Format PDF - pierwsze kroki

PC27-RestSerwer/src/main/java/sklep/rest/RProductsPdf.java

+package sklep.rest;
+
+import jakarta.ws.rs.*;
+import sklep.db.DBConnection;
+import sklep.db.DBException;
+import sklep.db.ProductDAO;
+import sklep.db.RecordNotFound;
+import sklep.model.Product;
+import sklep.model.ProductList;
+
+@Path("/products.pdf")
+@Produces("application/pdf")
+public class RProductsPdf {
+    @GET
+    public ProductList allProducts() throws DBException {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            return new ProductList(productDAO.readAll());
+        }
+    }
+
+    @GET
+    @Path("/{id}")
+    // przykładowo /api/products.pdf/3
+    public Product oneProduct(@PathParam("id") int productId) throws DBException, RecordNotFound {
+        try(DBConnection db = DBConnection.open()) {
+            ProductDAO productDAO = db.productDAO();
+            return productDAO.findById(productId);
+        }
+    }
+}

PC27-RestSerwer/src/main/java/sklep/rest/ext/PdfWriter.java

+package sklep.rest.ext;
+
+import jakarta.ws.rs.WebApplicationException;
+import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.MultivaluedMap;
+import jakarta.ws.rs.ext.MessageBodyWriter;
+import jakarta.ws.rs.ext.Provider;
+import sklep.model.ProductList;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+
+@Provider
+public class PdfWriter implements MessageBodyWriter<ProductList> {
+
+    @Override
+    public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
+        return true;
+    }
+
+    @Override
+    public void writeTo(ProductList productList, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
+        // to nie jest poprawny PDF, tylko taka ściema
+        entityStream.write("a kuku".getBytes());
+    }
+}