RestTemplate读取超时不起作用

Question

我有一个springboot rest服务a使用RESTTemplate调用rest服务B。Rest服务A的restTemplate bean是按照下面的代码片段所示的超时设置创建的。

@Bean
RestTemplate getRestTemplate()
{
    CloseableHttpClient  closeableHttpClient = HttpClientBuilder.create().build();
    HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(closeableHttpClient);
    RestTemplate restTemplate = new RestTemplate(requestFactory);

    requestFactory.setConnectTimeout( 2000 );
    requestFactory.setReadTimeout( 2000 );

    return restTemplate;
}

try{
    restTemplate.postForEntity(urlSvcB, httpEntity, myObject.class);
}
catch (Exception ex){
  .....some code here.....
}

Answer 1

如果您正在使用spring boot，那么您可以尝试：

@Bean
public RestTemplate restTemplate(RestTemplateBuilder restTemplateBuilder) 
{
    return restTemplateBuilder
       .setConnectTimeout(...)
       .setReadTimeout(...)
       .build();
}

如果这还不行，那么在当前代码中，尝试在创建restTemplate或test之前设置requestFactory上的所有道具，方法是去掉CloseableHTTPClient，如下所示：

HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();
httpRequestFactory.setConnectionRequestTimeout(...);
httpRequestFactory.setConnectTimeout(...);
httpRequestFactory.setReadTimeout(...);
return new RestTemplate(httpRequestFactory);