我有一个应用程序,其中有一个级联下拉列表、一个简单的下拉列表和一个提交命令按钮。我希望通过从下拉列表中选择各种标准来在数据表中显示报告。一切正常,除非我希望从子下拉列表中选择标准。它不与托管 bean 中的值绑定(通过调试发现)。这是我的代码:xhtml:
<h:outputText value="Exchange"/>
<p:selectOneMenu style="width: 150px" value="#{reportBean.exchange}">
<f:selectItem itemLabel="--select--" itemValue="--select--"/>
<f:selectItem itemLabel="NSE" itemValue="nse"/>
<f:selectItem itemLabel="BSE" itemValue="bse"/>
<p:ajax update="sym" listener="#{reportBean.wow}"/>
</p:selectOneMenu>
<h:outputText value="Scrip Symbol :"/>
<p:selectOneMenu value="#{reportBean.scripID}" id="sym" style="width: 100px">
<f:selectItem itemLabel="All" itemValue="0"/>
<f:selectItems var="scrip" value="#{reportBean.sl}" itemLabel="#{scrip.scripSymbol}" itemValue="#{scrip.scripID}"/>
</p:selectOneMenu>
<h:outputText value="Order Type :"/>
<p:selectOneMenu style="width: 100px" value="#{reportBean.orderType}">
<f:selectItem itemLabel="All" itemValue="All"/>
<f:selectItem itemLabel="Buy" itemValue="B"/>
<f:selectItem itemLabel="Sell" itemValue="S"/>
</p:selectOneMenu>
<p:commandButton ajax="true" update="dt" value="Submit" action="#{reportBean.getTradeByUserName()}" type="submit"/>
</h:panelGrid>
<p:dataTable id="dt" var="trade" widgetVar="scripTab"
emptyMessage="No trade found with given criteria"
value="#{reportBean.tradeList}"
paginator="true" paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink}"
rowsPerPageTemplate="3,5,10" rows="3" >
<p:column>....
托管bean代码:
public void wow()
{
sl=getAllScripByExchange(exchange);
}
public Integer getScripID() {
return scripID;
}
public void setScripID(Integer scripID) {
MasterScrip sm =getScripByID(scripID);
if(sm!=null)
this.scripSymbol=sm.getScripSymbol();
this.scripID = scripID;
}
public List<TradeStock> getTradeList() {
return tradeList;
}
public void setTradeList(List<TradeStock> tradeList) {
this.tradeList = tradeList;
}
public List<service.TradeStock> getTradeByUserName()
{
HttpServletRequest request = (HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest();
HttpSession session = request.getSession(true);
String uname = session.getAttribute("uname").toString();
tradeList= getTradeReport(scripID, uname, exchange, orderType);
return tradeList;
}
豆方法:
@Override
public Collection<TradeStock> getTradeReport(Integer scripID, String uname, String exchange, String tradeType) {
String strQuery = null;
strQuery = "Select t from TradeStock t where t.userName.userName = :userName ";
if(! exchange.equalsIgnoreCase("All"))
{
strQuery += " and t.scripID.exchange = '" + exchange + "'";
}
if(scripID>0)
{
strQuery += " and t.scripID.scripID = " + scripID;
}
if(! tradeType.equalsIgnoreCase("All"))
{
strQuery += " and t.orderID.buySell = '" + tradeType + "'";
}
Collection<TradeStock> c = em.createQuery(strQuery).setParameter("userName",uname).getResultList();
return c;
}
为什么值不绑定到 bean 道具?我该如何解决?(我担心的是昨天相同的代码工作但今天当我运行相同的代码时它开始困扰我)。
编辑:面孔配置
<faces-config version="2.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd">
<managed-bean>
<managed-bean-name>userReportBean</managed-bean-name>
<managed-bean-class>UserReportBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<from-view-id>/adminpages/editScrip.xhtml</from-view-id>
<navigation-case>
<from-action>#{manageScrip.updateScrip}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/adminpages/manageScrip.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/adminpages/addScrip.xhtml</from-view-id>
<navigation-case>
<from-action>#{manageScrip.addScrip}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/adminpages/manageScrip.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/adminpages/manageScrip.xhtml</from-view-id>
<navigation-case>
<from-action>#{manageScrip.returnEdit}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/adminpages/editScrip.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<managed-bean>
<managed-bean-name>equityBean</managed-bean-name>
<managed-bean-class>beans.equityBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<managed-bean>
<managed-bean-name>reportBean</managed-bean-name>
<managed-bean-class>beans.reportBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
</faces-config>