使用Spring模板查询问题

Question

不是，这个就是因为lazy引起的
一般的解决方法是用一个Filter<filter>
   <filter-name>hibernateFilter</filter-name>
   <filter-class>
              org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
        </filter-class>
</filter>
  
<filter-mapping>
   <filter-name>hibernateFilter</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>

Answer 1

解决办法有三个1 不用lazy
2 用createQuery("from a left join a.list")这种方式来进行关联查询3 也是用的比较多的，就是openSessionView
在web.xml中加入如下代码<filter>
        <filter-name>openSession</filter-name>
        <filter-class>
            org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
        </filter-class>        <init-param>
            <param-name>singleSession</param-name>
            <param-value>false</param-value>
        </init-param>    </filter>
    <filter-mapping>
        <filter-name>openSession</filter-name>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>
注意把这个filter放到所有filter后面