@RestController
public class TestController
{
  @RequestMapping(value = "testPost", method = RequestMethod.POST)
  public ResponseBean testPost(@RequestBody RequestBean requestBean)
  {
    ResponseBean responseBean = new ResponseBean();
    responseBean.setRetCode("0000");
    responseBean.setRetMsg("succ");

    return responseBean;
  }
}

    //請求地址
    String url = "http://localhost:8080/testPost";
    //入?yún)?
    RequestBean requestBean = new RequestBean();
    requestBean.setTest1("1");
    requestBean.setTest2("2");
    requestBean.setTest3("3");

    RestTemplate restTemplate = new RestTemplate();
    ResponseBean responseBean = restTemplate.postForObject(url, requestBean, ResponseBean.class);

    RestTemplate restTemplate = new RestTemplate();
    //獲取RestTemplate默認(rèn)配置好的所有轉(zhuǎn)換器
    List<HttpMessageConverter<?>> messageConverters = restTemplate.getMessageConverters();
    //默認(rèn)的MappingJackson2HttpMessageConverter在第7個 先把它移除掉
    messageConverters.remove(6);
    //添加上GSON的轉(zhuǎn)換器
    messageConverters.add(6, new GsonHttpMessageConverter());

    //生成一個設(shè)置了連接超時時間、請求超時時間、異常最大重試次數(shù)的httpClient
    RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(10000).setConnectTimeout(10000).setSocketTimeout(30000).build();
    HttpClientBuilder builder = HttpClientBuilder.create().setDefaultRequestConfig(config).setRetryHandler(new DefaultHttpRequestRetryHandler(5, false));
    HttpClient httpClient = builder.build();
    //使用httpClient創(chuàng)建一個ClientHttpRequestFactory的實現(xiàn)
    ClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
     //ClientHttpRequestFactory作為參數(shù)構(gòu)造一個使用作為底層的RestTemplate
    RestTemplate restTemplate = new RestTemplate(requestFactory);

public class TokenInterceptor implements ClientHttpRequestInterceptor
{
  @Override
  public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException
  {
    //請求地址
    String checkTokenUrl = request.getURI().getPath();
    //token有效時間
    int ttTime = (int) (System.currentTimeMillis() / 1000 + 1800);
    //請求方法名 POST、GET等
    String methodName = request.getMethod().name();
    //請求內(nèi)容
    String requestBody = new String(body);
    //生成令牌 此處調(diào)用一個自己寫的方法，有興趣的朋友可以自行g(shù)oogle如何使用ak/sk生成token，此方法跟本教程無關(guān)，就不貼出來了
    String token = TokenHelper.generateToken(checkTokenUrl, ttTime, methodName, requestBody);
    //將令牌放入請求header中
    request.getHeaders().add("X-Auth-Token",token);

    return execution.execute(request, body);
  }
}

RestTemplate restTemplate = new RestTemplate();
    //向restTemplate中添加自定義的攔截器
    restTemplate.getInterceptors().add(new TokenInterceptor());