dubbo，隐式传参只会使用一次的问题

importorg.apache.commons.lang3.StringUtils;
importorg.springframework.web.context.request.RequestAttributes;
importorg.springframework.web.context.request.RequestContextHolder;
importjava.util.HashMap;
importjava.util.Map;
/*** 线程局部变量*/publicclassContextUtil {
/*** 创建线程局部变量，并初始化值*/privatestaticThreadLocal<Map<String, String>>contextThreadLocal=ThreadLocal.withInitial(() ->newHashMap<>());
/*** 提供线程局部变量set方法** @param key* @param value*/publicstaticvoidsetValue(Stringkey, Stringvalue) {
Map<String, String>map=getValues();
if (map.containsKey(key)) {
map.replace(key, value);
        } else {
map.put(key, value);
        }
contextThreadLocal.set(map);
    }
/*** 提供线程局部变量get方法** @param key* @return*/publicstaticStringgetValue(Stringkey) {
Map<String, String>map=contextThreadLocal.get();
returnmap.get(key);
    }
/*** 获取所有变量** @return*/publicstaticMap<String, String>getValues() {
returncontextThreadLocal.get();
    }
/*** 删除key** @param key*/publicstaticvoidremove(Stringkey) {
Map<String, String>map=contextThreadLocal.get();
if (map.containsKey(key)) {
map.remove(key);
contextThreadLocal.set(map);
        }
    }
/*** 清除所有变量*/publicstaticvoidclear() {
contextThreadLocal.set(newHashMap<>());
contextThreadLocal.remove();
    }
/*** 设置 RequestContextHolder Attributes** @param key* @param value*/publicstaticvoidsetRequestValue(Stringkey, Stringvalue) {
try {
RequestContextHolder.currentRequestAttributes().setAttribute(
key,
value,
RequestAttributes.SCOPE_REQUEST);
        } catch (Exceptionex) {
        }
    }
/*** 获取 RequestContextHolder Attributes** @param key* @return*/publicstaticStringgetRequestValue(Stringkey) {
try {
if (!StringUtils.isNotBlank(key)) {
return"";
            }
Object_namespace_obj=RequestContextHolder.currentRequestAttributes().getAttribute(key, RequestAttributes.SCOPE_REQUEST);
if (_namespace_obj!=null) {
return_namespace_obj.toString();
            }
        } finally {
return"";
        }
    }
}