Obsługa różnych formatów w REST

PC24-SklepSoap/src/main/java/sklep/model/Product.java

@@ -62,7 +62,10 @@ public class Product {
         return description;
     }
 
-
+    public void setDescription(String description) {
+        this.description = description;
+    }
+    
     @Override
     public int hashCode() {
         return Objects.hash(description, price, vat, productId, productName);

PC26-RestSerwer/src/main/java/sklep/model/Product.java

@@ -5,7 +5,9 @@ import java.util.Objects;
 
 import jakarta.xml.bind.annotation.XmlAttribute;
 import jakarta.xml.bind.annotation.XmlElement;
+import jakarta.xml.bind.annotation.XmlRootElement;
 
+@XmlRootElement
 public class Product {
     @XmlAttribute(name="id")
     private Integer productId;
@@ -62,7 +64,10 @@ public class Product {
         return description;
     }
 
-
+    public void setDescription(String description) {
+        this.description = description;
+    }
+    
     @Override
     public int hashCode() {
         return Objects.hash(description, price, vat, productId, productName);

PC26-RestSerwer/src/main/java/sklep/photo/PhotoUtil.java

@@ -53,10 +53,10 @@ public class PhotoUtil {
             e.printStackTrace();
         }
     }
+
     private static Path getPath(int productId) throws DBException {
         String dir = DBSettings.load().getProperty("photo_dir");
         String fileName = productId + EXT;
         return Paths.get(dir, fileName);
     }
-    
 }

PC26-RestSerwer/src/main/java/sklep/rest/RProduct.java

@@ -21,7 +21,7 @@ import sklep.photo.PhotoUtil;
 @Path("/products")
 public class RProduct {
     @GET
-    @Produces("application/json")
+    @Produces({"application/json", "application/xml", "text/plain"})
     public List<Product> readAllProducts() throws DBException {
         try(DBConnection db = DBConnection.open()) {
             ProductDAO productDAO = db.productDAO();
@@ -31,7 +31,7 @@ public class RProduct {
     
     @GET
     @Path("/{id}")
-    @Produces("application/json")
+    @Produces({"application/json", "application/xml", "text/plain"})
     public Product readOneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
         try(DBConnection db = DBConnection.open()) {
             ProductDAO productDAO = db.productDAO();
@@ -45,6 +45,7 @@ public class RProduct {
     // czyli nie wiemy, pod adresem zapisze się nowy produkt.
     // POST potrafi "dodać rekord do katalogu".
     @POST
+    @Consumes({"application/json", "application/xml"})
     public void saveProduct(Product product) throws DBException {
         try(DBConnection db = DBConnection.open()) {
             ProductDAO productDAO = db.productDAO();
@@ -57,7 +58,7 @@ public class RProduct {
     // do poszczególnych pól obiektu (aby nie transferować całego rekordu, gdy potrzebna tylko jedna informacja)
     @GET
     @Path("/{id}/price")
-    @Produces("application/json")
+    @Produces({"application/json", "text/plain"})
     public BigDecimal getPrice(@PathParam("id") int productId) throws DBException, RecordNotFound {
         return readOneProduct(productId).getPrice();
     }
@@ -105,16 +106,16 @@ public class RProduct {
 
     @GET
     @Path("/{id}/photo")
-    // przykładowo /api/products/3/photo
+    // przykładowo /products/3/photo
     @Produces("image/jpeg")
     public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
         return PhotoUtil.readBytes(productId);
     }
 
-//    @PUT
-//    @Path("/{id}/photo")
-//    @Consumes("image/jpeg")
-//    public void writePhoto(@PathParam("id") int productId, byte[] bajty) {
-//        PhotoUtil.writeBytes(productId, bajty);
-//    }
+    @PUT
+    @Path("/{id}/photo")
+    @Consumes("image/jpeg")
+    public void writePhoto(@PathParam("id") int productId, byte[] bajty) {
+        PhotoUtil.writeBytes(productId, bajty);
+    }
 }

PC26-RestSerwer/src/main/java/sklep/rest/RProductJSON.java

+package sklep.rest;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+import jakarta.ws.rs.Consumes;
+import jakarta.ws.rs.DELETE;
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.POST;
+import jakarta.ws.rs.PUT;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.Produces;
+import sklep.db.DBConnection;
+import sklep.db.DBException;
+import sklep.db.ProductDAO;
+import sklep.db.RecordNotFound;
+import sklep.model.Product;
+import sklep.photo.PhotoUtil;
+
+@Path("/products.json")
+// na poziomie klasy można podać domyślne wartości Produces i Consumes dla wszystkich metod
+@Produces("application/json")
+@Consumes("application/json")
+public class RProductJSON {
+    @GET
+    public List<Product> readAllProducts() throws DBException {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            return productDAO.readAll();
+        }
+    }
+    
+    @GET
+    @Path("/{id}")
+    public Product readOneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            return productDAO.findById(productId);
+        }
+    }
+
+    @POST
+    public void saveProduct(Product product) throws DBException {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            productDAO.save(product);
+            db.commit();
+        }
+    }
+    
+    @GET
+    @Path("/{id}/price")
+    public BigDecimal getPrice(@PathParam("id") int productId) throws DBException, RecordNotFound {
+        return readOneProduct(productId).getPrice();
+    }
+
+    @PUT
+    @Path("/{id}/price")
+    public void setPrice(@PathParam("id") int productId, BigDecimal newPrice) throws DBException, RecordNotFound {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            Product product = productDAO.findById(productId);
+            product.setPrice(newPrice);
+            productDAO.save(product);
+            db.commit();
+        }
+    }
+
+    @DELETE
+    @Path("/{id}")
+    public void usun(@PathParam("id") int productId) throws DBException, RecordNotFound {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            productDAO.delete(productId);
+            db.commit();
+        }
+    }
+
+    // Jeśli na poziomie metody użyjemy adnotacji @Produces lub @Consumes,
+    // to ustawienie metody nadpisuje ogólne ustawienie dla klasy
+    @GET
+    @Path("/{id}/photo")
+    @Produces("image/jpeg")
+    public byte[] getPhoto(@PathParam("id") int productId) throws DBException, RecordNotFound {
+        return PhotoUtil.readBytes(productId);
+    }
+
+    @PUT
+    @Path("/{id}/photo")
+    @Consumes("image/jpeg")
+    public void writePhoto(@PathParam("id") int productId, byte[] bajty) {
+        PhotoUtil.writeBytes(productId, bajty);
+    }
+}