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I am new to webservices and trying to write a RESTFul webservice's client using RestTemplate. I am using org.springframework.http.converter.xml.MarshallingHttpMessageConverter as message converter and org.springframework.oxm.xstream.XStreamMarshaller as marshaller.
Is there any way to debug this further or find out the root cause of this issue?
My consumer class looks like this -
@SuppressWarnings("unchecked")
public List<Deal> getClientInformation() throws RestClientException {
return restTemplate.getForObject(webServiceURL, List.class);
}
Exception :
Exception in thread "main" org.springframework.web.client.ResourceAccessException: I/O error: Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:359)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:307)
at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:177)
at main.java.com.sample.consumer.DealConsumer.getClientInformation(Consumer.java:35)
at main.java.com.client.WebserviceConsumerTestClient.main(WebserviceConsumerTestClient.java:16)
Caused by: java.net.ConnectException: Connection refused: connect at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:359)
266
Default Error Handling By default, the RestTemplate will throw one of these exceptions in the case of an HTTP error: HttpClientErrorException – in the case of HTTP status 4xx. HttpServerErrorException – in the case of HTTP status 5xx. UnknownHttpStatusCodeException – in the case of an unknown HTTP status.
RestTemplate provides a synchronous way of consuming Rest services, which means it will block the thread until it receives a response. RestTemplate is deprecated since Spring 5 which means it's not really that future proof. First, we create a Spring Boot project with the spring-boot-starter-web dependency.
public class RestTemplateBuilder extends Object. Builder that can be used to configure and create a RestTemplate . Provides convenience methods to register converters , error handlers and UriTemplateHandlers .
TestRestTemplate is not an extension of RestTemplate, but rather an alternative that simplifies integration testing and facilitates authentication during tests. It helps in customization of Apache HTTP client, but also it can be used as a wrapper of RestTemplate.
the webServiceURL you are trying to call is not reachable. Ensure the webServiceURL path is correct and is listening.
PS. Also check if there is some firewall issue at Server side.
Wireshark may help you to debug further.
http://www.wireshark.org/
142
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