2008-01-17
hibernate:Write operations arenot allowed...)
关键字: hibernate环境 spring＋hibernate3＋struts
failed to lazily initialize a collection of role: no session or session was closed
试验了一下发现了几个解决方法：
1、是把对应一对多的那两个列lazy=true改为lazy＝false即可
2、对于查询中如果用的是xxx.load（class，id）则改为xxx,get(class，id)
3在web.xml文件中加入
<filter>
<filter-name>hibernateFilter</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>
<!--这个-- <init-param>一定要加不然很可能会报错：org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER) - turn your Session into FlushMode.AUTO or remove 'readOnly' marker from transaction definition
>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>*.mmg</url-pattern>
</filter-mapping>
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