问题描写叙述:
Struts Problem Report
Struts has detected an unhandled exception:
Messages: |
|
File: | org/hibernate/proxy/AbstractLazyInitializer.java |
Stacktraces
org.apache.jasper.JasperException: javax.el.ELException: Error reading 'name' on type future.oa.domain.Department_$$_jvstb8a_0
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
.......
javax.el.ELException: Error reading 'name' on type future.oa.domain.Department_$$_jvstb8a_0
javax.el.BeanELResolver.getValue(BeanELResolver.java:110) org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:104) org.apache.el.parser.AstValue.getValue(AstValue.java:183) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
......
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:164) org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:285) org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185) future.oa.domain.Department_$$_jvstb8a_0.getName(Department_$$_jvstb8a_0.java) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
......
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struts.devMode=falsein your
WEB-INF/classes/struts.properties
file.解决方法:
解决懒载入问题。
方法一:(直接将懒载入关闭):
在 .hbm.xml 里
<!-- lazy="false"关闭懒载入 -->
<set name="children" cascade="delete"
lazy="false">
<key column="parentId"></key>
<one-to-many class="Department"/>
</set>
<key column="parentId"></key>
<one-to-many class="Department"/>
</set>
缺点:一些懒载入的长处也用不了了。
方法二:
在 web.xml里(注:要在 <!-- 配置struts2核心的过滤器 --> 之前)
<!-- 配置Spring的用于解决懒载入问题的过滤器 -->
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
然后在 *.hbm.xml里 再打开懒载入。