Question

我对这个博客比较陌生，但在提出问题之前已做过一些研究。我是网络应用程序开发的新手。我使用的是JSF 2.2，jdk 1.7，oracle 11g，富脸，GlassFish 4.0和netbeans 7.3.1。我正在尝试从rich:pickList中选择项目并将其添加到目标列表中。单击提交按钮时，应执行与所选项对应的方法。以下是我到目前为止所做的一瞥：

JSF PAGE：

<table width="240" height="235" align="center"> 
<tr height="30">
<td width="20" height="30" align="LEFT">
<td width="20" height="30" align="LEFT">
<rich:pickList listHeight="225" listWidth="145" value="#  {usermanager.selectedOption}" id="message" required="true" >      
<f:selectItems value="#{usermanager.selectedValue}"   /> 
</rich:pickList>          
      <h:message for="message" style="color:red" ></h:message>
 </td>
</tr>            
</table>
<br/>  
<table  width="240" height="30" align="center">
<tr height="30" align="center" >
<td width="60" height="30" align="center" >
    <h:commandButton value="Submit" action="#{usermanager.submit()}"  > 
</h:commandButton>   
</td> 
<td width="100" align="center">Export to Excel
<h:commandButton image="Excel.png" action="#{usermanager.resultTicker()}"  value="" />
       </td>
</tr>
</table>

以下是Backing Bean的相关部分：(@Named(value = "usermanager")@SessionScoped)

private static Map<String,Object> loadValue;
static{
loadValue = new LinkedHashMap<String,Object>();
loadValue.put("IR: Cap Vol", "1"); //label, value
loadValue.put("IR: Swaptions Vol", "2");
loadValue.put("IR: Interest Rate", "3");
loadValue.put("FX: Cap Vol", "4");
loadValue.put("FX: Swaptions Vol", "5");
loadValue.put("FX: Interest Rate","6");
loadValue.put("Commodities: Cap Vol", "7");
loadValue.put("Commodities: Swaptions Vol", "8");
loadValue.put("Commodities: Interest Rate", "9");
}

private String[] selectedOption={"IR: Cap Vol","IR: Swaptions Vol","IR: Interest   Rate","FX: Cap Vol","FX: Swaptions Vol","FX: Interest Rate","Commodities: Cap   Vol","Commodities: Swaptions Vol","Commodities: Interest Rate"};

 public String[] getSelectedOption() {

    return selectedOption;
}

public void setSelectedOption(String[] selectedOption) {
    this.selectedOption = selectedOption;
}
public Map<String,Object> getSelectedValue() throws SQLException,  FileNotFoundException, IOException, Exception {

switch(getSelectedOption()[0])  
    {
        case "1": 
      {
        loadIRCapVol();
         break;
      }

        case "2": 
    {
     loadIRSwaptionVol();
          break;
  } 

    case "3": 
    {
     loadIRInterestRate();
          break;
  } 
    case "4": 
    {
     //method              
     break;
  } 
    ......upto case "9":
  }           

 return loadValue;
}

//This method corresponds to list item "IR:Cap Vol"
public  void loadIRCapVol() {

//JDBC connection which is executed and tables are populated in the DB from CSV file. I have used FileReader, BufferedReader and executeUpdate here.

}

//This method corresponds to list item "IR:Swaption Vol"
public void loadIRSwaptionVol() {

//JDBC connection which is executed and tables are populated in the DB from CSV file. I have used FileReader, BufferedReader and executeUpdate here.
}

//This method corresponds to list item "IR:Interest Rate"
public void loadIRInterestRate() throws SQLException,FileNotFoundException,     IOException, Exception {
//JDBC connection which is executed and tables are populated in the DB from CSV file. I have used FileReader, BufferedReader and executeUpdate here.
}

......similar methods for the remaining 6 items

public String submit() throws SQLException, FileNotFoundException,IOException,       Exception{
return "Explore";
}

摘要是用户从列表中选择项目（“IR：Cap Vol”，“IR：Swaptions Vol等”）并添加到目标列表（右侧列表），并在单击提交按钮时对应的方法到选定的列表项目被执行。

代码已经存在许多缺陷。我已经在Switch-Case中硬编码了getSelectedOption值（这应该是动态的，但由于编程经验有限，还没有想出这样做的方法）。我在此处使用Linked Hash-Map通过查阅此博客添加列表项：http://www.mkyong.com/jsf2/jsf-2-multiple-select-listbox-example/

我怀疑交换机案件将来会起作用，因为我用它来将代码显示为高级管理层的工作原型。

伙计们，如果有人能帮助我，我会感谢这个博客社区。

无法从JSF 2.2中的提交按钮调用多个方法

0 个答案: