How to solve the problem with Gson?

B

bychok3002016-11-22 13:28:41

Java

bychok300, 2016-11-22 13:28:41

That's when I create an instance of the gson class and shove my collection there, a buffer overflow pops up

try{
        	//конектимся
            Document doc = Jsoup.connect("http://" + parserParam).get();
            //добавляем в список из элементов все что лежит между тегами <html> </html>
            List<Element> elements = doc.select("html");
            //после вот этого кусочка
            Gson gson = new GsonBuilder().create();
            gson.toJson(elements);
            
           
            /***Если стоит галка - текст
             *  выводим на клиента все что спарсилось в плэйн тексте
             *  иначе, выводим просто в хтмл
             * 	*/
            if (toText != null){
            	out.print("<plaintext>" +elements + "</plaintext>");

            }
            else{
            	//System.out.println(jsonOut);
            	out.print(elements);  
            }
        }
        //перехватываем исключение если че
        catch(Exception e){
        	e.printStackTrace();
        	out.print("ERROR, possible somthing wrong with your query");
        }

here is the exception

java.lang.StackOverflowError
  com.google.gson.internal.$Gson$Types.equals($Gson$Types.java:159)
  com.google.gson.reflect.TypeToken.equals(TypeToken.java:284)
  java.util.HashMap.getNode(HashMap.java:571)
  java.util.HashMap.get(HashMap.java:556)
  java.util.Collections$SynchronizedMap.get(Collections.java:2584)
  com.google.gson.Gson.getAdapter(Gson.java:335)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:55)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:99)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:219)
  com.google.gson.Gson$FutureTypeAdapter.write(Gson.java:899)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
  com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:96)
  com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:60)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:99)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:219)
  com.google.gson.Gson$FutureTypeAdapter.write(Gson.java:899)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:99)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:219)
  com.google.gson.Gson$FutureTypeAdapter.write(Gson.java:899)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
  com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:96)
  com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:60)
  com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
  com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:99)

Google didn't help me solve this problem.

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1 answer(s)

A

al_gon, 2016-11-22
@bychok300

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

public class EntryPoint {

  public static void main(final String args[]) {

    final String fileName = "output.html";
    final String url = "https://mail.ru/";
    try (final BufferedWriter writer = new BufferedWriter(new FileWriter(fileName))) {
      final Document doc = Jsoup.connect(url).get();
      writer.write(doc.outerHtml());
    } catch (final IOException e) {
      // Error handling
    }
  }
}