我目前有一个列表框(搜索条件的一部分),它表示通过弹出窗口一次检索一个字符串的列表。但是,当弹出窗口关闭时,所选字符串永远不会添加到列表框中。(我已经确认隐藏变量已更新,如果您在执行搜索后离开页面并导航回来,列表框会正确显示我之前从弹出窗口中选择的字符串)。任何帮助将不胜感激!
<script type="text/javascript">
function selectBook(bookId, extendedBookName) {
var idInput = jQuery("#myForm\\:bookNames");
if (idInput.val() == "") {
idInput.val(extendedBookName);
} else {
idInput.val(idInput.val() + '@@@' + extendedBookName);
}
}
</script>
...
<h:form id="myForm">
...
<ui:define name="form-fields">
<h:selectOneListbox id="booksListBox" size="3" style="width:470px">
<s:selectItems var="_var" value="#{bean.searchCriteria.bookNames}" label="#{_var}" noSelectionLabel="" />
</h:selectOneListbox>
<h:outputLink onclick="return openNewWindow('#{bean.booksLookupUrl}?#{bean.bookLookupParameters}', 'book');"
target="_blank">
<h:inputHidden id="bookNames" value="#{bean.searchCriteria.bookNames}" converter="StringListConverter"/>
<h:outputText value="Add"/>
</h:outputLink>
</ui:define>
...
</h:form>
这是属于查找窗口的 javaScript。这会调用 selectBook 函数
function selectBook(bookId, extendedBookName) {
var extendedName = unescape(extendedBookName);
window.opener.selectBook(bookId, extendedName);
window.close();
}
而对于我的 Java 代码...
public class BookSearchCriteria implements Serializable {
...
private List<String> bookNames = new ArrayList<String>();
public List<String> getBookNames() {
return bookNames;
}
public void setBookNames(List<String> bookNames) {
this.bookNames = bookNames;
}
StringListConverter 代码...
@FacesConverter("myStringListConverter")
public class StringListConverter implements Converter {
// this is used as a regex, so choose other separator carefully
private static final String MY_SEPARATOR = "@@@";
@Override
public Object getAsObject(FacesContext context, UIComponent component,
String value) {
if (value == null) {
return new ArrayList<String>();
}
return new ArrayList<String>(Arrays.asList(value.split(MY_SEPARATOR)));
}
@Override
public String getAsString(FacesContext context, UIComponent component,
Object value) {
if (value == null) {
return "";
}
return join((List<String>) value, MY_SEPARATOR);
}
/**
* Joins a String list, src: http://stackoverflow.com/q/1751844/149872
*
* @param list
* @param conjunction
* @return
*/
public static String join(List<String> list, String conjunction) {
StringBuilder sb = new StringBuilder();
boolean first = true;
for (String item : list) {
if (first) {
first = false;
} else {
sb.append(conjunction);
}
sb.append(item);
}
return sb.toString();
}
}