[GitHub] [incubator-shenyu] justlemontree opened a new issue, #3338: ModifyResponsePlugin not support response with the Content-Type of application/json;charset=UTF-8

[GitBox]

justlemontree opened a new issue, #3338:
URL: https://github.com/apache/incubator-shenyu/issues/3338

   ### Is there an existing issue for this?
   
   - [X] I have searched the existing issues
   
   ### Current Behavior
   
   a backend service response with the Content-Type of 
application/json;charset=UTF-8, will cause the  an error in 
ModifyResponsePlugin， response with  the Content-Type of application/json is 
normal.
   
    
   private byte[] modifyBody(final byte[] responseBody) {
               try {
                   String bodyStr = modifyBody(new String(responseBody, 
StandardCharsets.UTF_8));
                   LOG.info("the body string {}", bodyStr);
                   return bodyStr.getBytes(StandardCharsets.UTF_8);
               } catch (Exception e) {
                   LOG.error("modify response error", e);
                   throw new ShenyuException(String.format("response modify 
failure. %s", e.getLocalizedMessage()));
               }
           }
   
   
          String bodyStr = modifyBody(new String(responseBody, 
StandardCharsets.UTF_8));  直接抛异常
   
   ### Expected Behavior
   
   ModifyResponsePlugin support response with the Content-Type of 
application/json;charset=UTF-8
   
   ### Steps To Reproduce
   
   _No response_
   
   ### Environment
   
   ```markdown
   ShenYu version(s):2.4.2
   ```
   
   
   ### Debug logs
   
   2022-04-26 15:41:59 [reactor-http-nio-2] ERROR 
org.apache.shenyu.plugin.modify.response.ModifyResponsePlugin - modify response 
error
   com.jayway.jsonpath.InvalidModificationException: Invalid put operation. $ 
is not a map
        at 
com.jayway.jsonpath.internal.PathRef$RootPathRef.put(PathRef.java:136)
        at com.jayway.jsonpath.JsonPath.put(JsonPath.java:304)
        at com.jayway.jsonpath.internal.JsonContext.put(JsonContext.java:221)
        at com.jayway.jsonpath.internal.JsonContext.put(JsonContext.java:199)
        at 
org.apache.shenyu.plugin.modify.response.ModifyResponsePlugin$ModifyResponseDecorator.lambda$modifyBody$3
   
   ### Anything else?
   
   please help me ,thank you 


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