceRequest = new AmazonWebServiceRequest() {
            };

            Request paramRequest = new DefaultRequest(amazonWebServiceRequest,"execute-api");
            paramRequest.setEndpoint(URI.create(url));
            paramRequest.setHttpMethod(HttpMethodName.POST);
            paramRequest.addParameter("sgroup", "xyz");
            paramRequest.addParameter("host", "localhost");
            paramRequest.addParameter("port", "8080");
            httpRequestBuilder.request(paramRequest);
            httpRequestBuilder.execute();

Answer 1

之前

httpRequestBuilder.execute();

在下面添加代码

httpRequestBuilder.errorResponseHandler(new ErrorResponseHandler());

ErrorResponseHandler的代码

public class ErrorResponseHandler implements HttpResponseHandler<SdkBaseException> {

    @Override
    public SdkBaseException handle(final HttpResponse response) throws Exception {
        // TODO
        return null;
    }

    @Override
    public boolean needsConnectionLeftOpen() {
        return false;
    }
}

与amazonhttpclient的nullpointer异常

1 个答案: