spring RestTemplate Setting headers on Spring RestTemplate request
Example
The exchange methods of RestTemplate allows you specify a HttpEntity that will be written to the request when execute the method. You can add headers (such user agent, referrer...) to this entity:
public void testHeader(final RestTemplate restTemplate){
//Set the headers you need send
final HttpHeaders headers = new HttpHeaders();
headers.set("User-Agent", "eltabo");
//Create a new HttpEntity
final HttpEntity<String> entity = new HttpEntity<String>(headers);
//Execute the method writing your HttpEntity to the request
ResponseEntity<Map> response = restTemplate.exchange("https://httpbin.org/user-agent", HttpMethod.GET, entity, Map.class);
System.out.println(response.getBody());
}
Also you can add an interceptor to your RestTemplate if you need to add the same headers to multiple requests:
public void testHeader2(final RestTemplate restTemplate){
//Add a ClientHttpRequestInterceptor to the RestTemplate
restTemplate.getInterceptors().add(new ClientHttpRequestInterceptor(){
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
request.getHeaders().set("User-Agent", "eltabo");//Set the header for each request
return execution.execute(request, body);
}
});
ResponseEntity<Map> response = restTemplate.getForEntity("https://httpbin.org/user-agent", Map.class);
System.out.println(response.getBody());
ResponseEntity<Map> response2 = restTemplate.getForEntity("https://httpbin.org/headers", Map.class);
System.out.println(response2.getBody());
}
