Duvida sobre Maven(Dependências Maven)

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>br.com.fjsistemas</groupId>
    <artifactId>fjsistemas</artifactId>
    <name>FJSistemas</name>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <java.version>1.8</java.version>
        <vaadin.version>14.6.3</vaadin.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.5</version>
    </parent>

    <repositories>
        <!-- The order of definitions matters. Explicitly defining central here to make sure it has the highest priority. -->

        <!-- Main Maven repository -->
        <repository>
            <id>central</id>
            <url>https://repo.maven.apache.org/maven2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <!-- Repository used by many Vaadin add-ons -->
        <repository>
            <id>Vaadin Directory</id>
            <url>https://maven.vaadin.com/vaadin-addons</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <!-- Main Maven repository -->
        <pluginRepository>
            <id>central</id>
            <url>https://repo.maven.apache.org/maven2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-bom</artifactId>
                <version>${vaadin.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>com.vaadin</groupId>
            <!-- Replace artifactId with vaadin-core to use only free components -->
            <artifactId>vaadin</artifactId>
            <exclusions>
                <!-- Webjars are only needed when running in Vaadin 13 compatibility mode -->
                <exclusion>
                    <groupId>com.vaadin.webjar</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.webjars.bowergithub.insites</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.webjars.bowergithub.polymer</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.webjars.bowergithub.polymerelements</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.webjars.bowergithub.vaadin</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.webjars.bowergithub.webcomponents</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-spring-boot-starter</artifactId>
            <exclusions>
                <!-- Excluding so that webjars are not included. -->
                <exclusion>
                    <groupId>com.vaadin</groupId>
                    <artifactId>vaadin-core</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-testbench</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Include JUnit 4 support for TestBench and others -->
        <dependency>
            <groupId>org.junit.vintage</groupId>
            <artifactId>junit-vintage-engine</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.hamcrest</groupId>
                    <artifactId>hamcrest-core</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.github.bonigarcia</groupId>
            <artifactId>webdrivermanager</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
        	<groupId>javax.persistence</groupId>
        	<artifactId>javax.persistence-api</artifactId>
        	<version>2.2</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
        	<groupId>org.springframework.boot</groupId>
        	<artifactId>spring-boot-starter-data-jpa</artifactId>
        	<version>2.5.0</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
        	<groupId>org.vaadin</groupId>
        	<artifactId>textfieldformatter</artifactId>
        	<version>5.2.0</version>
        </dependency>
        <dependency>
        	<groupId>mysql</groupId>
        	<artifactId>mysql-connector-java</artifactId>
        	<version>8.0.25</version><!--$NO-MVN-MAN-VER$-->
        </dependency>
        <dependency>
        	<groupId>net.sf.jasperreports</groupId>
        	<artifactId>jasperreports</artifactId>
        	<version>6.17.0</version>
        </dependency>
        <dependency>
        	<groupId>org.vaadin.alejandro</groupId>
        	<artifactId>pdf-browser</artifactId>
        	<version>3.1.0</version>
        </dependency>
    </dependencies>
		 
		 <build>
        <defaultGoal>spring-boot:run</defaultGoal>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!-- Clean build and startup time for Vaadin apps sometimes may exceed
                     the default Spring Boot's 30sec timeout.  -->
                <configuration>
                    <wait>500</wait>
                    <maxAttempts>240</maxAttempts>
                </configuration>
            </plugin>

            <!--
                Take care of synchronizing java dependencies and imports in
                package.json and main.js files.
                It also creates webpack.config.js if not exists yet.
            -->
            <plugin>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-maven-plugin</artifactId>
                <version>${vaadin.version}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>prepare-frontend</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <profile>
            <!-- Production mode is activated using -Pproduction -->
            <id>production</id>
            <build>
                <plugins>
                    <plugin>
                        <groupId>com.vaadin</groupId>
                        <artifactId>vaadin-maven-plugin</artifactId>
                        <version>${vaadin.version}</version>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>build-frontend</goal>
                                </goals>
                                <phase>compile</phase>
                            </execution>
                        </executions>
                        <configuration>
                            <productionMode>true</productionMode>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
        </profile>

