ThymeleafCategoryServlet

package mk.ukim.finki.wpaud.web.servlet;

import mk.ukim.finki.wpaud.service.CategoryService;
import org.thymeleaf.context.WebContext;
import org.thymeleaf.spring5.SpringTemplateEngine;

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 java.io.IOException;

@WebServlet(name = "thymeleaf-category-servlet" , urlPatterns = "/servlet/thymeleaf/category")
public class ThymeleafCategoryServlet extends HttpServlet {

    private final SpringTemplateEngine springTemplateEngine;
    private final CategoryService categoryService;

    public ThymeleafCategoryServlet(SpringTemplateEngine springTemplateEngine, CategoryService categoryService) {
        this.springTemplateEngine = springTemplateEngine;
        this.categoryService = categoryService;
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        WebContext context=new WebContext(req,resp, req.getServletContext());
        context.setVariable("ipAddress",req.getRemoteAddr());
        context.setVariable("clientAgent",req.getHeader("User-Agent"));
        context.setVariable("categories",this.categoryService.listCategories());
        this.springTemplateEngine.process("categories.html",context,resp.getWriter());
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String categoryName=(String)req.getParameter("name");
        String categoryDec=(String) req.getParameter("description");
        categoryService.create(categoryName,categoryDec);
        resp.sendRedirect("/servlet/thymeleaf/category");
    }
}