一次请求在同一个事务实现

 HiberSessionFilter过滤器代码：

 

package www.csdn.dbshop.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.hibernate.Transaction;

import www.csdn.dbshop.util.HiberSessionFactory;

public class HiberSessionFilter implements Filter {

    public void destroy() {

    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        HttpServletRequest req = (HttpServletRequest) request;
        // 获取当前请求的URI路径，例如/shoping/csdn/MemberAction_query.action
        String requesturi = req.getRequestURI();
        // 截取字符串，获取‘_’之后的字符串
        String str = requesturi.substring(requesturi.indexOf("_") + 1);
        // 截取 _名字 如过以 add ,update ,delete 开始 就添加事务处理，把有过事务的处理 都删除
        // 根据获取‘_’之后的字符串，截取‘.’之前的字符串，即：就是URI中_到.之间的字符串，即：Action中的方法名
        String uri = str.substring(0, str.indexOf("."));
        // 判断截取的字符，如果是CUD则进行开启事务的操作，反之，不用开启事务
        if ("addObject".equals(uri) || "updateObject".equals(uri)
                || "deleteObject".equals(uri) || "reg".equals(uri)
                || "register".equals(uri) || "buy".equals(uri)) {

            Transaction ts = null;
            try {
                ts = HiberSessionFactory.getSession().beginTransaction();
                chain.doFilter(request, response);
                ts.commit();
            } catch (Exception e) {
                if (ts != null) {
                    ts.rollback();
                }
                throw new RuntimeException(e);
            } finally {
                // www.cdtarena.com关闭session
                HiberSessionFactory.closeSession();
            }
        } else {
            try {
                chain.doFilter(request, response);
            } catch (Exception e) {
                throw new RuntimeException(e);
            } finally {
                // 关闭session
                HiberSessionFactory.closeSession();
            }
        }
    }

    public void init(FilterConfig filterConfig) throws ServletException {
        // TODO Auto-generated method stub

    }

}

web.xml代码：

<!-- sessionclose过滤器 -->
  <filter>
   <filter-name>HiberSessionFilter</filter-name>
   <filter-class>www.csdn.dbshop.filter.HiberSessionFilter</filter-class>
 </filter>

 <filter-mapping>
   <filter-name>HiberSessionFilter</filter-name>
   <url-pattern>*.action</url-pattern>
 </filter-mapping>

注意：在Struts2中，过滤器最好放在Struts2过滤器之前。
转自：http://www.cdtarena.com/javapx/201304/8394.html