GWT + SPRING + HIBERNATE の統合に関する質問を見ましたが、現在のバージョンで明確または最新のものはありません! 統合（フォームの送信とDBへの保存）の明確で簡単な例を持っている人がいれば、私は非常に感謝しています! シンプルなプロジェクトを ZIP に入れてアップロードしていただければ (その jar ファイルがあれば素晴らしいでしょう) ありがとうございます!
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gwt 2.5.0-rc1、Spring 3.1.2.RELEASE、およびHibernate 4を使用するこれが役立つと思います。このプロジェクトはmavenを使用しているため、必要な依存関係を処理する maven をインストールします。それ、コマンドラインビルドで飛び込みます。git clone$ mvn clean install
基本的な gwt サーバー共有クライアント アーキテクチャは次のとおりです。
実在物
@Entity
@Table(name = "TBL_BOOK")
public class Book implements Serializable {
private static final long serialVersionUID = -687874117917352477L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
private Long id;
@Column(name = "TITLE", nullable = false)
private String title;
@Column(name = "SUBTITLE")
private String subtitle;
@Column(name = "AUTOR", nullable = false)
private String autor;
@Column(name = "DESCRIPTION")
private String description;
@Column(name = "ISBN")
private String isbn;
@Column(name = "GENRE")
private String genre;
@Temporal(TemporalType.DATE)
@Column(name = "PUBLISHED_DATE")
private Date publishedDate;
@Column(name = "PUBLISHER")
private String publisher;
public Book() {
}
public Book(Long id, String title, String subtitle, String autor,
String description, String isbn, String genre, Date publishedDate,
String publisher) {
this.id = id;
this.title = title;
this.subtitle = subtitle;
this.autor = autor;
this.description = description;
this.isbn = isbn;
this.genre = genre;
this.publishedDate = publishedDate;
this.publisher = publisher;
}
public Book(Book bookDTO) {
this.id = bookDTO.getId();
this.title = bookDTO.getTitle();
this.subtitle = bookDTO.getSubtitle();
this.autor = bookDTO.getAutor();
this.description = bookDTO.getDescription();
this.isbn = bookDTO.getIsbn();
this.genre = bookDTO.getGenre();
this.publishedDate = bookDTO.getPublishedDate();
this.publisher = bookDTO.getPublisher();
}
//getters and setters
@Override
public String toString() {
return "Book [id=" + id + ", title=" + title + ", subtitle=" + subtitle
+ ", author=" + autor + ", description=" + description
+ ", isbn=" + isbn + ", genre=" + genre + ", publishedDate="
+ publishedDate + ", publisher=" + publisher + "]";
}
}
ウェブ構成
<!-- SpringGwt remote service servlet -->
<servlet>
<servlet-name>springGwtRemoteServiceServlet</servlet-name>
<servlet-class>org.spring4gwt.server.SpringGwtRemoteServiceServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>springGwtRemoteServiceServlet</servlet-name>
<url-pattern>/GwtSpringHibernate/springGwtServices/*</url-pattern>
</servlet-mapping>
RPC のクライアント側スタブ
/**
* The client side stub for the RPC service.
*/
@RemoteServiceRelativePath("springGwtServices/bookService")
public interface BookService extends RemoteService {
public void saveOrUpdate(Book book) throws Exception;
public void delete(Book book) throws Exception;
public Book find(long id);
public List<Book> findAllEntries();
}
サーバ
@Service("bookService")
public class BookServiceImpl extends RemoteServiceServlet implements BookService {
private static final long serialVersionUID = -6547737229424190373L;
private static final Log LOG = LogFactory.getLog(BookServiceImpl.class);
@Autowired
private BookDAO bookDAO;
@Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
public void saveOrUpdate(Book book) throws Exception {
//
}
@Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
public void delete(Book book) throws Exception {
//
}
public Book find(long id) {
return bookDAO.findById(id);
}
public List<Book> findAllEntries() {
//
}
}
クライアント ビュー
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class GwtSpringHibernate implements EntryPoint {
/**
* The message displayed to the user when the server cannot be reached or
* returns an error.
*/
private static final String SERVER_ERROR = "An error occurred while "
+ "attempting to contact the server. Please check your network "
+ "connection and try again.";
/**
* Create a remote service proxy to talk to the server-side Book service.
*/
private final BookServiceAsync bookService = GWT.create(BookService.class);
/**
* This is the entry point method.
