一次请求在同一个事务实现_Java相关

一次请求在同一个事务实现

HiberSessionFilter过滤器代码：

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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：

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  <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。

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