最近做了一個jquery取json數據的小例子，拿出來與大家分享。

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后臺：

public class AutoAction extends DispatchAction {
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?public void aa(ActionMapping mapping, ActionForm form,
???HttpServletRequest request, HttpServletResponse response)
???throws Exception {
??List list = new ArrayList();??
??list.add( "first" );??
??list.add( "second" );
??list.add( "fir" );??
??list.add( "fff" );
??JSONArray jsonArray = JSONArray.fromObject( list );??
??response.setCharacterEncoding("utf-8");??? //傳送中文時防止亂碼
??response.getWriter().print(jsonArray);? //傳輸json數據

?}
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}

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struts-config.xml配置：

<action
????? scope="request"
????? parameter="method"
????? path="/autoAction"
????? type="com.lhy.AutoAction">
????? </action>

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前臺：

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js:

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<script type="text/javascript">?????
???? function get(){
????????
????????? $.getJSON(" http://localhost:8888/test/autoAction.do ",
????? {method:"aa"},??? //傳遞參數
???? function(data){
???? alert(data);
???? var s="";
???? $.each(
?????? data, function(i){
????????? s=s+data[i]+"|";
??????? }
???? )
??? $("#t").val(s);
??});
??
???? }
????
?</script>

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jsp:

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?<button id="tmp" onclick="get()">點擊得值 </button>
? <textarea rows="10" cols="20" id="t">

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效果圖：

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?轉換json數據所用jar包在下面

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json jquery ajax struts