Jquery级联问题，数据后端已取到，在页面上展示不出来

Question

如题  
 代码如下
<select name="chaPart" id="chaPart" style="width: 240px"
value="listChannal">
<c:if test="${listChannal != null}">
<c:forEach items="listChannal" var="c">
<option value="${c.channalID}">
${listChannal.title}
</option>
</c:forEach>
</c:if>
</select>
现在后端已经取到了
运行结果进入Action
Hibernate: select tbwccity0_.cityCode as cityCode13_, tbwccity0_.province as province13_, tbwccity0_.name as name13_, tbwccity0_.isEnable as isEnable13_, tbwccity0_.memo as memo13_, tbwccity0_.createdDate as createdD6_13_, tbwccity0_.lastModifiedDate as lastModi7_13_ from Tb_WC_Mob_City tbwccity0_
开始查询频道
0755
Hibernate: select distinct tbwcchanna1_.ID as ID17_, tbwcchanna1_.channalID as channalID17_, tbwcchanna1_.title as title17_, tbwcchanna1_.pictureID as pictureID17_, tbwcchanna1_.pressPictureID as pressPic5_17_, tbwcchanna1_.focusPictureID as focusPic6_17_, tbwcchanna1_.property as property17_, tbwcchanna1_.displayOrder as displayO8_17_, tbwcchanna1_.memo as memo17_, tbwcchanna1_.createdDate as created10_17_, tbwcchanna1_.lastModifiedDate as lastMod11_17_ from Tb_WC_Mob_ChaSec tbwcchasec0_, Tb_WC_Mob_Channal tbwcchanna1_ where tbwcchasec0_.channalID=tbwcchanna1_.channalID and tbwcchasec0_.cityCode=? order by tbwcchanna1_.displayOrder
[com.covics.model.TbWcChannal@1e35ecd, com.covics.model.TbWcChannal@64e5b2, com.covics.model.TbWcChannal@2445d7]
2010-1-6 14:21:57 org.apache.catalina.core.ApplicationDispatcher invoke
严重: Servlet.service() for servlet jsp threw exception
javax.el.PropertyNotFoundException: Property 'channalID' not found on type java.lang.String
at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:193)
at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:170)
at javax.el.BeanELResolver.property(BeanELResolver.java:279)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:60)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at org.apache.el.parser.AstValue.getValue(AstValue.java:114)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:923)
at org.apache.jsp.maincate_jsp._jspx_meth_c_005fforEach_005f2(maincate_jsp.java:358)
at org.apache.jsp.maincate_jsp._jspx_meth_c_005fif_005f0(maincate_jsp.java:322)
at org.apache.jsp.maincate_jsp._jspService(maincate_jsp.java:175)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:154)
at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
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.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.DefaultActio[com.covics.model.TbWcChannal@1e35ecd, com.covics.model.TbWcChannal@64e5b2, com.covics.model.TbWcChannal@2445d7]   是listChannal的值  
   报个字段的错误   字段我在后端取没问题  在前端取就出这个  我看数据库的字段不下10遍了   请各位大哥给点意见  真的找不出是什么原因  

Answer 1

<c:forEach items="${listChannal}" var="c"> 
<option value="${c.channalID}"> 
${c.title} 
</option> 
</c:forEach>

Answer 2

个人认为：
这里的${c.channalID}应该是POJO里Channal类里的属性
不是指数据库里面得字段

Answer 3

可能是这2个地方命名不一致，你误用了数据库里的字段了
猜想channal.xml里的
<property name="channalID" type="java.lang.String">
            <column name="channalID" length="1" />
        </property>
这里已经映射好了，所以你就不能（也不需要）用数据库里的字段了
而应该用Chanal类的属性

Answer 4

 谢谢  问题是这样的  但是根本原因还是页面上面展示不出来。？  错也不报了  是不是jquery不能访问本身页面？

Answer 5

开始查询频道
020
Hibernate: select distinct tbwcchanna1_.ID as ID17_, tbwcchanna1_.channalID as channalID17_, tbwcchanna1_.title as title17_, tbwcchanna1_.pictureID as pictureID17_, tbwcchanna1_.pressPictureID as pressPic5_17_, tbwcchanna1_.focusPictureID as focusPic6_17_, tbwcchanna1_.property as property17_, tbwcchanna1_.displayOrder as displayO8_17_, tbwcchanna1_.memo as memo17_, tbwcchanna1_.createdDate as created10_17_, tbwcchanna1_.lastModifiedDate as lastMod11_17_ from Tb_WC_Mob_ChaSec tbwcchasec0_, Tb_WC_Mob_Channal tbwcchanna1_ where tbwcchasec0_.channalID=tbwcchanna1_.channalID and tbwcchasec0_.cityCode=? order by tbwcchanna1_.displayOrder
市政服务----114
便民服务----115
消费服务----117
出行交通----116
政务信息----119
更多----118
餐饮----120
娱乐----121 这是后台呈现出来的数据    在页面上面现在是
<select name="chaPart" id="chaPart" style="width: 240px"
value="listChannal">
<c:forEach items="${listChannal}" var="listChannal">
<option id="${listChannal.channalID}">
${listChannal.title}
</option>
</c:forEach>
</select>
 取不出  不报错