我们可以通过URLConnection传递多少数据。

Question

I am passing 10 students information from one Application to Other application in json format.I have to send 25 lacs studends information from one application to other application. I want to know, how much size of data i can send ? how many students i can send in json format.?
Below is code from sender application.

    JSONObject jsonObject = new JSONObject();
    JSONArray jArray = new JSONArray();
    try {
        for (Student student : listStudent) {        
            JSONObject studentJSON = new JSONObject();
            studentJSON.put("First Name", student.getFirstName());
            studentJSON.put("Last Name", student.getLastName());
            jArray.put(studentJSON);
        }
        jsonObject.put("StudentArray", jArray);
        response.setContentType("application/json");
        response.getWriter().write(jsonObject.toString());
    } catch (IOException e) {
        e.printStackTrace();
    }

Below is code from receiver application.

     URL url = new URL("http:"//xyz.com);
     BufferedReader reader = new BufferedReader(newInputStreamReader(url.openStream()));
     JSONObject object = null ;
     String line=null;
     while ((line = reader.readLine()) != null) 
     {
       object= new JSONObject(line);
     }

Answer 1

URLConnection supports the HTTP Specification for HTTP connections. I haven't really seen a max number of bytes that can be transferred via HTTP, but the size must match the header Content-Length if present. Otherwise bytes will continue to be read until the connection is closed.

URLConnection treats the value of Content-Length as an int in Java 1.6 and earlier or a long in Java 1.7 and later, which would suggest that the maximum supported number of bytes in the body would be 2^31-1 bytes or 2^63-1 bytes, respectively, so long as Content-Length is being set.