[英]How to get ArrayList data from action class inside a javascript?
I'm gong to making an autocompleter using jquery autocompleter. 我很乐意使用jquery autocompleter创建一个自动完成器。 In my case I need to load some data from a method.
就我而言,我需要从方法中加载一些数据。 That method(return a list) has a parameter and I need to pass the textfield input as the method argument.
该方法(返回列表)具有一个参数,我需要将文本字段输入作为方法参数传递。 Is this possible?
这可能吗? If it is how can I do this?
如果是我该怎么办?
Method is, 方法是
public List<Item> getSuggestedData(String def) {
EntityManager em = getEntityManager();
try {
Query q = em.createQuery("select o from Item o WHERE o.itemName like :def");
q.setParameter("def", def + "%");
return q.getResultList();
} finally {
em.close();
}
}
index.jsp, index.jsp,
<script>
$(function() {
var availableTags = [/*I need to load data to here*/];
$( "#tags" ).autocomplete({
source: availableTags
});
});
</script>
<div class="ui-widget">
<s:textfield id="tags"/>
</div>
jQuery is a client side script and java code is on server side. jQuery是客户端脚本,而Java代码在服务器端。 You need to send a HTTP request from client to the server to get your list of tags.
您需要从客户端向服务器发送HTTP请求以获取标签列表。 You can do this by AJAX.
您可以通过AJAX执行此操作。 jQuery has a good support for AJAX.
jQuery对AJAX有很好的支持。
try this 尝试这个
$.ajax({
async:settings.Async,url:Url,cache:false,type:'POST',data:$("#tags").val()
}).done(function (result) {
$( "#tags" ).autocomplete({
source: result
});
});
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