K
Q

Spring RestTemplate with rootUri return URI is not absolute error

1/15/2019

I have a RestTemplate that I build it with RestTemplateBuilder. I set the rootUri for builder. In below method (updateState1) sometimes I got the "URI is not absolute" error. For example when I called this method concurrently for 2 times I often got 1 error.

EDIT and Solution: I use this RestTemplate in service task of camunda process. I launch this project in kubernetes container that has different timezone with the oracle database. When I add timezone variable every things work fine.

Spring boot version: 2.1.1.RELEASE

Here is my code:

@Component
@Slf4j
public class CoreServiceClient {

    private RestTemplate restTemplate;

    private static final String root = "http://localhost:8080/test/api/";

    public CoreServiceClient(RestTemplateBuilder restTemplateBuilder) {
        restTemplate = restTemplateBuilder.rootUri(root).build();
    }


    public void updateState1(UpdateParam updateParam) {
        HttpHeaders headers = generateHeader();
        UpdateRequest updateRequest = new UpdateRequest(updateParam.getState());

        HttpEntity<UpdateRequest> httpEntity = new HttpEntity<>(updateRequest, headers);

        ResponseEntity<String> response = restTemplate.exchange(
                "/food/{id}/state",
                HttpMethod.PUT, httpEntity, String.class, updateParam.getId());

    }
    public void updateState2(String id) {
        HttpHeaders headers = generateHeader();
        UpdateRequest updateRequest = new UpdateRequest("done");

        HttpEntity<UpdateRequest> httpEntity = new HttpEntity<>(updateRequest, headers);

        ResponseEntity<String> response = restTemplate.exchange(
                "/food/{id}/state",
                HttpMethod.PUT, httpEntity, String.class, id);

    }
}

cuase (stacktrace):

Caused by: java.lang.IllegalArgumentException: URI is not absolute
    at java.net.URI.toURL(URI.java:1088)
    at org.springframework.http.client.SimpleClientHttpRequestFactory.createRequest(SimpleClientHttpRequestFactory.java:145)
    at org.springframework.http.client.support.HttpAccessor.createRequest(HttpAccessor.java:87)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:730)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:669)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:578)
    at com.test.client.CoreServiceClient.updateState(CoreServiceClient.java:39)
    at sun.reflect.GeneratedMethodAccessor263.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.camunda.bpm.engine.impl.javax.el.BeanELResolver.invoke(BeanELResolver.java:479)
    ... 85 more
-- mohammad_1m2
camunda
java
kubernetes
resttemplate
spring

Similar Questions

Managing multiple Pods with one Deploy
Trying to set up an ingress with tls and open to some IPs only on GKE
GCE Kubernetes: Persistent disk and Persistent Volume claim
Accessing spring boot controller endpoint in kubernetes pod

2 Answers

1/15/2019

Remove / in root:

private static final String root = "http://localhost:8080/test/api";

RestTemplate accepts uriTemplate as long as they start with / so your root should be without it. if it doesn't start with / it will consider it as a full URL

-- stacker
Source: StackOverflow
1/15/2019

I try with the same code. I do not get this error. Spring boot version: 1.5.0.RELEASE

Instead of POST, I tried with a GET API with same URL pattern. The / at the end of the path does not matter.

@Component
public class CoreServiceClient {
    private RestTemplate restTemplate;

    private static final Logger LOGGER = LoggerFactory.getLogger(CoreServiceClient.class);
    private static final String root = "http://localhost:8080/test/api/";

    public CoreServiceClient(RestTemplateBuilder restTemplateBuilder) {
        restTemplate = restTemplateBuilder.rootUri(root).build();
    }


    public void updateState(String id) {

        try {
            ResponseEntity<String> response =
                    restTemplate.exchange("/food/{id}/state", HttpMethod.GET, null, String.class, id);
            LOGGER.info("Resp: {}", response.getStatusCode());
            LOGGER.info("Resp: {}", response.getBody());
        } catch (Exception e) {
            LOGGER.error(e.getMessage(), e);
        }


    }
}

I added a dummy controller with the same path:

@RestController
@RequestMapping("/test/api")
public class FooController {

    @GetMapping("/food/{id}/state")
    public ResponseEntity<String> fooState(@PathVariable String id) {
        return new ResponseEntity<String>("EATING", HttpStatus.OK);
    }
}

To test, I added another controller:

@RestController
@RequestMapping("/client")
public class CoreServiceClientController {

    @Autowired
    private CoreServiceClient client;

    @GetMapping
    public ResponseEntity<String> goGet() {
        client.updateState("1001");
        return new ResponseEntity<>("HELLO", HttpStatus.OK);
    }
}

Everything works fine for me.

Log:

2019-01-15 23:23:19.870  INFO 22570 --- [nio-8080-exec-1] com.example.demo001.CoreServiceClient    : Resp: 200
2019-01-15 23:23:19.871  INFO 22570 --- [nio-8080-exec-1] com.example.demo001.CoreServiceClient    : Resp: EATING
-- Sabuj Das
Source: StackOverflow