How to replace return value with new value in aop

@ControllerAdvice
public class responAop implements ResponseBodyAdvice {

    @Override
    public boolean supports(MethodParameter methodParameter, Class aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object resBody, MethodParameter arg1, MediaType arg2, Class aClass, ServerHttpRequest req,
                                  ServerHttpResponse resp) {
        String requestUri = req.getURI().getPath();
        Object dataedPermission = null;
        if (requestUri.contains("/test/list")) {//拦截的路径
            dataedPermission = handledata(JSONObject.toJSONString(resBody, SerializerFeature.WriteMapNullValue));

        }
        return dataedPermission;
    }
    private Object handledata (String jsonStr){
        jsonStr = replaceSpecialStr(jsonStr, "money");//money为需要替换的属性
        return jsonStr;
    }
    public static String replaceSpecialStr (String orgStr, String fieldName){
        String beginChar = "\"" + fieldName + "\":";
        String newValue = "\"***\"";
        String newStr = orgStr.replaceAll(beginChar + "([-]{0,1}[0-9.]{1,}(E-8){0,1})", beginChar + newValue);
        return newStr;
    }

}