        <profile>
            <id>it</id>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-maven-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>start-spring-boot</id>
                                <phase>pre-integration-test</phase>
                                <goals>
                                    <goal>start</goal>
                                </goals>
                            </execution>
                            <execution>
                                <id>stop-spring-boot</id>
                                <phase>post-integration-test</phase>
                                <goals>
                                    <goal>stop</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>

                    <!-- Runs the integration tests (*IT) after the server is started -->
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-failsafe-plugin</artifactId>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>integration-test</goal>
                                    <goal>verify</goal>
                                </goals>
                            </execution>
                        </executions>
                        <configuration>
                            <trimStackTrace>false</trimStackTrace>
                            <enableAssertions>true</enableAssertions>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
        </profile>

    </profiles>
</project>

Button button = new Button("Gerar relatório");
FileDownloadWrapper buttonWrapper = new FileDownloadWrapper(
    new StreamResource("relatorio.pdf", () -> relatorioService.gerarRelatorio()));
buttonWrapper.wrapComponent(button);
add(buttonWrapper);

import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.stereotype.Component;

import br.com.fjsistemas.repository.VendaRepository;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;

@Component
public class ConverteJrxmlToPdf {

	@SuppressWarnings("unused")
	private VendaRepository vendaRepository;

	private DataSource dataSource;

	public ConverteJrxmlToPdf(VendaRepository vendaRepository, DataSource dataSource) {
		this.vendaRepository = vendaRepository;
		this.dataSource = dataSource;
	}

	public void conversor() throws JRException, SQLException {

		JasperReport document = JasperCompileManager.compileReport(
				"C:\\Users\\fjd2320\\eclipse-workspace\\fjsistemas-vendas-vaadin\\src\\main\\resources\\RelatorioVendas.jrxml");

		JasperPrint print = JasperFillManager.fillReport(document, null, dataSource.getConnection());

		JasperExportManager.exportReportToPdfFile(print,
				"C:\\Users\\fjd2320\\eclipse-workspace\\fjsistemas-vendas-vaadin\\src\\main\\resources\\RelatorioVendas.pdf");
	}

}

JasperExportManager.exportReportToPdfFile(
    print,
    "C:\\Users\\fjd2320\\eclipse-workspace\\fjsistemas-vendas-vaadin\\src\\main\\resources\\RelatorioVendas.pdf"
);

ByteArrayOutputStream baos = new ByteArrayOutputStream();
JasperExportManager.exportReportToPdfStream(print, baos);
byte[] relatorio = baos.toByteArray();

return relatorio;

package br.com.fjsistemas.relatorios;

import java.io.ByteArrayOutputStream;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.stereotype.Component;

import br.com.fjsistemas.repository.VendaRepository;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;

@Component
public class ConverteJrxmlToPdf {

	@SuppressWarnings("unused")
	private VendaRepository vendaRepository;

	private DataSource dataSource;

	public ConverteJrxmlToPdf(VendaRepository vendaRepository, DataSource dataSource) {
		this.vendaRepository = vendaRepository;
		this.dataSource = dataSource;
	}

	public byte[] conversor() throws JRException, SQLException {

		JasperReport document = JasperCompileManager.compileReport(
				"C:\\Users\\fjd2320\\eclipse-workspace\\fjsistemas-vendas-vaadin\\src\\main\\resources\\RelatorioVendas.jrxml");

		JasperPrint print = JasperFillManager.fillReport(document, null, dataSource.getConnection());

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		JasperExportManager.exportReportToPdfStream(print, baos);
		byte[] relatorio = baos.toByteArray();

		return relatorio;
	}

}

exportarRelatorio.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
		exportarRelatorio.getStyle().set("margin-top", "37px");
		exportarRelatorio.setWidth("180px");
		exportarRelatorio.addClickListener(event -> {

			FileDownloadWrapper buttonWrapper = new FileDownloadWrapper(
					new StreamResource("RelatorioVenda.pdf", () -> pdf.conversor()));
			buttonWrapper.wrapComponent(exportarRelatorio);
			add(buttonWrapper);

