为什么我用过滤器管理事务根本不回滚？

[颖辉小居]

事务过滤器

package yh.position.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 javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;
import org.hibernate.Session;
import org.hibernate.Transaction;

import yh.position.util.HibernateUtils;

/**
 * 用于进行Hibernate事务处理的Servlet过滤器
 * 
 * @author zyh 2015-10-21
 */
public class TransactionFilter implements Filter {
	private static Logger log = Logger.getLogger(TransactionFilter.class);

	/**
	 * 过滤器的主要方法 用于实现Hibernate事务的开始和提交
	 */
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		Session session = HibernateUtils.getSession();
		Transaction tx = session.getTransaction();
		if (!tx.isInitiator()) {
			tx.begin();
		}
		System.out.println("----开启事物----");
		try {
			// 开始一个新的事务
			log.info("Starting a database transaction");
			// tx.begin();不注释就报错：nested transactions not supported
			log.info("Request Path:\t"
					+ ((HttpServletRequest) request).getServletPath());

			// Call the next filter (continue request processing)
			chain.doFilter(request, response);
			
			// 提交事务
			log.info("Committing the database transaction");
			if (tx.isInitiator()) {
				tx.commit();
				
			}

			System.out.println("----事物提交----");
		} catch (Throwable ex) {
			ex.printStackTrace();
			try {
				// 回滚事务
				log.info("Trying to rollback database transaction after exception");
				if (tx.isInitiator()) {
					tx.rollback();
					System.out.println("----回滚事务----");
				}
			} catch (Throwable rbEx) {
				log.error("Could not rollback transaction after exception!",
						rbEx);
			}
			// 抛出异常
			throw new ServletException(ex);
		} finally {
			log.info("session closed");
			HibernateUtils.closeSession();
		}
	}

	/**
	 * Servlet过滤器的初始化方法 可以读取配置文件中设置的配置参数
	 */
	public void init(FilterConfig filterConfig) throws ServletException {
	}

	/**
	 * Servlet的销毁方法 用于释放过滤器所申请的资源
	 */
	public void destroy() {
	}
}

Action

package yh.position.action.police;

import yh.position.action.BaseAction;
import yh.position.dao.impl.PoliceDaoImpl;
import yh.position.model.Police;

public class PoliceUpdatePwdAction extends BaseAction {

	private static final long serialVersionUID = 1L;
	private String newPwd;

	public String getNewPwd() {
		return newPwd;
	}

	public void setNewPwd(String newPwd) {
		this.newPwd = newPwd;
	}

	@Override
	public String execute() throws Exception {
		int policeId = currPoliceId();

		Police police = new PoliceDaoImpl().get(policeId);
		police.setPwd(newPwd);
		new PoliceDaoImpl().save(police);
		code = 1;
		message = "修改成功！";
		
		int err = 1 / 0;

		returnJson();
		return SUCCESS;
	}
}

结果jsp上显示了 除数为0的错误。可是控制台打印了事务的开启和提交，修改的数据也保存到数据库了。没有回滚的打印。

[颖辉小居]

求求大家 帮帮忙啊，我用的是hibernate4 ，不会用spring管理他的事务

[颖辉小居]

自己顶，Spring 对hibernate4 好像不再提供事务支持了。

[颖辉小居]

web的配置

<?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" version="3.0">
  <display-name></display-name>
  <!-- 编码过滤器 -->
  <filter>
    <filter-name>charsetFilter</filter-name>
    <filter-class>yh.position.Filter.CharsetFilter</filter-class>
    <init-param>
      <param-name>codingType</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>charsetFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!--登陆过滤器 -->
  <filter>       
         <filter-name>loginFilter</filter-name>       
         <filter-class>yh.position.Filter.LoginFilter</filter-class>       
    </filter>       
      <filter-mapping>    
         <filter-name>loginFilter</filter-name>    
         <url-pattern>/*</url-pattern>    
  </filter-mapping> 
  <!-- 事务过滤器  --> 
  <filter>
    <description>事务的过滤器</description>
    <filter-name>TransactionFilter</filter-name>
    <filter-class>yh.position.Filter.TransactionFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>TransactionFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!-- session监听器 -->
  <listener>
    <listener-class>yh.position.listener.OnlineUserListener</listener-class>
  </listener>
    <!-- struts2过滤器 -->
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>