ZK从组合框中获取所选项目

Question

我正在尝试获取combobox中的选定值，但它以ComboItem.How的形式返回。我可以以字符串的形式获取值吗？

<zscript>
  <![CDATA[
    String[] months = { "Ada", "Basic", "C", "C++", "Cobol", "Forth",
            "Fortran", "Go", "Groovy", "Haskell", "Java", "JavaScript", "Lisp",
            "Python", "Ruby", "Scala", "Scheme" };
  ListModel lmonths = new SimpleListModel(months);
]]></zscript>
                    <combobox id="searchCombo"
                        forward="onChange=onSearch" model="@{months}" >
<!-- 
                        <comboitem self="@{each='months'}"
                            label="@{months}" value="@{months}">
                        </comboitem>
 -->

                        </combobox>

这里是我的onSearch方法

public void onSearch(ForwardEvent event) {


        System.out.println(searchCombo.getSelectedItem());


    prodevt.search(searchCombo.getSelectedItem().toString());
        filterCbox.setChecked(true);



        AnnotateDataBinder binder = (AnnotateDataBinder) win.getVariable(
                "binder", true);

        binder.loadAll();

    }

Answer 1

我解决了它，就像

searchCombo.getSelectedItem().getValue().toString();

Answer 2

ZK的combobox数据绑定功能非常强大，

我创建了一个示例来同步组合框和列表框中的select数据

<?page title="new page title" contentType="text/html;charset=UTF-8"?>
<?init class="org.zkoss.zkplus.databind.AnnotateDataBinderInit" ?>
<zk>
<zscript>
  <![CDATA[
        String[] langs = { "ZK" ,"Ada", "Basic", "C", "C++", "Cobol", "Forth", 
                           "Fortran", "Go", "Groovy", "Haskell", "Java", 
                           "JavaScript","Lisp", "Python", "Ruby", "Scala",
                           "Scheme" 
                         };
        //(Optional) Default Select ZK 
    String things_i_have_selected = langs[0]; 
    ]]></zscript>
<hlayout>
    <combobox model="@{langs}" selectedItem="@{things_i_have_selected}" />

    <combobox model="@{langs}" selectedItem="@{things_i_have_selected}" />

    <listbox model="@{langs}" selectedItem="@{things_i_have_selected}"  
             rows="5" width="400px">
        <listitem self="@{each=String}">
            <listcell label="@{String}"></listcell>
        </listitem>
    </listbox>
</hlayout>
</zk>

​

​

我想说的是，您不需要获取选择项的值:)

参考文献

1. ZK Demo
2. ZK Essentials#Implementing Data Binding

Answer 3

searchCombo.getSelectedItem().getValue() -->获取所选ComboItem的值

searchCombo.getSelectedItem().getLabel() -->获取所选ComboItem的文本