content: package com.weiguanjishu.interceptor;
  
  import io.seata.core.context.RootContext;
  import org.apache.commons.lang.StringUtils;
  import org.springframework.http.HttpRequest;
  import org.springframework.http.client.ClientHttpRequestExecution;
  import org.springframework.http.client.ClientHttpRequestInterceptor;
  import org.springframework.http.client.ClientHttpResponse;
  import org.springframework.http.client.support.HttpRequestWrapper;
  
  import java.io.IOException;
  
  public class SeataRestTemplateInterceptor implements ClientHttpRequestInterceptor {
      public SeataRestTemplateInterceptor() {
      }
  
      @Override
      public ClientHttpResponse intercept(HttpRequest httpRequest, byte[] bytes, ClientHttpRequestExecution clientHttpRequestExecution) throws IOException {
          HttpRequestWrapper requestWrapper = new HttpRequestWrapper(httpRequest);
          String xid = RootContext.getXID();
          if (StringUtils.isNotEmpty(xid)) {
              requestWrapper.getHeaders().add(RootContext.KEY_XID, xid);
          }
  
          return clientHttpRequestExecution.execute(requestWrapper, bytes);
      }
  }
  