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refactor: ZIP-Download in AdminCreateInvoicesView auf StreamResource umgestellt

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Statt Base64-Data-URL per executeJs wird das ZIP nun wie in InvoicesView
als StreamResource registriert und heruntergeladen — robuster bei großen
Sammel-ZIPs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Sven
2026-07-17 10:39:09 +02:00
co-authored by Claude Fable 5
parent c68410c070
commit 1741ccc67a
1 changed files with 10 additions and 5 deletions
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backend/src/main/java/de/assecutor/votianlt/pages/view/AdminCreateInvoicesView.java
+10 -5
View File
@@ -1,5 +1,6 @@
package de.assecutor.votianlt.pages.view; package de.assecutor.votianlt.pages.view;
import com.vaadin.flow.component.UI;
import com.vaadin.flow.component.button.Button; import com.vaadin.flow.component.button.Button;
import com.vaadin.flow.component.button.ButtonVariant; import com.vaadin.flow.component.button.ButtonVariant;
import com.vaadin.flow.component.dialog.Dialog; import com.vaadin.flow.component.dialog.Dialog;
@@ -19,6 +20,8 @@ import com.vaadin.flow.component.textfield.NumberField;
import com.vaadin.flow.component.textfield.TextField; import com.vaadin.flow.component.textfield.TextField;
import com.vaadin.flow.router.HasDynamicTitle; import com.vaadin.flow.router.HasDynamicTitle;
import com.vaadin.flow.router.Route; import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.StreamRegistration;
import com.vaadin.flow.server.StreamResource;
import com.vaadin.flow.theme.lumo.LumoUtility; import com.vaadin.flow.theme.lumo.LumoUtility;
import de.assecutor.votianlt.model.PriceTable; import de.assecutor.votianlt.model.PriceTable;
import de.assecutor.votianlt.model.User; import de.assecutor.votianlt.model.User;
@@ -40,6 +43,7 @@ import de.assecutor.votianlt.util.DateTimeFormatUtil;
import jakarta.annotation.security.RolesAllowed; import jakarta.annotation.security.RolesAllowed;
import lombok.extern.slf4j.Slf4j; import lombok.extern.slf4j.Slf4j;
import java.io.ByteArrayInputStream;
import java.math.BigDecimal; import java.math.BigDecimal;
import java.math.RoundingMode; import java.math.RoundingMode;
import java.time.LocalDate; import java.time.LocalDate;
@@ -839,11 +843,12 @@ public class AdminCreateInvoicesView extends Main implements HasDynamicTitle {
/** Offers the given ZIP bytes as browser download. */ /** Offers the given ZIP bytes as browser download. */
private void triggerZipDownload(byte[] zip, String fileName) { private void triggerZipDownload(byte[] zip, String fileName) {
String base64Zip = Base64.getEncoder().encodeToString(zip); StreamResource resource = new StreamResource(fileName, () -> new ByteArrayInputStream(zip));
getElement().executeJs("const link = document.createElement('a');" resource.setContentType("application/zip");
+ "link.href = 'data:application/zip;base64," + base64Zip + "';" + "link.download = '" resource.setCacheTime(0);
+ fileName.replace("'", "") + "';" StreamRegistration registration = UI.getCurrent().getSession().getResourceRegistry()
+ "document.body.appendChild(link); link.click(); document.body.removeChild(link);"); .registerResource(resource);
UI.getCurrent().getPage().open(registration.getResourceUri().toString());
} }
/** /**