From 2aa59ba46563a01d2412f98d50ab686fab5ef43c Mon Sep 17 00:00:00 2001
From: Gwendal Margely <gwendal.margely.etu@univ-lille.fr>
Date: Thu, 14 Mar 2024 15:55:42 +0100
Subject: [PATCH] Adding the first state of Ingredient WebServlet
---
...DAOIngredients.java => IngredientDAO.java} | 5 +-
WEB-INF/src/Servlets/IngredientServlet.java | 128 ++++++++++++++++++
2 files changed, 132 insertions(+), 1 deletion(-)
rename WEB-INF/src/DAO/{DAOIngredients.java => IngredientDAO.java} (97%)
create mode 100644 WEB-INF/src/Servlets/IngredientServlet.java
diff --git a/WEB-INF/src/DAO/DAOIngredients.java b/WEB-INF/src/DAO/IngredientDAO.java
similarity index 97%
rename from WEB-INF/src/DAO/DAOIngredients.java
rename to WEB-INF/src/DAO/IngredientDAO.java
index 2a42631..da9dc87 100644
--- a/WEB-INF/src/DAO/DAOIngredients.java
+++ b/WEB-INF/src/DAO/IngredientDAO.java
@@ -5,7 +5,7 @@ import java.sql.*;
import java.util.ArrayList;
import java.util.List;
-public class DAOIngredients {
+public class IngredientDAO {
// JDBC URL, username, and password of PostgresSQL server
private static final String url = "jdbc:postgresql://"; //CHANGE URL
private static final String user = "gwendalmargelyetu";
@@ -85,4 +85,7 @@ public class DAOIngredients {
close();
return ingredient;
}
+
+ public void deleteIngredient(int id) {
+ }
}
diff --git a/WEB-INF/src/Servlets/IngredientServlet.java b/WEB-INF/src/Servlets/IngredientServlet.java
new file mode 100644
index 0000000..0df5ab9
--- /dev/null
+++ b/WEB-INF/src/Servlets/IngredientServlet.java
@@ -0,0 +1,128 @@
+package Servlets;
+
+
+
+import DAO.IngredientDAO;
+import POJO.Ingredient;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+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;
+import java.util.List;
+
+@WebServlet("/ingredients/*")
+public class IngredientServlet extends HttpServlet {
+ private IngredientDAO ingredientDAO;
+ private ObjectMapper objectMapper;
+
+ @Override
+ public void init() throws ServletException {
+ ingredientDAO = new IngredientDAO();
+ objectMapper = new ObjectMapper();
+ }
+
+ @Override
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ String pathInfo = req.getPathInfo();
+ if (pathInfo == null || pathInfo.equals("/")) {
+ // Get all ingredients
+ try {
+ List<Ingredient> ingredients = ingredientDAO.getAllIngredients();
+ resp.setContentType("application/json");
+ resp.getWriter().write(objectMapper.writeValueAsString(ingredients));
+ } catch (Exception e) {
+ resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ resp.getWriter().write("Error fetching ingredients: " + e.getMessage());
+ }
+ } else {
+ String[] pathParts = pathInfo.split("/");
+ if (pathParts.length == 2) {
+ // Get ingredient by id
+ try {
+ int id = Integer.parseInt(pathParts[1]);
+ Ingredient ingredient = ingredientDAO.getIngredient(id);
+ if (ingredient != null) {
+ resp.setContentType("application/json");
+ resp.getWriter().write(objectMapper.writeValueAsString(ingredient));
+ } else {
+ resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
+ resp.getWriter().write("Ingredient not found with id: " + id);
+ }
+ } catch (NumberFormatException e) {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid ingredient id: " + pathParts[1]);
+ } catch (Exception e) {
+ resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ resp.getWriter().write("Error fetching ingredient: " + e.getMessage());
+ }
+ } else if (pathParts.length == 3 && pathParts[2].equals("name")) {
+ // Get ingredient name by id
+ try {
+ int id = Integer.parseInt(pathParts[1]);
+ Ingredient ingredient = ingredientDAO.getIngredient(id);
+ if (ingredient != null) {
+ resp.setContentType("application/json");
+ resp.getWriter().write(objectMapper.writeValueAsString(ingredient.getName()));
+ } else {
+ resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
+ resp.getWriter().write("Ingredient not found with id: " + id);
+ }
+ } catch (NumberFormatException e) {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid ingredient id: " + pathParts[1]);
+ } catch (Exception e) {
+ resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ resp.getWriter().write("Error fetching ingredient name: " + e.getMessage());
+ }
+ } else {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid endpoint");
+ }
+ }
+ }
+
+ @Override
+ protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ // Add new ingredient
+ try {
+ Ingredient ingredient = objectMapper.readValue(req.getInputStream(), Ingredient.class);
+ IngredientDAO.insertIngredient(ingredient);
+ resp.setStatus(HttpServletResponse.SC_CREATED);
+ } catch (Exception e) {
+ resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ resp.getWriter().write("Error adding ingredient: " + e.getMessage());
+ }
+ }
+
+ @Override
+ protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ String pathInfo = req.getPathInfo();
+ if (pathInfo != null && !pathInfo.equals("/")) {
+ String[] pathParts = pathInfo.split("/");
+ if (pathParts.length == 2) {
+ // Delete ingredient by id
+ try {
+ int id = Integer.parseInt(pathParts[1]);
+ ingredientDAO.deleteIngredient(id); // Create this method
+ resp.setStatus(HttpServletResponse.SC_OK);
+ } catch (NumberFormatException e) {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid ingredient id: " + pathParts[1]);
+ } catch (Exception e) {
+ resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
+ resp.getWriter().write("Error deleting ingredient: " + e.getMessage());
+ }
+ } else {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid endpoint");
+ }
+ } else {
+ resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+ resp.getWriter().write("Invalid endpoint");
+ }
+ }
+}
--
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