Is there a better way to Optimize code that takes one value out of a Request body, the data comes in-CodePudding

I have an request object, that contains a huge amount of data. But there is a filter in my code, where I need to take out just one element. At the moment I am Deserializing the whole object, which seems overkill to just get one element

This is part of a zuul filter

import com.netflix.zuul.context.RequestContext;

       RequestContext ct = RequestContext.getCurrentContext();
       HttpServletRequest request = ctx.getRequest();
       ObjectMapper mapper = new ObjectMapper();
       ServletInputStream stream = null;
       try {
            stream = request.getInputStream();
            GetPageRequest page = mapper.readValue(stream,GetPageRequest.class);
            log.info("URL IN BODY " page.getUrl());

It seems over kill to deserialize an entire object to get one element but I cant think of a more efficient and optomized way

CodePudding user response：

At it's simplest the request payload can just be a string so you could read the input as a string and then parse what you want out using a regular expression or an indexOf or whatever suits best?

CodePudding user response：

With thanks to everyone. I created this method. Streamed inputstream into a string Created a JSONObject which takes in and tokenizies the string


 private String getURLFromRequest(ServletInputStream stream) throws IOException, JSONException {
        String requestStr = IOUtils.toString(stream, "UTF-8");
        JSONObject jsonObj = new JSONObject(requestStr);
        return (String) jsonObj.get("url");
    }