我试图使用recommendations并将这些注释放在zkoss控制器中，但是即使使用这些代码，spring服务也没有初始化，并且我得到了NullPointer。我的代码。
@VariableResolver(org.zkoss.zkplus.spring.DelegatingVariableResolver.class)
public class UserNotesListController extends SelectorComposer<Component> {
private static final long serialVersionUID = 1L;
private static final Logger log =
LoggerFactory.getLogger(UserNotesListController.class);
@WireVariable
private UserService userService;
@WireVariable
private NoteService noteService;
private ListModel<Note> notesListModel;
@Wire
private Window window;
public UserNotesListController() {
notesListModel = new ListModelList<>(noteService.listNotes());
((ListModelList<Note>) notesListModel).setMultiple(true);
log.info("Конструктор класса {} успешно создан", UserNotesListController.class.getSimpleName());
}
public ListModel<Note> getNotesListModel() {
return notesListModel;
}
@Listen("onSelect = notesListBox")
public void updateRow() {
Set<Note> selectedNotes = ((ListModelList<Note>) notesListModel).getSelection();
int size = selectedNotes.size();
showNotify(size > 0 ? size + " notes selected: " + selectedNotes : "no notes selected", window);
}
private void showNotify(String message, Component reference) {
Clients.showNotification(message, "Info", reference, "top_right", 2000, true);
}
}
java.lang.NullPointerException
ru.mightynoobs.springhibernate.controller.UserNotesListController.<init>(UserNotesListController.java:44)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
java.lang.Class.newInstance(Class.java:442)
org.zkoss.zk.ui.impl.AbstractUiFactory.newComposer(AbstractUiFactory.java:130)
org.zkoss.zk.ui.impl.AbstractUiFactory.newComposer(AbstractUiFactory.java:142)
org.zkoss.zk.ui.impl.Utils.newComposer(Utils.java:90)
org.zkoss.zk.ui.metainfo.ComponentInfo.toComposer(ComponentInfo.java:355)
org.zkoss.zk.ui.metainfo.ComponentInfo.toComposers(ComponentInfo.java:323)
org.zkoss.zk.ui.metainfo.ComponentInfo.resolveComposer(ComponentInfo.java:310)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild0(UiEngineImpl.java:834)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:826)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:735)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreateChild(UiEngineImpl.java:797)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate0(UiEngineImpl.java:757)
org.zkoss.zk.ui.impl.UiEngineImpl.execCreate(UiEngineImpl.java:699)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:442)
org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:356)
org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:217)
org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:136)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:152)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
=======
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="ru.mightynoobs.springhibernate"/>
<!--Database information-->
<bean id="originalDataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url"
value="jdbc:mysql://localhost:3306/mightynoobsdb"/>
<property name="username" value="root"/>
<property name="password" value="admin"/>
</bean>
<!--for log4JDBC-->
<bean id="dataSource" class="net.sf.log4jdbc.Log4jdbcProxyDataSource" >
<constructor-arg ref="originalDataSource" />
<property name="logFormatter">
<bean class="net.sf.log4jdbc.tools.Log4JdbcCustomFormatter" >
<property name="loggingType" value="SINGLE_LINE" />
<!--<property name="margin" value="19" />--> <!-- на этой строчке Spring выдает ошибку - не может прочитать значение value -->
<property name="sqlPrefix" value="SQL:::" />
</bean>
</property>
</bean>
<!--Hibernate 4 SessionFactory Bean definition-->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="annotatedClasses">
<list>
<value>ru.mightynoobs.springhibernate.model.user.User</value>
<value>ru.mightynoobs.springhibernate.model.user.Role</value>
<value>ru.mightynoobs.springhibernate.model.note.NoteState</value>
<value>ru.mightynoobs.springhibernate.model.note.NoteType</value>
<value>ru.mightynoobs.springhibernate.model.note.Note</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.connection.url">jdbc:mysql://localhost:3306/mightynoobsdb</prop>
<prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>
</props>
</property>
</bean>
<!--UserDao and UserService beans-->
<bean id="userDao" class="ru.mightynoobs.springhibernate.dao.user.UserDaoImpl">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="userService" class="ru.mightynoobs.springhibernate.service.user.UserServiceImpl">
<property name="userDao" ref="userDao"/>
</bean>
<!--NoteDao and NoteService beans-->
<bean id="noteDao" class="ru.mightynoobs.springhibernate.dao.note.NoteDaoImpl">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="noteService" class="ru.mightynoobs.springhibernate.service.note.NoteServiceImpl">
<property name="noteDao" ref="noteDao"/>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
当我做这样的事情：
private UserService userService = (UserService) SpringUtil.getBean("userService")
很容易。有什么建议吗？
最佳答案
我们使用普通的@Inject批注，但是我们拥有这个AbstractVM，我们需要对其进行扩展才能使其工作：
public abstract class AbstractVM {
public AbstractVM() {
this.autowire(this);
}
protected final void autowire(Object object) {
this.getApplicationContext().getAutowireCapableBeanFactory()
.autowireBean(object);
this.getApplicationContext().getAutowireCapableBeanFactory()
.initializeBean(object, null);
}
/**
* Gets the application context.
*
* @return the application context
*/
protected final ApplicationContext getApplicationContext() {
return WebApplicationContextUtils
.getRequiredWebApplicationContext(Executions.getCurrent()
.getDesktop().getWebApp().getServletContext());
}
}
所以是vm的示例：
import javax.inject.Inject;
public class OverviewVM extends AbstractVM {
@Inject
private NotaService notaService;
@Inject
private ContactService contactService;
编辑：
@Dunni的评论是正确的。
您不能在构造函数中使用自动装配的Bean。我以前的解决方案是MVVM，但是对于MVC，您需要将该代码放置在
doBeforeCompose或doAfterCompose方法中，而不是在构造函数中。 （从SelectorComposer覆盖它）关于java - 在ZKoss Controller 中可以自动接线Spring bean吗？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/43329867/