dragon-zhang commented on issue #3025:
URL: 
https://github.com/apache/incubator-shenyu/issues/3025#issuecomment-1064834313


   ```java
       protected Mono<Void> doExecute(final ServerWebExchange exchange, final 
ShenyuPluginChain chain, final SelectorData selector, final RuleData rule) {
           Map<String, List<GeneralContextHandle>> generalContextHandleMap = 
GeneralContextPluginDataHandler.CACHED_HANDLE.get().obtainHandle(CacheKeyUtils.INST.getKey(rule));
           Map<String, Map<String, String>> generalContextMap = new HashMap<>();
           HttpHeaders headers = exchange.getRequest().getHeaders();
           generalContextHandleMap.forEach((rpcType, v) -> {
               if (CollectionUtils.isEmpty(v)) {
                   return;
               }
               Map<String, String> generalContextMapWithRpcType = new 
HashMap<>();
               v.forEach(each -> {
                   if (StringUtils.isBlank(each.getGeneralContextType()) || 
StringUtils.isBlank(each.getGeneralContextKey())) {
                       return;
                   }
                   switch (each.getGeneralContextType()) {
                       case Constants.ADD_GENERAL_CONTEXT_TYPE:
                           
generalContextMapWithRpcType.put(each.getGeneralContextKey(), 
each.getGeneralContextValue());
                           break;
                       case Constants.TRANSMIT_HEADER_TO_GENERAL_CONTEXT_TYPE:
                           
generalContextMapWithRpcType.put(StringUtils.isBlank(each.getGeneralContextValue())
 ? each.getGeneralContextKey() : each.getGeneralContextValue(),
                                   //how about change to this ?
                                   
GsonUtils.getInstance().toJson(headers.get(each.getGeneralContextKey())));
                           break;
                       default:
                           break;
                   }
               });
               generalContextMap.put(rpcType, generalContextMapWithRpcType);
           });
           exchange.getAttributes().put(Constants.GENERAL_CONTEXT, 
generalContextMap);
           return chain.execute(exchange);
       }
   ```


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