SSH开发过程中遇到的问题

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: hospital.model.Role.roleAuths, no session or session was closed
 这个主要是由于懒加载引起的，在相应的配置文件中添加lazy="false"就可以了。

比如： <set name="userRoles" inverse="true" lazy="false">
            <key>
                <column name="roleid" not-null="true" />
            </key>
            <one-to-many class="hospital.model.UserRole"  />
        </set>
        <set name="roleAuths" inverse="true" lazy="false">
            <key>
                <column name="roleid" not-null="true" />
            </key>
            <one-to-many class="hospital.model.RoleAuth" />
        </set>