Question

我想从我的数据库填充一个selectonemenu，但总是列表为空这是我的代码：

public ArrayList<String> FindListKpi(Integer userid)
 {
  ArrayList<String> usrpr=new ArrayList<String>();
  try{

        EntityTransaction entr=em.getTransaction();
        entr.begin();

        javax.persistence.Query multipleSelect= em.createQuery("select k.kpiName FROM ProfilUser p, Kpi k, AssociationKpiProfil a WHERE p= a.profilUser and a.kpi=k and  p.profilUserId= :w" );
   multipleSelect.setParameter("w", userid);
   /* to tranform list to an arraylist*/
   List usrpro =  new LinkedList();
   usrpro= multipleSelect.getResultList();
   usrpr = new ArrayList(usrpro);

       entr.commit(); 
       System.out.println("listttttttttttttttttttttttt"+usrpr.toString());
  return usrpr;
      }
      catch (Exception e )
      {
        System.out.println(e.getMessage());
        System.out.println("error");
      }
      finally {
        em.close();
    } 

  return usrpr;

 }

填充选择框的功能：

public List<SelectItem> getMyListKPIs()  {
FindKpi fkpi =new FindKpi();

if (MyListKPI == null) {
MyListKPI = new ArrayList<SelectItem>();

for (String val : fkpi.FindListKpi(iduser)) {
MyListKPI.add(new SelectItem(val));
}
}
 return MyListKPI;
}

结果： listttttttttttttttttttttttt []

我测试了我的方法“FindListKpi”，它运行正常：

public static void main(String[] args) {
System.out.println("list"+ kpilist.FindListKpi(1));
}

结果：

list [Number Of Closed issues, Number Of Opened issues]

所以方法getMyListKPIs中的问题，实际上错误完全是在“iduser”的默认情况下，这个例子我从另一个bean传递了它的值：

 <managed-bean>
 <managed-bean-name>ToolsKPI</managed-bean-name> 
 <managed-bean-class>DAOKPI.ToolsKPI</managed-bean-class>
 <managed-bean-scope>session</managed-bean-scope> 
 <managed-property>
<property-name>iduser</property-name>
<property-class>java.lang.Integer</property-class>
<value>#{BeanTools.iduser}</value>
</managed-property>
</managed-bean>

Answer 1

你好我已经解决了错误在文件faces-config的问题，我的托管所有权是错误的，实际上是为了保存配置属性的值：

ID用户为java.lang.Integer ＃{} BeanTools.iduser

如何填写selectonemenu JSF

1 个答案: