RestTemplate通过拦截器统一添加token

RestTemplate通过HeaderRequestInterceptor拦截器统一添加token

@Component
public class HeaderRequestInterceptor implements ClientHttpRequestInterceptor {
    @Override
    public ClientHttpResponse intercept(HttpRequest httpRequest, byte[] body, ClientHttpRequestExecution clientHttpRequestExecution) throws IOException {
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();
        String auth = request.getHeader("Authorization");
        String accessToken = request.getParameter("access_token");
        List authorizations = httpRequest.getHeaders().get("Authorization");
        String authorization = "";
        if (accessToken != null) {
            authorization = "bearer " + accessToken;
        } else if (auth != null) {
            authorization = auth;
        } else if (authorizations != null) {
            authorization = "bearer " + authorizations.get(0);
        }
        HttpHeaders headers = httpRequest.getHeaders();
        headers.add("Authorization", authorization);
        return clientHttpRequestExecution.execute(httpRequest, body);
    }

}

 	@Bean("restTemplate")
    @LoadBalanced
    public RestTemplate getRestTemplate() {
        RestTemplate restTemplate = new RestTemplate(createFactory());
        List> converterList = restTemplate.getMessageConverters();

        // 重新设置StringHttpMessageConverter字符集为UTF-8，解决中文乱码问题
        HttpMessageConverter converterTarget = null;
        for (HttpMessageConverter item : converterList) {
            if (StringHttpMessageConverter.class == item.getClass()) {
                converterTarget = item;
                break;
            }
        }
        if (null != converterTarget) {
            converterList.remove(converterTarget);
        }
        converterList.add(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
        **//拦截器统一添加token**
        restTemplate.setInterceptors(Collections.singletonList(headerRequestInterceptor));
        return restTemplate;
    }