FileDownloadWrapper buttonWrapper = new FileDownloadWrapper(
	new StreamResource("RelatorioVenda.pdf", () -> new ByteArrayInputStream(pdf.conversor()))
);

java.lang.NoClassDefFoundError: org/vaadin/olli/FileDownloadWrapper
	at br.com.fjsistemas.relatorios.RelatorioVendaView.lambda$5(RelatorioVendaView.java:127) ~[classes/:na]
	at com.vaadin.flow.component.ComponentEventBus.fireEventForListener(ComponentEventBus.java:205) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.component.ComponentEventBus.handleDomEvent(ComponentEventBus.java:373) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.component.ComponentEventBus.lambda$addDomTrigger$dd1b7957$1(ComponentEventBus.java:264) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.internal.nodefeature.ElementListenerMap.lambda$fireEvent$2(ElementListenerMap.java:443) ~[flow-server-2.6.3.jar:2.6.3]
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1507) ~[na:na]
	at com.vaadin.flow.internal.nodefeature.ElementListenerMap.fireEvent(ElementListenerMap.java:443) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.rpc.EventRpcHandler.handleNode(EventRpcHandler.java:61) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.rpc.AbstractRpcInvocationHandler.handle(AbstractRpcInvocationHandler.java:66) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocationData(ServerRpcHandler.java:412) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.ServerRpcHandler.lambda$handleInvocations$1(ServerRpcHandler.java:393) ~[flow-server-2.6.3.jar:2.6.3]
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1507) ~[na:na]
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:393) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:320) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:92) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1570) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:252) ~[flow-server-2.6.3.jar:2.6.3]
	at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:111) ~[vaadin-spring-12.4.0.jar:na]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.45.jar:4.0.FR]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:710) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:457) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:352) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.45.jar:4.0.FR]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.6.jar:5.3.6]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.45.jar:4.0.FR]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.6.jar:5.3.6]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.6.jar:5.3.6]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.6.jar:5.3.6]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.6.jar:5.3.6]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.45.jar:9.0.45]
	at java.base/java.lang.Thread.run(Thread.java:830) ~[na:na]
Caused by: java.lang.ClassNotFoundException: org.vaadin.olli.FileDownloadWrapper
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602) ~[na:na]
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
	at java.base/java.lang.Class.forName(Class.java:416) ~[na:na]
	at org.springframework.boot.devtools.restart.classloader.RestartClassLoader.loadClass(RestartClassLoader.java:145) ~[spring-boot-devtools-2.4.5.jar:2.4.5]
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
	... 69 common frames omitted

exportarRelatorio.addThemeVariants(ButtonVariant.LUMO_PRIMARY);
		exportarRelatorio.getStyle().set("margin-top", "37px");
		exportarRelatorio.setWidth("180px");
		exportarRelatorio.addClickListener(event -> {

			FileDownloadWrapper buttonWrapper = new FileDownloadWrapper(
					new StreamResource("RelatorioVenda.pdf", () -> {
						try {
							return new ByteArrayInputStream(pdf.conversor());
						} catch (JRException | SQLException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
						return null;
					})
				);
			buttonWrapper.wrapComponent(exportarRelatorio);
			add(buttonWrapper);
		});

package br.com.fjsistemas.embedded;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

@Component
public class ImprimePDF extends HttpServlet {

	private static final long serialVersionUID = 1L;

	byte[] arquivo = null;

	File file = new File("C:\\Users\\fjd2320\\eclipse-workspace\\Vaadin-Application-Sales-master\\src\\main\\resources\\RelatorioVendas.pdf");

	public void service(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {

		try {
			arquivo = fileToByte(file);
		} catch (Exception e) {
			e.printStackTrace();
		}

		response.setContentType("application/pdf");
		response.setContentLength(arquivo.length);
		ServletOutputStream ouputStream = response.getOutputStream();
		ouputStream.write(arquivo, 0, arquivo.length);
		ouputStream.flush();
		ouputStream.close();
	}

	public static InputStream byteToInputStream(byte[] bytes) throws Exception {
		ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
		return bais;
	}

	public static byte[] fileToByte(File imagem) throws Exception {
		@SuppressWarnings("resource")
		FileInputStream fis = new FileInputStream(imagem);
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		byte[] buffer = new byte[8192];
		int bytesRead = 0;
		while ((bytesRead = fis.read(buffer, 0, 8192)) != -1) {
			baos.write(buffer, 0, bytesRead);
		}
		return baos.toByteArray();
	}
}