I have been looking for how to enable transparent processing of gzip'ed response using RestTemplate with OkHttp3 set as its http client.
Below is how I define the bean for RestTemplate:
@Bean
public RestTemplate restTemplate(RestTemplateBuilder restTemplateBuilder) {
RestTemplate restTemplate = restTemplateBuilder //
.rootUri(_endpoint) //
.additionalInterceptors(new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body,
ClientHttpRequestExecution execution) throws IOException {
request.getHeaders().add(HttpHeaders.ACCEPT_ENCODING, "gzip");
ClientHttpResponse response = execution.execute(request, body);
return response; // if I set a breakpoint here, I
// can see it's OkHttp3ClientHttpResponse
}
}) //
.build();
return restTemplate;
}
In my pom.xml I have:
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
</dependency>
Sure there is a solution to enable gzip response processing. But to me that's no transparent.
There is a solution for RestTemplate + Apache HttpClient which I only need to switch the pom.xml dependency to
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
It works with the same Bean code above. That's what I call transparent. However due to a number of reasons I had to use OkHttp3.
I've looked at the official doc of OkHttp3 but it doesn't give a specific instruction. This is ironic, because if it's truly transparent I shouldn't need to do anything.
If anyone knows any details, please help. Appreicated!
