调用端

dyyx.util.WebUtil.run_hello

String name = request.getParameter("name");
if(StringUtils.isBlank(name)) {
    name = "dyyx";
}
            
RpcContext.getContext().getAttachments().put("name", name);
            
context.put("attachment_name", RpcContext.getContext().getAttachments().get("name"));
            
context.put("isConsumerSide", RpcContext.getContext().isConsumerSide());
context.put("isProviderSide", RpcContext.getContext().isProviderSide());
context.put("remoteAddressString", RpcContext.getContext().getRemoteAddressString());
context.put("remotePort", RpcContext.getContext().getRemotePort());
context.put("remoteHostName", RpcContext.getContext().getRemoteHostName());
// context.put("application", RpcContext.getContext().getUrl().getParameter("application"));

String result = getService().hello(name);
            
String attachment_name_after_invoke = RpcContext.getContext().getAttachments().get("name");
if(attachment_name_after_invoke==null) {
    attachment_name_after_invoke = "NULL";
}
context.put("attachment_name_after_invoke", attachment_name_after_invoke);


服务端

dyyx.HelloServiceImpl.hello(String)


public String hello(String name) {
    Map< String,Object> context = new HashMap< >();
    context.put("attachment_name", RpcContext.getContext().getAttachments().get("name"));
        
    context.put("isConsumerSide", RpcContext.getContext().isConsumerSide());
    context.put("isProviderSide", RpcContext.getContext().isProviderSide());
    context.put("remoteAddressString", RpcContext.getContext().getRemoteAddressString());
    context.put("remotePort", RpcContext.getContext().getRemotePort());
    context.put("remoteHostName", RpcContext.getContext().getRemoteHostName());
    // context.put("application", RpcContext.getContext().getUrl().getParameter("application"));
   
    String info = "hello,"+name+","+LocalDateTime.now()+",context="+context;
    return info;
}



完整代码
https://gitee.com/dyyx/dubbodemo/blob/master/dubbo-hello-provider/src/main/java/dyyx/HelloServiceImpl.java

https://gitee.com/dyyx/dubbodemo/blob/master/dubbo-hello-consumer/src/main/java/dyyx/util/WebUtil.java

    

 dubbo 分布式追踪 traceId 传递要点 
 dubbo之RpcContext  
 dubbo实例