root/SPARQLBuilderWWW/src/java/org/biohackathon/SPARQLBuilder/www/EPServlet.java @ 221

リビジョン 206, 4.1 KB (コミッタ: atsuko, 10 年 前)

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1/*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6
7package org.biohackathon.SPARQLBuilder.www;
8
9import java.io.IOException;
10import java.io.PrintWriter;
11import javax.servlet.ServletException;
12import javax.servlet.annotation.WebServlet;
13import javax.servlet.http.HttpServlet;
14import javax.servlet.http.HttpServletRequest;
15import javax.servlet.http.HttpServletResponse;
16import javax.servlet.http.HttpSession;
17import org.biohackathon.SPARQLBuilder.OWL.*;
18import javax.json.*;
19
20//import java.io.*;
21
22/**
23 *
24 * @author atsuko
25 */
26@WebServlet(name = "EPServlet", urlPatterns = {"/eplist"})
27public class EPServlet extends HttpServlet {
28
29    private static final String FILENAME = "cdata/";
30   
31    /**
32     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
33     * methods.
34     *
35     * @param request servlet request
36     * @param response servlet response
37     * @throws ServletException if a servlet-specific error occurs
38     * @throws IOException if an I/O error occurs
39     */
40    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
41            throws ServletException, IOException {
42        response.setContentType("text/html;charset=UTF-8");
43        try (PrintWriter out = response.getWriter()) {
44            /* TODO output your page here. You may use following sample code. */
45            out.println("<!DOCTYPE html>");
46            out.println("<html>");
47            out.println("<head>");
48            out.println("<title>Servlet EPServlet</title>");           
49            out.println("</head>");
50            out.println("<body>");
51            out.println("<h1>Servlet EPServlet at " + request.getContextPath() + "</h1>");
52            out.println("</body>");
53            out.println("</html>");
54        }
55    }
56
57    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
58    /**
59     * Handles the HTTP <code>GET</code> method.
60     *
61     * @param request servlet request
62     * @param response servlet response
63     * @throws ServletException if a servlet-specific error occurs
64     * @throws IOException if an I/O error occurs
65     */
66    @Override
67    protected void doGet(HttpServletRequest request, HttpServletResponse response)
68            throws ServletException, IOException {
69        HttpSession session = request.getSession();
70        // Initialize the session
71        session.removeAttribute("qpg");
72        session.removeAttribute("graph");
73        QueryPathGenerator qpg = new QueryPathGenerator();
74
75        response.setContentType("application/json;charset=UTF-8");
76        response.setHeader("Access-Control-Allow-Origin", "*");
77        response.setHeader("Access-Control-Allow-Methods", "GET");
78        response.setHeader("Access-Control-Allow-Headers", request.getHeader("Access-Control-Request-Headers"));
79        response.setHeader("Access-Control-Max-Age", "-1");       
80        PrintWriter out = response.getWriter();
81
82        String[] elist = qpg.getFactory().getEndpointURIList();
83        JsonBuilderFactory jbfactory = Json.createBuilderFactory(null);
84        JsonArrayBuilder jab = jbfactory.createArrayBuilder();
85        for (int i = 0; i < elist.length; i++ ){
86            jab.add(elist[i]);
87        }
88        JsonArray ja = jab.build();
89        out.print(ja);
90        session.setAttribute("qpg", qpg);
91    }
92
93    /**
94     * Handles the HTTP <code>POST</code> method.
95     *
96     * @param request servlet request
97     * @param response servlet response
98     * @throws ServletException if a servlet-specific error occurs
99     * @throws IOException if an I/O error occurs
100     */
101    @Override
102    protected void doPost(HttpServletRequest request, HttpServletResponse response)
103            throws ServletException, IOException {
104        processRequest(request, response);
105    }
106
107    /**
108     * Returns a short description of the servlet.
109     *
110     * @return a String containing servlet description
111     */
112    @Override
113    public String getServletInfo() {
114        return "Short description";
115    }// </editor-fold>
116
117}
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