Module Server : ajout clss FileUtil, ajout vérif existance fichier dans clss FileStockDao

Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/stock/FileStockDao.java

@@ -1,6 +1,7 @@
 package com.pqt.server.module.stock;
 
 import com.pqt.core.entities.product.Product;
+import com.pqt.server.utils.FileUtil;
 
 import java.io.*;
 import java.util.*;
@@ -82,6 +83,15 @@ public class FileStockDao implements IStockDao {
 
     private Map<Long, Product> load(){
         Map<Long, Product> loadedData = new HashMap<>();
+        try{
+            if(FileUtil.createFileIfNotExist(STOCK_FILE_NAME)){
+                return loadedData;
+            }
+        }catch(IOException e){
+            e.printStackTrace();
+            return loadedData;
+        }
+
         try(FileInputStream fis = new FileInputStream(STOCK_FILE_NAME);
             ObjectInputStream ois = new ObjectInputStream(fis)){
 
@@ -106,6 +116,12 @@ public class FileStockDao implements IStockDao {
     }
 
     private void save(Map<Long, Product> products){
+        try{
+            FileUtil.createFileIfNotExist(STOCK_FILE_NAME);
+        }catch (IOException e){
+            e.printStackTrace();
+            return;
+        }
         try(FileOutputStream fos = new FileOutputStream(STOCK_FILE_NAME);
                 ObjectOutputStream oos = new ObjectOutputStream(fos)){
 

Workspace/server/src/main/WEB-INF/classes/com/pqt/server/utils/FileUtil.java

@@ -0,0 +1,26 @@
+package com.pqt.server.utils;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+public class FileUtil {
+
+    /**
+     * Check if the given file path correspond to an existing file, and create it if it doesn't.
+     *
+     * @param filePath the file path to check
+     *
+     * @return {@code true} if the file has been created, {@code false} if it already existed.
+     * @throws IOException if any IOException happend during this method's execution.
+     */
+    public static boolean createFileIfNotExist(String filePath) throws IOException {
+        Path path = Paths.get(filePath);
+        if(!Files.exists(path)){
+            Files.createFile(path);
+            return true;
+        }
+        return false;
+    }
+}