SEAM+AJAX4JSF 实现动态菜单

chicochen

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Seam JBoss UI EJB XHTML

的确方便了很多！

xml 代码

<tr>
<td>
<s:decorate template="/page/tiles/formFieldDecorate.xhtml">
<ui:define name="label">分类1</ui:define>
<h:selectOneMenu value="#{_catalog1}" converter="#{entityConverter}">
<s:selectItems value="#{appCache.catalog1List}"
var="cata1" label="#{cata1.name}" noSelectionLabel="请选择"/>
<a4j:support event="onchange"
actionListener="#{courseMaintAction.loadCata2ByCata1}"
reRender="cata2Area" requestDelay="0" ajaxSingle="true" />
</h:selectOneMenu>
</s:decorate>
</td>
</tr>
<tr>
<td>
<s:decorate template="/page/tiles/formFieldDecorate.xhtml">
<ui:define name="label">分类2</ui:define>
<a4j:outputPanel id="cata2Area">
<h:selectOneMenu value="#{_catalog2}" converter="#{entityConverter}">
<s:selectItems value="#{_catalog2List}" var="cata2" label="#{cata2.name}" noSelectionLabel="请选择" />
</h:selectOneMenu>
</a4j:outputPanel>
</s:decorate>
</td>
</tr>

java 代码

//$Id: NavigateeAction.java,v 1.1 2007/02/21 11:09:46 chicochen Exp $
package com.eastidea.yctraining.action;
import static org.jboss.seam.ScopeType.SESSION;
import java.util.List;
import java.util.Set;
import javax.ejb.Remove;
import javax.ejb.Stateful;
import org.jboss.seam.annotations.Begin;
import org.jboss.seam.annotations.Destroy;
import org.jboss.seam.annotations.End;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.web.RequestParameter;
import com.eastidea.yctraining.action.base.BaseMaintActionImpl;
import com.eastidea.yctraining.entity.Catalog1;
import com.eastidea.yctraining.entity.Catalog2;
import com.eastidea.yctraining.entity.Course;
import com.eastidea.yctraining.entity.Organization;
import com.eastidea.yctraining.service.CourseMaintService;
@Stateful
@Name("courseMaintAction")
public class CourseMaintActionImpl extends BaseMaintActionImpl implements CourseMaintAction {
private static final long serialVersionUID = -7494995399977805979L;
@In(value="courseMaintService", create=true)
private CourseMaintService courseMaintService;
@In(required = false, scope = SESSION)
protected Organization currentOrg;
//
@RequestParameter
private Long _courseid;
@In(required = false)@Out(required = false)
private Catalog1 _catalog1;
@In(required = false)@Out(required = false)
private Catalog2 _catalog2;
@In(required = false)@Out(required = false)
private Course _course;
@In(required = false)@Out(required = false)
private Set<Catalog2> _catalog2List;
@Destroy @Remove
public void destroy() {
}
@Begin(join=true)
public void loadCata2ByCata1(){
_catalog2List = _catalog1.getCata2Collection();
}
@Begin(join=true)
public void create() {
myAct = "create";
_course = new Course();
}
@End
public void save() {
if (myAct.equals("true")) {
_course.setCatalog1(_catalog1);
_course.setCatalog2(_catalog2);
_course.setOrganization(currentOrg);
courseMaintService.saveCourse(_course);
}
}
public void edit() {
int i =0;
i++;
}
public void update() {
// TODO Auto-generated method stub
}
public void view() {
// TODO Auto-generated method stub
}
public void delete() {
// TODO Auto-generated method stub
}
public void cancel() {
// TODO Auto-generated method stub
}
}

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在做一个seam的项目，共同学习

2007-08-24 22:17
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分类:企业架构
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1 楼 ssuhvs 2008-06-05

版主您好，我是个初学者，能不能告诉我们 converter="#{entityConverter}" 中的entityConverter是在哪定义的？能不能贴出来看一下呀。我看到别人用<convertEntity/> 是不是一个效果呀。

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