下面是web.xml代码:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Projeto_joas</display-name>
<resource-ref>
<res-ref-name>jdbc/DiaDiaDev</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<servlet>
<display-name>FacesServlet</display-name>
<servlet-name>FacesServlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>FacesServlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.expressionFactory</param-name>
<param-value>com.sun.el.ExpressionFactoryImpl</param-value>
</context-param>
<!-- <filter> -->
<!--<filter-name>FilterHibernate</filter-name> -->
<!--<filter-class>util.filter.ConexaoHibernateFilter</filter-class> -->
<!--</filter> -->
<!--<filter-mapping> -->
<!-- <filter-name>FilterHibernate</filter-name> -->
<!--<url-pattern>*.jsf</url-pattern> -->
<!--</filter-mapping> -->
</web-app>
这样服务器运行得很好,如果我删除了过滤器上的注解,它将不会启动,并将抛出那些异常:
严重:启动java.util.concurrent时子容器失败。执行异常:org.apache.catalina.LifecycleException:无法启动组件[标准引擎[ Catalina ].标准主机[本地主机]]原因:org.apache.catalina.LifecycleException:无法启动组件[标准引擎[ Catalina ].标准主机[本地主机]]原因:org.apache.catalina.LifecycleException:启动期间子容器失败
和
警告:无法检索容器[StandardEngine[ Catalina ].StandardHost[localhost].StandardContext[/Projeto_joas]]的JNDI命名上下文,因此不会对该容器javax执行任何清理。naming.NamingException:没有绑定到此类加载器的命名上下文
过滤器类:
package util.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.hibernate.SessionFactory;
import util.HibernateUtil;
public class ConexaoHibernateFilter implements Filter {
private SessionFactory sf;
@Override
public void init(FilterConfig arg0) throws ServletException {
this.sf = HibernateUtil.getSessionFactory();
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
FilterChain chain) throws IOException, ServletException {
try {
this.sf.getCurrentSession().beginTransaction();
chain.doFilter(servletRequest, servletResponse);
this.sf.getCurrentSession().getTransaction().commit();
this.sf.getCurrentSession().close();
} catch (Throwable ex) {
try {
if (this.sf.getCurrentSession().getTransaction().isActive()) {
this.sf.getCurrentSession().getTransaction().rollback();
}
} catch (Throwable t) {
t.printStackTrace();
}
throw new ServletException(ex);
}
}
@Override
public void destroy() {
// TODO Auto-generated method stub
}
}
1条答案
按热度按时间rt4zxlrg1#
我也犯了同样的错误。我犯的错误是我没有在destroy和init方法中添加任何主体。所以对我来说,它只需要在destroy和init方法的主体中添加一些print语句就可以了。