Я пытаюсь сохранить некоторые значения в базе данных MySql из небольшого приложения facelet, но продолжаю получать эту ошибку. У меня было это же приложение со страницей JPS и сервлетом, и он работал нормально с примерно такой же логикой, это мой первый раз, когда я пытаюсь работать с facelets, поэтому это может быть просто глупо, но я бы посоветовал эту помощь.
Спасибо
Ошибка
javax.faces.el.EvaluationException: javax.persistence.TransactionRequiredException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.persistence.TransactionRequiredException
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.doTxRequiredCheck(EntityManagerWrapper.java:163)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.doTransactionScopedTxCheck(EntityManagerWrapper.java:145)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:263)
at vecka19.controller.BookController.addBook(BookController.java:28)
at vecka19.controller.BookController$Proxy$_$$_WeldClientProxy.addBook(BookController$Proxy$_$$_WeldClientProxy.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:257)
at com.sun.el.parser.AstValue.invoke(AstValue.java:248)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:39)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 32 more
index.xhtml
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<h:head>
<title>Vecka19</title>
</h:head>
<h:body>
<section id="bookForm">
<div>
<h:form id="bookForm">
<table>
<tr>
<td><h:outputLabel value="ID: " for="id"/></td>
<td><h:inputText id="id" value="#{book.bookId}"/></td>
</tr>
<tr>
<td><h:outputLabel value="TITLE: " for="title"/></td>
<td><h:inputText id="title" value="#{book.title}"/></td>
</tr>
<tr>
<td><h:outputLabel value="AUTHOR: " for="author"/></td>
<td><h:inputText id="author" value="#{book.author}"/></td>
</tr>
<tr>
<td><h:outputLabel value="PRICE: " for="price"/></td>
<td><h:inputText id="price" value="#{book.price}"/></td>
</tr>
<tr>
<td>
<h:commandButton value="Add" action="#{bookController.addBook()}" />
<h:commandButton value="Get" action="#{bookController.book}" />
<h:commandButton value="Edit" action="#{bookController.editBook()}" />
<h:commandButton value="Delete" action="#{bookController.deleteBook()}" />
</td>
</tr>
</table>
</h:form>
</div>
</section>
<br />
<section id="dbTable">
<div>
<table>
<th>ID</th>
<th>TITLE</th>
<th>AUTHOR</th>
<th>PRICE</th>
<c:forEach items="${bookController.books}" var="book">
<tr>
<td>${book.bookId}</td>
<td>${book.title}</td>
<td>${book.author}</td>
<td>${book.price}</td>
</tr>
</c:forEach>
</table>
</div>
</section>
</h:body>
BookController.java
package vecka19.controller;
import java.util.List;
import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import vecka19.model.Book;
@Named
@RequestScoped
public class BookController {
@Inject Book book;
@PersistenceContext
private EntityManager em;
public List getBooks() {
return em.createNamedQuery("Book.findAll").getResultList();
}
public Book getBook() {
return em.find(Book.class, book.getBookId());
}
public void addBook() {
em.persist(book);
}
public void editBook() {
em.merge(book);
}
public void deleteBook() {
em.remove(getBook());
}
}
Book.java
package vecka19.model;
import java.io.Serializable;
import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
@Entity
@Named
@RequestScoped
@Table(name = "BOOKS")
@NamedQueries({@NamedQuery(name = "Book.findAll", query = "SELECT b FROM Book b")})
public class Book implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@NotNull
@Column(name = "BOOK_ID")
private Integer bookId;
@Column(name = "TITLE")
private String title;
@Column(name = "AUTHOR")
private String author;
@Column(name = "PRICE")
private Integer price;
public Book() {
}
public Book(Integer bookId) {
this.bookId = bookId;
}
public Integer getBookId() {
return bookId;
}
public void setBookId(Integer bookId) {
this.bookId = bookId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public Integer getPrice() {
return price;
}
public void setPrice(Integer price) {
this.price = price;
}
}
percistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="vecka19PU" transaction-type="JTA">
<jta-data-source>jdbc/MySQLDataSource</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties/>
</persistence-unit>
</persistence>