br.inpe.lac.projetoalunoseorientadoresinpe2016.controller.Controller.java Source code

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Here is the source code for br.inpe.lac.projetoalunoseorientadoresinpe2016.controller.Controller.java

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package br.inpe.lac.projetoalunoseorientadoresinpe2016.controller;

import com.google.gson.Gson;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientOptions;
import com.mongodb.ServerAddress;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import java.util.ArrayList;
import java.util.List;
import org.bson.Document;

/**
 *https://www.youtube.com/watch?v=L51rXE-78kM
 * https://www.youtube.com/watch?v=5J1LLfkkuvo
 * @author abraao
 */
@WebServlet(name = "Controller", urlPatterns = { "/pessoas" })
public class Controller extends HttpServlet {

    public String getAllPersons() throws Exception {
        MongoClientOptions options = MongoClientOptions.builder().connectionsPerHost(100).build();
        MongoClient mongoClient = new MongoClient(new ServerAddress(), options);
        MongoDatabase my_db = mongoClient.getDatabase("alunos_e_orientadores_inpe");
        MongoCollection<Document> pessoas = my_db.getCollection("pessoas");
        List<Document> list = pessoas.find().into(new ArrayList<Document>());
        return new Gson().toJson(list);
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println(getAllPersons());
        } catch (Exception e) {
            out.println("Error: " + e.getMessage());
        } finally {
            out.close();
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }

}