jsf批量删除

jsf批量删除
<input type="checkbox" id="checkAll" />

 <input type="checkbox" name="oids" id="oo"
          value="${project.ID}" />
<h:commandLink action="#{projectBean.deleteMultiProject}"
         styleClass="button" onclick="return

confirm('是否要确实要删除所选的记录？')">
         <h:outputText value="删除选中记录" />
        </h:commandLink>

projectBean
public String deleteMultiProject(){
   String[] ids=FacesUtils.getParamValues("oids");
   int[] oids=FacesUtils.getOids(ids);
   projectService.deleteMultiProject(oids);
  return listChunkProject();
 }

public void deleteMultiProject(int[] oids)
 {
//   System.out.print("oids"+oids);
  String hql="delete from Project  where ID in(:oids)";
  Query query=this.getSession().createQuery(hql.toString());
  List projectList=new ArrayList();
  for(int i=0;i<oids.length;i++)
  {
   projectList.add(new Integer(oids[i]));
  }
  query.setParameterList("oids",projectList);
  query.executeUpdate();
 }