java-ee – Struts2中的Multi select下拉列表

2023年10月1日 245次阅读 
<div class="select_wrap">
    <select name="sampleselect"  class="select_field" multiple="multiple" >

        <option>Select Id  </option>
        <s:iterator value="userList" var="usrList" status="s">
        <option value=<s:property value="#usrList"></s:property>><s:property value="#usrList"></s:property></option>

        </s:iterator>
    </select>
    </div>      
<br /><br />
            <s:submit value="Compliance Export" name="Export Data" align="left" action="exportExcelAction4"/>

usrList正在从数据库中填充

在我的动作课上

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

    public List<String> getSampleselect() {
        return sampleselect;
    }


    public void setSampleselect(List<String> sampleselect) {
        this.sampleselect = sampleselect;
    }

但是这个样本选择没有填充.

最佳答案 list属性用于获取可迭代源,而name属性用于设置所选项.还可以使用< s：select />标记为更干净(更容易)的代码.例如：

在struts.xml

<action name="firstAction" class="foo.bar.FirstAction">
    <result>firstPage.jsp</result>
</action>

<action name="secondAction" class="foo.bar.SecondAction">
    <result>secondPage.jsp</result>
</action>

FirstAction.java

private List<String> userList;

/* Getter and Setter */

public String execute(){
    // Load your data from database
    userList = getMyService().findUserList();
    return SUCCESS;
}

FirstPage.jsp

<s:form action="secondAction" >
    <div class="select_wrap">
        <s:select list = "userList"
                  name = "selectedItem"
              cssClass = "select_field"
              multiple = "multiple" />
    </div>

    <s:submit value="Post your selection to second Action" />
</s:form>

SecondAction.java

private String selectedItem;

/* Getter and Setter */ 

public String execute(){
    log.debug("Selected item is: " + selectedItem);
    return SUCCESS;
}

SecondPage.jsp

<div>
    Selected item is: <s:property value="selectedItem" />
</div>
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