@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
ServletOutputStream os = resp.getOutputStream();
Person[] persons = personService.getAll();
os.println("<html><body>");
os.println("<h2>Persons</h2>");
os.println("<table>");
os.println("<tr><th>Id</th><th>Name</th><th>URL</th></tr>");
for (Person person : persons) {
String url = (person.getUrl() == null) ? "" : person.getUrl();
os.println(
String.format(
"<tr><td>%s</td><td>%s</td><td>%s</td></tr>", person.getId(), person.getName(), url));
}
os.println("</table>");
os.println("<h2>Add Person</h2>");
os.println("<form name='input' action='/personui' method='post'>");
os.println("<table>");
os.println("<tr><td>Id</td><td><input type='text' name='id'/></td></tr>");
os.println("<tr><td>Name</td><td><input type='text' name='name'/></td></tr>");
os.println("<tr><td>Homepage URL</td><td><input type='text' name='url'/></td></tr>");
os.println("<tr><td colspan='2'><input type='submit' value='Add'/></td></tr>");
os.println("</form>");
os.println("</table>");
os.println("</body></html>");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
String id = req.getParameter("id");
String name = req.getParameter("name");
String url = req.getParameter("url");
Person person = new Person();
person.setId(id);
person.setName(name);
person.setUrl(url);
personService.addPerson(person);
resp.sendRedirect("/personui");
}