把这个aspx文件放在_layouts下面，直接通过js访问后台文件
<%@ Page Language="C#" %>
<%@ Register Tagprefix="SharePoint"
Namespace="Microsoft.SharePoint.WebControls"
Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>ECMAScript Client OM</title>
<script type="text/javascript">
function CallClientOM() {
var context = new SP.ClientContext.get_current();
this.website = context.get_web();
this.listCollection = website.get_lists();
context.load(this.listCollection, 'Include(Title, Id)');
context.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));
}
function onQuerySucceeded(sender, args) {
var listInfo = '';
var listEnumerator = listCollection.getEnumerator();
while (listEnumerator.moveNext())
{
var list = listEnumerator.get_current();
listInfo += 'List Title: ' + list.get_title() + ' ID: ' + list.get_id() + '\n';
}
alert(listInfo);
}
function onQueryFailed(sender, args) {
alert('request failed ' + args.get_message() + '\n' + args.get_stackTrace());
}
</script>
</head>
<body>
<form >Click here to Execute</a>
<SharePoint:FormDigest runat="server" />
</form>
</body>
</html>