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Я использую Spring с hibernate и получаю null как sessionFactory, когда пытаюсь сохранить свои данные. Я стараюсь, но не могу найти, почему я получаю sessionFactory как null;java.lang.NullPointerException: sessionfactory is null
Ниже приведены мои XML и Java классы
SEVERE: Servlet.service() for servlet [spring] in context with path [/River] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
at river.amit.com.dao.LoginDao.savePerson(LoginDao.java:19)
at river.amit.com.service.LoginService.saveLogin(LoginService.java:18)
at river.amit.com.LoginController.handleRequest(LoginController.java:28)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/hello.html">helloController</prop>
<prop key="/login.html">loginController</prop>
</props>
</property>
</bean>
<bean id="helloController" class="river.amit.com.HelloWorldController"/>
<bean id="loginController" class="river.amit.com.LoginController"/>
<bean id="localeChangeInterceptor" class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
<property name="paramName" value="hl" />
</bean>
<bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver" />
<!-- Hibernate configuration -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/river"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="mappingResources">
<list>
<value>\river\amit\com\curd\login.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
<!-- <property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property> -->
</bean>
<!-- <bean id="template" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean> -->
<!-- <bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
-->
<bean id="logindao" class="river.amit.com.dao.LoginDao">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
</beans>
public class LoginDao {
//private HibernateTemplate template;
public void LoginDao(){};
private SessionFactory sessionFactory;
/* public SessionFactory getSessionFactory() {
return sessionFactory;
}*/
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public void savePerson(Login login){
this.sessionFactory.getCurrentSession().save(login);
}
}
public class LoginService {
private LoginDao logindao;
public LoginDao getLogindao() {
return logindao;
}
public void setLogindao(LoginDao logindao) {
this.logindao = logindao;
}
public void saveLogin(Login login) {
getLogindao().savePerson(login);
}
}
package river.amit.com;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import river.amit.com.curd.Login;
import river.amit.com.dao.LoginDao;
import river.amit.com.service.LoginService;
public class LoginController implements Controller {
@Override
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
String name = request.getParameter("username");
String password = request.getParameter("password");
Login login = new Login();
// TODO Auto-generated method stub
if (name != null) {
login.setName(name);
login.setPassword(password);
LoginService service = new LoginService();
service.setLogindao(new LoginDao());
service.saveLogin(login);
String message = "HELLO " + name;
return new ModelAndView("test", "message", message);
} else {
return new ModelAndView("errorpage", "message",
"Sorry, username or password error");
}
}
}
Какой код вы получаете? –
Вы не правильно ввели sessionFactory в свой класс LoginDao. С предоставленной информацией, это все, что мы можем вам рассказать. Я предлагаю добавить Spring и Hibernate Config и соответствующий код из 'LoginDao' – cowls