首先,不使用Struts Ajax的標籤了,because:
道場插件已經過時
道場插件將Struts的被棄用2.1
如果你a現在重新啓動,你可以使用raw Dojo(今天在1.10
版本,而不是Struts2附帶的舊的,buggy 0.4.x
版本;但它可能會更容易遷移到jQuery,尤其是在Struts2-jQuery-plugin的幫助下。
你可以在Widgets菜單下看到它的Autocompleter的例子。
順便說一句,如果出於某種原因想要堅持使用舊的集成Dojo版本(例如,在處理大型和遺留項目時只進行最小限度更正),請確保正確使用它:返回有效的Json對象,發佈和訂閱權的議題等。如圖所示的例子從the documentation:
<sx:autocompleter name="autocompleter1" href="%{jsonList}"/>
<s:autocompleter name="test" list="{'apple','banana','grape','pear'}" autoComplete="false"/>
<sx:autocompleter name="mvc" href="%{jsonList}" loadOnTextChange="true" loadMinimumCount="3"/>
在autocompleter輸入的文本作爲參數傳遞給在「HREF」中指定的URL傳遞,像(文本是「struts」):http://host/example/myaction.do?mvc=struts
<form id="selectForm">
<sx:autocompleter name="select" list="{'fruits','colors'}" valueNotifyTopics="/changed" />
</form>
<sx:autocompleter href="%{jsonList}" formId="selectForm" listenTopics="/changed"/>
<sx:autocompleter href="%{jsonList}" id="auto"/>
<script type="text/javascript">
function getValues() {
var autoCompleter = dojo.widget.byId("auto");
//key (in the states example above, "AL")
var key = autoCompleter.getSelectedKey();
alert(key);
//value (in the states example above, "Alabama")
var value = autoCompleter.getSelectedValue();
alert(value);
//text currently on the textbox (anything the user typed)
var text = autoCompleter.getText();
alert(text);
}
function setValues() {
var autoCompleter = dojo.widget.byId("auto");
//key (key will be set to "AL" and value to "Alabama")
autoCompleter.setSelectedKey("AL");
//value (key will be set to "AL" and value to "Alabama")
autoCompleter.setAllValues("AL", "Alabama");
}
</script>
<script type="text/javascript">
dojo.event.topic.subscribe("/before", function(event, widget){
alert('inside a topic event. before request');
//event: set event.cancel = true, to cancel request
//widget: widget that published the topic
});
</script>
<sx:autocompleter beforeNotifyTopics="/before" href="%{#ajaxTest} />
<script type="text/javascript">
dojo.event.topic.subscribe("/after", function(data, request, widget){
alert('inside a topic event. after request');
//data : JavaScript object from parsing response
//request: XMLHttpRequest object
//widget: widget that published the topic
});
</script>
<sx:autocompleter afterNotifyTopics="/after" href="%{#ajaxTest}" />
<script type="text/javascript">
dojo.event.topic.subscribe("/error", function(error, request, widget){
alert('inside a topic event. on error');
//error : error object (error.message has the error message)
//request: XMLHttpRequest object
//widget: widget that published the topic
});
</script>
<sx:autocompleter errorNotifyTopics="/error" href="%{#ajaxTest}" />
<script type="text/javascript">
dojo.event.topic.subscribe("/value", function(value, key, text, widget){
alert('inside a topic event. after value changed');
//value : selected value (like "Florida" in example above)
//key: selected key (like "FL" in example above)
//text: text typed into textbox
//widget: widget that published the topic
});
</script>
<sx:autocompleter valueNotifyTopics="/value" href="%{#ajaxTest}" />