商品管理画面、重複商品は個数を変更

src/main/java/com/example/repository/ShoesRepository.java

@@ -12,4 +12,9 @@ import com.example.domain.Shoes;
 public interface ShoesRepository extends JpaRepository<Shoes, Integer>{
 	@Query(value = "SELECT * FROM shoes WHERE product_status = ?1 ORDER BY id DESC", nativeQuery = true)
 	public List <Shoes> findAllByStatus(Integer status);
-}
+
+//管理画面で使用
+	@Query(value = "SELECT * FROM shoes WHERE name = ?1 && size = ?2", nativeQuery = true)
+	public Shoes findOneAddStock(String name, Integer size);
+
+}
\ No newline at end of file

src/main/java/com/example/service/ShoesService.java

@@ -49,4 +49,9 @@ public class ShoesService {
 	public List<Shoes> findAllLimitedShoes() {
 	    return shoesRepository.findAllByStatus(1);
 	}
+	
+	//管理画面、重複商品のバリデーション
+	public Shoes findOneAddStock(String name, Integer size) {
+		return shoesRepository.findOneAddStock(name, size);
+	};
 }

src/main/java/com/example/web/ManagementController.java

@@ -57,67 +57,90 @@ public class ManagementController {
 	}
 	
 	//靴の登録処理
-	@PostMapping("addShoes")
-	public String CreateShoes(@Validated ShoesForm form, BindingResult result, MultipartFile multipartFile) throws Exception {
-		if(result.hasErrors()) {
-			return "management";
-		}
-		multipartFile = form.getMultipartFile();
-		Shoes shoes = new Shoes();
-		if (!multipartFile.isEmpty()) {
-			try {
-				// ファイル名をリネイム
-		        File oldFileName = new File(multipartFile.getOriginalFilename());
-		        
-		        //File newFileName = new File(oldFileName + ".jpg");
-		        //oldFileName.renameTo(newFileName);
-		 
-		        // 保存先を定義
-		        String uploadPath = "src/main/resources/static/upload/";
-		        byte[] bytes = multipartFile.getBytes();
-		 
-		        // 指定ファイルへ読み込みファイルを書き込み
-		        BufferedOutputStream stream = new BufferedOutputStream(
-		        		new FileOutputStream(new File(uploadPath + oldFileName)));
-//		        BufferedOutputStream stream = new BufferedOutputStream(
-//		        		new FileOutputStream(new File(uploadPath + newFileName)));
-		        stream.write(bytes);
-		        stream.close();
-		 
-		        // 圧縮
-		        //File input = new File(uploadPath + newFileName);
-		        File input = new File(uploadPath + oldFileName);
-		        BufferedImage image = ImageIO.read(input);
-		        OutputStream os = new FileOutputStream(input);
-		        Iterator<ImageWriter> writers = ImageIO
-		        		.getImageWritersByFormatName("jpg");
-		        ImageWriter writer = (ImageWriter) writers.next();
-		        ImageOutputStream ios = ImageIO.createImageOutputStream(os);
-		        writer.setOutput(ios);
-		        ImageWriteParam param = new JPEGImageWriteParam(null);
-		        param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
-		        param.setCompressionQuality(0.30f);
-		        writer.write(null, new IIOImage(image, null, null), param);
-		        os.close();
-		        ios.close();
-		        writer.dispose();
-		 
-		        // shoes entity に写真の名前を格納する
-		        //shoes.setPhoto(newFileName.toString());
-		        shoes.setPhoto(oldFileName.toString());
-		 
-		    } catch (Exception e) {
-		        System.out.println(e);
-		    }
-		} else {
-			shoes.setPhoto("noimage.jpg");
-		}
-		shoes.setName(form.getName());
-		shoes.setPrice(form.getPrice());
-		shoes.setStock(form.getStock());
-		shoes.setSize(form.getSize());
-		shoes.setProductStatus(form.getProductStatus());
-		shoesService.update(shoes);
+		@PostMapping("addShoes")
+		public String CreateShoes(@Validated ShoesForm form, BindingResult result, MultipartFile multipartFile) throws Exception {
+			if(result.hasErrors()) {
+				return "management";
+			}
+			
+			multipartFile = form.getMultipartFile();
+			System.out.println(multipartFile);
+			
+			//以前に登録されている商品の場合に登録できないバリデーション
+			Shoes sameShoes = shoesService.findOneAddStock(form.getName(), form.getSize());
+			System.out.println(sameShoes);
+			if (!(sameShoes == null)) {
+				Integer sumStock = form.getStock() + sameShoes.getStock(); 
+				if (sumStock >= 10) {
+					sameShoes.setStock(10);
+					shoesService.update(sameShoes);
+				} else {
+					sameShoes.setStock(sumStock);
+					shoesService.update(sameShoes);
+				}			
+			} else {
+				Shoes shoes = new Shoes();
+				if (!multipartFile.isEmpty()) {
+					try {
+						// ファイル名をリネイム
+				        File oldFileName = new File(multipartFile.getOriginalFilename());
+				        
+				        //File newFileName = new File(oldFileName + ".jpg");
+				        //oldFileName.renameTo(newFileName);
+				 
+				        // 保存先を定義
+				        String uploadPath = "src/main/resources/static/upload/";
+				        byte[] bytes = multipartFile.getBytes();
+				 
+				        // 指定ファイルへ読み込みファイルを書き込み
+				        BufferedOutputStream stream = new BufferedOutputStream(
+				        		new FileOutputStream(new File(uploadPath + oldFileName)));
+//				        BufferedOutputStream stream = new BufferedOutputStream(
+//				        		new FileOutputStream(new File(uploadPath + newFileName)));
+				        stream.write(bytes);
+				        stream.close();
+				 
+				        // 圧縮
+				        //File input = new File(uploadPath + newFileName);
+				        File input = new File(uploadPath + oldFileName);
+				        BufferedImage image = ImageIO.read(input);
+				        OutputStream os = new FileOutputStream(input);
+				        Iterator<ImageWriter> writers = ImageIO
+				        		.getImageWritersByFormatName("jpg");
+				        ImageWriter writer = (ImageWriter) writers.next();
+				        ImageOutputStream ios = ImageIO.createImageOutputStream(os);
+				        writer.setOutput(ios);
+				        ImageWriteParam param = new JPEGImageWriteParam(null);
+				        param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
+				        param.setCompressionQuality(0.30f);
+				        writer.write(null, new IIOImage(image, null, null), param);
+				        os.close();
+				        ios.close();
+				        writer.dispose();
+				 
+				        // shoes entity に写真の名前を格納する
+				        //shoes.setPhoto(newFileName.toString());
+				        shoes.setPhoto(oldFileName.toString());
+				 
+				    } catch (Exception e) {
+				        System.out.println(e);
+				    }
+				} else {
+					shoes.setPhoto("noimage.jpg");
+				}
+				
+				
+				shoes.setName(form.getName());
+				shoes.setPrice(form.getPrice());
+				shoes.setStock(form.getStock());
+				shoes.setSize(form.getSize());
+				shoes.setProductStatus(form.getProductStatus());
+				
+				
+				shoesService.update(shoes);
+			
+			}
+		
 		//遷移先 
 		return "redirect:/limited/admin/management";
 	}