*/
public void onModuleLoad() {
DateBox.DefaultFormat defaultFormatter = new DateBox.DefaultFormat(DateTimeFormat.getFormat("dd.MM.yyyy"));
// Add new Book Area
final TextBox titleField = new TextBox();
titleField.setFocus(true);
final TextBox subtitleField = new TextBox();
final TextBox autorField = new TextBox();
final TextBox descriptionField = new TextBox();
final TextBox isbnField = new TextBox();
final TextBox genreField = new TextBox();
final DateBox publishedDateField = new DateBox();
publishedDateField.setFormat(defaultFormatter);
final TextBox publisherField = new TextBox();
final Button saveButton = new Button("Save");
saveButton.addStyleName("button");
final Button retrieveButton = new Button("Retrieve");
retrieveButton.addStyleName("button");
final Label errorLabel = new Label();
// Add fields to the Rootpanel
RootPanel.get("title").add(titleField);
RootPanel.get("subtitle").add(subtitleField);
RootPanel.get("autor").add(autorField);
RootPanel.get("description").add(descriptionField);
RootPanel.get("isbn").add(isbnField);
RootPanel.get("genre").add(genreField);
RootPanel.get("publishedDate").add(publishedDateField);
RootPanel.get("publisher").add(publisherField);
RootPanel.get("btnSave").add(saveButton);
RootPanel.get("btnRetrieveAllEntries").add(retrieveButton);
RootPanel.get("errorLabelContainer").add(errorLabel);
// Create the popup dialog box
final DialogBox dialogBox = new DialogBox();
dialogBox.setText("Remote Procedure Call");
dialogBox.setAnimationEnabled(true);
final Button closeButton = new Button("Close");
// We can set the id of a widget by accessing its Element
closeButton.getElement().setId("closeButton");
final Label textToServerLabel = new Label();
final HTML serverResponseLabel = new HTML();
VerticalPanel dialogVPanel = new VerticalPanel();
dialogVPanel.addStyleName("dialogVPanel");
dialogVPanel.add(new HTML("<b>Sending request to the server:</b>"));
dialogVPanel.add(textToServerLabel);
dialogVPanel.add(new HTML("<b>Server replies:</b>"));
dialogVPanel.add(serverResponseLabel);
dialogVPanel.setHorizontalAlignment(VerticalPanel.ALIGN_RIGHT);
dialogVPanel.add(closeButton);
dialogBox.setWidget(dialogVPanel);
// Add a handler to close the DialogBox
closeButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
dialogBox.hide();
saveButton.setEnabled(true);
saveButton.setFocus(true);
retrieveButton.setEnabled(true);
}
});
class SaveBookHandler implements ClickHandler, KeyUpHandler {
public void onKeyUp(KeyUpEvent event) {
if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
saveBook();
}
}
public void onClick(ClickEvent arg0) {
saveBook();
}
private void saveBook() {
errorLabel.setText("");
String _title = titleField.getText();
String _subtitle = subtitleField.getText();
String _autor = autorField.getText();
String _desc = descriptionField.getText();
String _isbn = isbnField.getText();
String _genre = genreField.getText();
Date _publishedDate = publishedDateField.getValue();
String _publisher = publisherField.getText();
// First, we validate the input.
if (Validator.isBlank(_title) || Validator.isBlank(_autor)) {
String errorMessage = "Please enter at least the Title and the Autor of the book";
errorLabel.setText(errorMessage);
return;
}
Book bookDTO = new Book(null, _title, _subtitle, _autor, _desc, _isbn, _genre, _publishedDate, _publisher);
saveButton.setEnabled(false);
serverResponseLabel.setText("");
textToServerLabel.setText(bookDTO.toString());
bookService.saveOrUpdate(bookDTO, new AsyncCallback<Void>() {
public void onFailure(Throwable caught) {
dialogBox.setText("Remote Procedure Call - Failure");
serverResponseLabel.addStyleName("serverResponseLabelError");
serverResponseLabel.setHTML(SERVER_ERROR + caught.toString());
dialogBox.center();
closeButton.setFocus(true);
}
public void onSuccess(Void noAnswer) {
dialogBox.setText("Remote Procedure Call");
serverResponseLabel.removeStyleName("serverResponseLabelError");
serverResponseLabel.setHTML("OK");
dialogBox.center();
closeButton.setFocus(true);
}
});
}
}
// Add a handler to send the book info to the server
SaveBookHandler saveBookHandler = new SaveBookHandler();
saveButton.addClickHandler(saveBookHandler);
publisherField.addKeyUpHandler(saveBookHandler);
// Create a handler for the retrieveButton
class RetrieveAllEntriesHandler implements ClickHandler {
/**
* Fired when the user clicks on the retrieveButton.
*/
public void onClick(ClickEvent event) {
retrieveAllEntries();
}
private void retrieveAllEntries() {
// Nothing to validate here
// Then, we send the input to the server.
retrieveButton.setEnabled(false);
errorLabel.setText("");
textToServerLabel.setText("");
serverResponseLabel.setText("");
bookService.findAllEntries(
new AsyncCallback<List<Book>>() {
public void onFailure(Throwable caught) {
// Show the RPC error message to the user
dialogBox.setText("Remote Procedure Call - Failure");
serverResponseLabel.addStyleName("serverResponseLabelError");
serverResponseLabel.setHTML(SERVER_ERROR + caught.toString());
dialogBox.center();
closeButton.setFocus(true);
}
public void onSuccess(List<Book> data) {
dialogBox.setText("Remote Procedure Call");
serverResponseLabel.removeStyleName("serverResponseLabelError");
if(data != null && !data.isEmpty()){
StringBuffer buffer = new StringBuffer();
for (Book book : data) {
buffer.append(book.toString());
buffer.append("<br /><br />");
}
serverResponseLabel.setHTML(buffer.toString());
} else {
serverResponseLabel.setHTML("No book information store in the database.");
}
dialogBox.center();
closeButton.setFocus(true);
}
});
}
}
// Add a handler
RetrieveAllEntriesHandler retrieveAllEntriesHandler = new RetrieveAllEntriesHandler();
retrieveButton.addClickHandler(retrieveAllEntriesHandler);
}
}
その他のウィジェットについては、公式のウィジェット ライブラリであるUiBinderを参照してください。
于 2013-05-07T16:40:00.997 に答える