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我刚开始学习Vaadin。我已经完成了基于这个视频系列的所有教程： https://www.youtube.com/watch?v=o93ofXBIkf8&list=PLcRrh9hGNalkIgvImLRO9u3D0YpmEWuqo 当我从Eclipse创建Vaadin 7/8项目时，我可以使用视频中使用的所有功能。 像textfield.addTextChangeListener（e - > ...） filterText.setInputPrompt（“filter by name”）;Vaadin在Spring Boot中缺少一些功能
但是如果我使用SPRING INITIALIZR（https://start.spring.io/），那么我会使用我的UI，这些功能都会丢失。 （可能有更多的功能缺失，我只注意到了这些。）
这里是我的pom.xml的春季启动应用程序。
<?xml version="1.0" encoding="UTF-8"?>
http://maven.apache.org/xsd/maven-4.0.0.xsd“> 4.0.0
<groupId>hu.csani</groupId>
<artifactId>vaadin-sql3</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>vaadin-sql3</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.sf.opencsv</groupId>
<artifactId>opencsv</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>8.0.5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
，并从我的春天启动我的UI应用程序：
package hu.csani.presenter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import com.vaadin.data.Binder;
import com.vaadin.server.VaadinRequest;
import com.vaadin.spring.annotation.SpringUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.Grid;
import com.vaadin.ui.Notification;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;
import com.vaadin.ui.Upload;
import com.vaadin.ui.Upload.SucceededEvent;
import com.vaadin.ui.VerticalLayout;
import hu.csani.model.Customer;
import hu.csani.service.CustomerService;
@SpringUI
public class VaadinUI extends UI implements Upload.Receiver, Upload.SucceededListener {
@Autowired
private CustomerService service;
private Customer customer;
private Binder<Customer> binder = new Binder<>(Customer.class);
private Grid<Customer> grid = new Grid(Customer.class);
private TextField filterText = new TextField();
private TextField firstName = new TextField("First name");
private TextField lastName = new TextField("Last name");
private Button save = new Button("Save", e -> saveCustomer());
private Upload upload;
private File tempFile;
@Override
protected void init(VaadinRequest request) {
// service.setUi(this);
updateGrid();
grid.setColumns("firstName", "lastName");
grid.addSelectionListener(e -> updateForm());
binder.bindInstanceFields(this);
upload = new Upload("Upload it here", this);
upload.addSucceededListener(this);
upload.setImmediateMode(false);
// filterText.p("filter by name");
filterText.addValueChangeListener(e->{
updateGrid();
});
VerticalLayout layout = new VerticalLayout(upload, filterText, grid, firstName, lastName, save);
layout.setMargin(true);
layout.setSpacing(true);
setContent(layout);
}
// private void updateGrid(String filter) {
// List<Customer> customers = service.findAll(filter);
// grid.setItems(customers);
// setFormVisible(false);
// }
private void updateGrid() {
List<Customer> customers = service.findAll(filterText.getValue());
grid.setItems(customers);
setFormVisible(false);
}
private void updateForm() {
if (grid.asSingleSelect().isEmpty()) {
setFormVisible(false);
} else {
customer = grid.asSingleSelect().getValue();
binder.setBean(customer);
setFormVisible(true);
}
}
private void setFormVisible(boolean visible) {
firstName.setVisible(visible);
lastName.setVisible(visible);
save.setVisible(visible);
}
private void saveCustomer() {
service.update(customer);
updateGrid();
}
public void showNotification(String title, String message) {
Notification.show(title, message, Notification.Type.HUMANIZED_MESSAGE);
}
@Override
public OutputStream receiveUpload(String filename, String mimeType) {
System.out.println("receive");
try {
tempFile = File.createTempFile(filename, "");
// System.out.println(tempFile.getAbsolutePath());
// tempFile.deleteOnExit();
return new FileOutputStream(tempFile);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
public void uploadSucceeded(SucceededEvent event) {
// File destinationFile = new File("d:\\test\\" + event.getFilename());
// FileUtils.moveFile(tempFile , destinationFile);
service.processfile(tempFile);
showNotification("CSV upload", "Success");
updateGrid();
}
}