如何从Struts 2中的选择标记映射多个值？

Question

我在我的Struts2 web应用程序中有一个多选组合。我使用ui-multisection组件。当我选择并提交值"1"和"2"，然后在我的操作类中检查它，只设置了最后一个选定的值。我应该如何设置所有选定的值？

JSP文件：

<%@ taglib prefix="s" uri="/struts-tags"%> 
<link rel="stylesheet" 
    href="<s:url value="/css/jquery.multiselect.css"/>" type="text/css" /> 
<link rel="stylesheet" 
    href="<s:url value="/css/jquery.multiselect.filter.css"/>" 
    type="text/css" /> 
<link rel="stylesheet" 
    href="<s:url value="/css/themes/base/jquery.ui.theme.css"/>" 
    type="text/css" /> 
<script type="text/javascript" 
    src="<s:url value="/js/jquery-1.9.1.min.js" />"></script> 
<script type="text/javascript" 
    src="<s:url value="/js/jquery-ui.min.js" />"></script> 
<script type="text/javascript" 
    src="<s:url value="/js/jquery.multiselect.min.js" />"></script> 
<script type="text/javascript" 
    src="<s:url value="/js/jquery.multiselect.filter.js" />"></script> 


<script language="javascript"> 
    $(function() { 

     $("select").multiselect({ 
      multiple : true, 
      selectedList : 4, 
      noneSelectedText : 'Tous', 
      height : 180 
     }); 

     $("select").multiselect().multiselectfilter(); 
    }); 
</script> 
<s:form id="idForm" action="testOMB.do" name="myForm"> 

    <div class="contentTable"> 
     <div class="tbl"> 

      <table width="100%"> 
       <tr> 
        <td><s:select id="idCombo1" multiple="multiple" 
          list="listItems" name="listIdSelected" 
          value="listIdSelected" listKey="id" listValue="label" 
          emptyOption="true" /></td> 
       </tr> 
      </table> 
     </div> 
    </div> 

    <div class="bloc_action"> 
     <s:submit cssClass="btn_action" value="TEST OMB" /> 
    </div> 
</s:form> 

Action类：

package com.omb.controller.report; 

import java.util.ArrayList; 
import java.util.List; 

import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 
import org.springframework.transaction.annotation.Isolation; 
import org.springframework.transaction.annotation.Propagation; 
import org.springframework.transaction.annotation.Transactional; 

import com.omb.ui.item.Item; 

import com.opensymphony.xwork2.ActionSupport; 
import com.opensymphony.xwork2.Preparable; 

@SuppressWarnings("serial") 
public class MyAction extends ActionSupport implements Preparable { 

    Log log = LogFactory.getLog(MyAction.class); 

    private List<Item> listItems = new ArrayList<String>(); 
    private List<String> listIdSelected = new ArrayList<String>(); 

    public void prepare() throws Exception { 
     listItems.add(new Item("1", "Item 1")); 
     listItems.add(new Item("2", "Item 2")); 
     listItems.add(new Item("3", "Item 3")); 
     listItems.add(new Item("4", "Item 4")); 
    } 

    @Transactional(propagation = Propagation.REQUIRED, isolation = Isolation.DEFAULT, readOnly = true) 
    public String testOMB() throws Exception { 
     log.debug("listIdSelected = " + listIdSelected.size()); 
     return SUCCES; 
    } 

    public List<Item> getListItems() { 
     return this.listItems; 
    } 

    public void setListItems(List<Item> listItems) { 
     this.listItems = listItems; 
    } 

    public List<String> getListIdSelected() { 
     return this.listIdSelected; 
    } 

    public void setListIdSelected(List<String> listIdSelected) { 
     this.listIdSelected = listIdSelected; 
    } 


} 

的struts.xml文件：

?xml version="1.0" encoding="UTF-8" ?> 

<!DOCTYPE struts PUBLIC 
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" 
    "http://struts.apache.org/dtds/struts-2.0.dtd"> 
<struts> 
    <constant name="struts.devMode" value="false" /> 
    <constant name="struts.action.extension" value="do" /> 
    <constant name="struts.custom.i18n.resources" 
     value="com.omb.i18n.StrutsResourceBundle" /> 
    <constant name="struts.objectFactory" value="spring" /> 
    <constant name="struts.objectFactory.spring.autoWire" value="name" /> 
    <constant name="struts.i18n.encoding" value="ISO-8859-1" /> 
    <constant name="struts.i18n.reload" value="false" /> 
    <constant name="struts.configuration.xml.reload" value="false" /> 
    <constant name="struts.locale" value="fr" /> 
    <constant name="struts.multipart.maxSize" value="100000000000" /> 
    <constant name="struts.enable.SlashesInActionNames" value="true" /> 
    <constant name="struts.mapper.alwaysSelectFullNamespace" value="false"/> 

