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Añadir generar reporte excel de los empleados
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Melina Gutierrez 2024-11-25 23:30:27 -04:00
parent b2fc5663fd
commit deb7acc4a4
1 changed files with 47 additions and 0 deletions
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src/main/java/com/primefactorsolutions/views/EmployeesListView.java
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@ -3,15 +3,22 @@ package com.primefactorsolutions.views;
import com.primefactorsolutions.model.Employee;
import com.primefactorsolutions.service.EmployeeService;
import com.vaadin.flow.component.button.Button;
import com.vaadin.flow.component.html.Anchor;
import com.vaadin.flow.router.PageTitle;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.StreamResource;
import com.vaadin.flow.spring.annotation.SpringComponent;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.vaadin.firitin.components.grid.PagingGrid;
import com.vaadin.flow.component.grid.GridSortOrder;
import com.vaadin.flow.data.provider.SortDirection;
import jakarta.annotation.security.PermitAll;
import org.springframework.context.annotation.Scope;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.List;
@SpringComponent
@ -33,9 +40,49 @@ public class EmployeesListView extends BaseView {
private void setupView() {
configureTable();
getCurrentPageLayout().add(createAddEmployeeButton());
getCurrentPageLayout().add(createExportButton());
getCurrentPageLayout().add(table);
}
private Button createExportButton() {
StreamResource excelResource = new StreamResource("employees.xlsx", this::generateExcel);
Anchor downloadLink = new Anchor(excelResource, "Export Employees");
downloadLink.getElement().setAttribute("download", true); // Forzar descarga
return new Button("Export to Excel", e -> getCurrentPageLayout().add(downloadLink));
}
private ByteArrayInputStream generateExcel() {
List<Employee> employees = employeeService.findAllEmployees();
try (Workbook workbook = new XSSFWorkbook(); ByteArrayOutputStream out = new ByteArrayOutputStream()) {
Sheet sheet = workbook.createSheet("Employees");
Row headerRow = sheet.createRow(0);
String[] headers = {"ID", "First Name", "Last Name", "Status", "Team"};
for (int i = 0; i < headers.length; i++) {
Cell cell = headerRow.createCell(i);
cell.setCellValue(headers[i]);
CellStyle style = workbook.createCellStyle();
Font font = workbook.createFont();
font.setBold(true);
style.setFont(font);
cell.setCellStyle(style);
}
int rowIndex = 1;
for (Employee employee : employees) {
Row row = sheet.createRow(rowIndex++);
row.createCell(0).setCellValue(employee.getId().toString());
row.createCell(1).setCellValue(employee.getFirstName());
row.createCell(2).setCellValue(employee.getLastName());
row.createCell(3).setCellValue(employee.getStatus().toString());
row.createCell(4).setCellValue(employee.getTeam().toString());
}
workbook.write(out);
return new ByteArrayInputStream(out.toByteArray());
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
private void configureTable() {
table.setColumns("firstName", "lastName", "status");
addEditButtonColumn("View", this::navigateToEmployeeView);