java - Spring RestTemplate with rootUri 返回 URI 不是绝对错误

Question

我有一个 RestTemplate，我使用 RestTemplateBuilder 构建它。我为构建器设置了 rootUri。在下面的方法(updateState1)中，有时我会收到“URI 不是绝对的”错误。例如，当我同时调用此方法 2 次时，经常会出现 1 个错误。

编辑和解决方案:我在 camunda 进程的服务任务中使用这个 RestTemplate 。我在 kubernetes 容器中启动这个项目，该容器与 oracle 数据库具有不同的时区。当我添加时区变量时，一切正常。

Spring启动版本:2.1.1.RELEASE

这是我的代码:

@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(堆栈跟踪):

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

Answer 1

删除根目录中的/:

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

RestTemplate 接受 uriTemplate，只要它们以 / 开头，因此您的 root 应该不包含它。如果它不是以 / 开头，它会将其视为完整的 URL