    <constant name="struts.codebehind.classSuffix" value="Controller"/> 
    <constant name="struts.codebehind.action.checkImplementsAction" value="false"/> 
    <constant name="struts.codebehind.action.checkAnnotation" value="false"/> 
    <constant name="struts.codebehind.action.defaultMethodName" value="index"/> 
    <constant name="struts.configuration.classpath.defaultParentPackage" value="rest-default" /> 

    <package name="default" extends="tiles-default" namespace="/"> 

     <interceptors> 

      <interceptor name="userAware" 
       class="com.omb.interceptor.UserAwareInterceptor" /> 

      <interceptor name="params-filter" 
       class="com.opensymphony.xwork2.interceptor.ParameterFilterInterceptor" /> 

      <interceptor-stack name="defaultStack"> 
       <interceptor-ref name="exception" /> 
       <interceptor-ref name="alias" /> 
       <interceptor-ref name="servletConfig" /> 
       <interceptor-ref name="i18n" /> 
       <interceptor-ref name="chain" /> 
       <interceptor-ref name="modelDriven" /> 
       <interceptor-ref name="fileUpload"> 
        <param name="maximumSize">11204928</param> 
       </interceptor-ref> 
       <interceptor-ref name="staticParams" /> 
       <interceptor-ref name="conversionError" /> 
       <interceptor-ref name="params" /> 
       <interceptor-ref name="prepare" /> 
       <interceptor-ref name="validation" /> 
       <interceptor-ref name="workflow" /> 
       <interceptor-ref name="userAware" /> 

      </interceptor-stack> 

     </interceptors> 

     <default-interceptor-ref name="defaultStack" /> 

     <global-results> 
      <result name="technicalError" type="chain"> 
       errorAction 
      </result> 
      <result name="sessionInvalidError" type="tiles"> 
       sessionInvalid 
      </result> 
      <result name="blank" type="tiles">blank</result> 
     </global-results> 

     <global-exception-mappings> 
      <exception-mapping exception="java.lang.Exception" 
       result="technicalError" /> 
      <exception-mapping 
       exception="com.omb.service.exception.UserSessionInvalidException" 
       result="sessionInvalidError" /> 

     </global-exception-mappings> 

     <action name="errorAction" 
      class="com.omb.controller.ErrorAction"> 
      <result name="success" type="tiles">errorTile</result> 
     </action> 

     <action name="*Cache" 
      class="com.omb.controller.CacheAction" method="{1}"> 
      <result name="success" type="tiles">resultCache</result> 
      <result name="input" type="tiles">inputCache</result> 
     </action> 

     <action name="*Login" 
      class="com.omb.controller.LoginAction" method="{1}"> 
      <result name="success" type="tiles">login</result> 
      <result name="password" type="tiles">changePassword</result> 
     </action> 

     <action name="*Welcome" 
      class="com.omb.controller.WelcomeAction" method="{1}"> 
      <result name="success" type="tiles">welcome</result> 
      <result name="report" type="redirectAction"> 
       <param name="namespace">/report</param> 
       <param name="actionName">perimetersReport</param> 
      </result> 
     </action> 

    </package> 

    <package name="report" extends="default" namespace="/report"> 
     <action name="*Action" 
      class="com.omb.controller.report.MyAction" 
      method="{1}"> 
      <result name="succes" type="tiles">succesTile</result> 
     </action> 
    </package> 
</struts> 

Answer 1

我应该怎么做才能获得所有选定的值？

您应该制作一个select标签以接受多个选项。这通过multiple="true"在struts select标记中完成。那么你的拦截器堆栈是不完整的，因为multiselect interceptor丢失。在fileupload拦截器参考之后，您应该将<interceptor-ref name="multiselect"/>添加到拦截器堆栈。

Answer 2

试着改变

private List<String> listIdSelected = new ArrayList<String>(); 

到

private List<Integer> listIdSelected = new ArrayList<Integer>(); 

，因为你的getter和setter都是这样的。