classroom里面引用到building表中的主键，在java后台怎么添加数据到classroom表中
classroom映射文件<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
<class name="com.ssh.beans.Classroom" table="classroom" catalog="END">
<id name="cid" type="java.lang.Integer">
<column name="cid" />
<generator class="native" />
</id>
<many-to-one name="building" class="com.ssh.beans.Building" fetch="select">
<column name="bid" not-null="true"/>
</many-to-one>
<property name="floorid" type="java.lang.Integer">
<column name="floorid" not-null="true" />
</property>
<property name="roomno" type="java.lang.Integer">
<column name="roomno" not-null="true" />
</property>
<property name="enabletime" type="java.util.Date">
<column name="enabletime" length="0" not-null="true" />
</property>
<property name="disabletime" type="java.util.Date">
<column name="disabletime" length="0" not-null="true" />
</property>
</class>
</hibernate-mapping>
building的映射文件
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
<class name="com.ssh.beans.Building" table="building" catalog="END">
<id name="bid" type="java.lang.Integer">
<column name="bid" />
<generator class="native" />
</id>
<property name="bname" type="java.lang.String">
<column name="bname" length="30" not-null="true" />
</property>
<set name="classrooms" inverse="true">
<key>
<column name="bid" />
</key>
<one-to-many class="com.ssh.beans.Classroom" />
</set>
</class>
</hibernate-mapping>
前台的数据插入界面
<!-- 内容列表 -->
<s:form action="teacher/adda?id=bid" method="post">
<table width="98%" border="0" cellpadding="2" cellspacing="1" bgcolor="#D1DDAA" align="center" style="margin-top:8px">
<tr bgcolor="#E7E7E7" align='center'>
<td height="24" colspan="10" background="skin/images/tbg.gif"> 教室添加 </td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='#FCFDEE';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22" >
<td>教学楼名：
<s:select name="bid" list="#blist" listKey="bname" listValue="bname"></s:select>
</td>
</tr>
<s:hidden name="cid"></s:hidden>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='#FCFDEE';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22" >
<td>楼 层 号：
<s:textfield name="floorid"></s:textfield>
</td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='#FCFDEE';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22" >
<td>教 室 号：
<s:textfield name="roomno"></s:textfield></td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='#FCFDEE';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22" >
<td>可用时间：
<sx:datetimepicker name="enabletime"></sx:datetimepicker>
</td>
</tr>
<tr align='center' bgcolor="#FFFFFF" onMouseMove="javascript:this.bgColor='#FCFDEE';" onMouseOut="javascript:this.bgColor='#FFFFFF';" height="22" >
<td>拥挤时间：
<sx:datetimepicker name="disabletime"></sx:datetimepicker>
</td>
</tr>
<tr bgcolor="#FAFAF1" align="center">
<td height="28" colspan="10">
<s:submit value="提交"></s:submit>
<s:reset value="重置"></s:reset>
</td>
</tr>
</table>
Action里面的方法
public String add(){
System.out.println(id+"+++++++++++++++++++++++++++++++++++");
classroom.setBuilding(buildingDAO.findById(id));
classroomDAO.save(classroom);
return "success";
}
</s:form>
这是提交界面
这是报错信息
[framework] 2012-11-27 22:32:05,146 - com.opensymphony.xwork2.ognl.OgnlValueStack -840896 [http-8080-3] WARN com.opensymphony.xwork2.ognl.OgnlValueStack - Error setting expression 'id' with value '[Ljava.lang.String;@f8f25d'
ognl.MethodFailedException: Method "setId" failed for object com.ssh.actions.ClassroomAction@1ac54e6 [java.lang.NoSuchMethodException: com.ssh.actions.ClassroomAction.setId([Ljava.lang.String;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1265)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1454)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:85)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:28)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2225)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:65)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2225)
at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
at ognl.SimpleNode.setValue(SimpleNode.java:301)
at ognl.Ognl.setValue(Ognl.java:737)
at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:198)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:161)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:149)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:276)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:187)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
补充：Java , Eclipse
