RestTemplate设置通用header

增长interceptor

public static class UserAgentInterceptor implements ClientHttpRequestInterceptor {

        @Override
        public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
            HttpHeaders headers = request.getHeaders();
            headers.add(HttpHeaders.USER_AGENT, "your agent");
            return execution.execute(request, body);
        }
    }

设置interceptor

@Bean
    public RestTemplate restTemplate() {
        HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();
        httpRequestFactory.setConnectionRequestTimeout(CONN_TIMEOUT_IN_MILLIS);
        httpRequestFactory.setConnectTimeout(CONN_TIMEOUT_IN_MILLIS);
        httpRequestFactory.setReadTimeout(READ_TIMEOUT_IN_MILLIS);

        RestTemplate restTemplate = new RestTemplate();
        restTemplate.getMessageConverters()
                .add(0, new StringHttpMessageConverter(Charset.forName("UTF-8")));
        restTemplate.setInterceptors(Collections.singletonList(new UserAgentInterceptor()));
        return restTemplate;
    }