跨域脚本ColdFusion问题

Question

我有一个愚蠢的问题，但我是个新手。我正在尝试使用extjs4库进行跨域请求（通过ajax）。作为服务器端语言，我使用ColdFusion。到目前为止，我写的所有代码都在同一个域上工作。我需要将放置在Apache服务器上的静态文件（javascript、css和html）和放置在Tomcat（openbd）上的动态内容（cfm、CFC）分开。因此，前端脚本（主要在Apache->javascript上）在Tomcat上发出请求以获取内容。这肯定是跨域请求。

我用来提取数据（CFC）的代码块是：

<cfcomponent output="false">
<cfprocessingdirective pageencoding="utf-8">
<cfset setEncoding("URL", "utf-8")>
    <cffunction name="getContent" access="remote" returnFormat="JSON" output="false" >  
        <cfargument name="start" default="0"/>    
        <cfargument name="limit" default="1000"/>
        <cfargument name="id" default="0" required="false" type="numeric">
        <cfargument name="model" default="" required="false" type="any">
        <cfset var arrNomoi = ArrayNew(1)>
        <cfset var stcReturn = "">
        <!--- When going back to base state, ExtJS will make the function call with start set to 0. If this is the case
        we set it to 1 --->
        <cfset Arguments.start = Arguments.start + 1>

        <cfif arguments.model EQ 'n_2664_1998'>
            <cfquery name="getNomoi" datasource="ktimatologio">
                SELECT CONCAT_WS('_',id,model) AS id, id AS 'id1', CONCAT_WS(' ',title,fek,date) AS 'title', description, body, model
                FROM n_2664_1998
                WHERE id = #arguments.id#
                ORDER BY id ASC
            </cfquery>
        <cfelseif arguments.model EQ 'n_2308_1995'>
            <cfquery name="getNomoi" datasource="ktimatologio">
                SELECT CONCAT_WS('_',id,model) AS id, id AS 'id1', CONCAT_WS(' ',title,fek,date) AS 'title', description, body, model
                FROM n_2308_1995
                WHERE id = #arguments.id#
                ORDER BY id ASC
            </cfquery>
        <cfelseif arguments.model EQ 'n_3889_2010'> 
            <cfquery name="getNomoi" datasource="ktimatologio">
                SELECT CONCAT_WS('_',id,model) AS id, id AS 'id1', CONCAT_WS(' ',title,fek,date) AS 'title', description, body, model
                FROM n_3889_2010
                WHERE id = #arguments.id#
                ORDER BY id ASC
            </cfquery>  
        </cfif>
        <cfset arrNomoi = convertQueryToExtJS(getNomoi,Arguments.start,Arguments.limit)>
        <cfset stcReturn = {"data"=arrNomoi,dataset=#getNomoi.RecordCount#}>
        <cfreturn stcReturn>
    </cffunction>
    <cffunction name="convertQueryToExtJS" access="public" hint="Convert Query to JSON usable by ExtJS Grid" returntype="array">
        <cfargument name="qryData" type="query" required="true" hint="Query to convert">
        <cfargument name="intStart" type="numeric" required="true" hint="Start of Result Set">
        <cfargument name="intLimit" type="numeric" required="true" hint="How many records to return">
        <!--- For the Array --->    
        <cfset var i = 1>        
        <cfset var end = ((Arguments.intStart) + arguments.intLimit)-1>
        <cfset var arrNomoi = ArrayNew(1)>
        <cfloop query="qryData" startrow="#Arguments.intStart#" endrow="#end#">        
            <cfset stcNomoi = StructNew()>
            <cfset stcNomoi['id'] = #qryData.id#>
            <cfset stcNomoi['id1'] = #qryData.id1#>
            <cfset stcNomoi['title'] = #qryData.title#>
            <!---<cfset stcNomoi['fek'] = #qryData.fek#>
            <cfset stcNomoi['date'] = #qryData.date#>--->
            <cfset stcNomoi['description'] = #qryData.description#>
            <cfset stcNomoi['body'] = #qryData.body#>
            <cfset stcNomoi['model'] = #qryData.model#>
            <cfset arrNomoi[i] = stcNomoi>
            <cfset i = i + 1>            
        </cfloop>

        <cfreturn arrNomoi>
    </cffunction>
</cfcomponent>

问题是：如何将上面的函数包装成一个变量（名为"回调"）并发布到客户端？

我在PHP上看到过类似的代码块，但我不明白。下面是PHP代码块：

<?php
$callback = $_REQUEST['callback'];
// Create the output object.
$output = array('id' => 1, 'url' => 'loianegroner.com');
//start output
if ($callback) {
header('Content-Type: text/javascript');
echo $callback . '([' . json_encode($output) . ']);';
} else {
header('Content-Type: application/x-json');
echo json_encode($output);
} 
?>

恕我直言，

Tom

希腊

Answer 1

看看这两个文件：

index.cfm是您向其提交AJAX请求的处理程序，它将返回JSON结果

http://websvn.openbd.org/websvn/filedetails.php?repname=OpenBD&路径=%2Trunk%2Web应用程序%2Manual%2API%2Findex.cfm

index.cfm与该CFC交互以获取信息并返回结果。

http://websvn.openbd.org/websvn/filedetails.php?repname=OpenBD&路径=%2Trunk%2Webapp%2Manual%2API%2Findex.cfc

当我编写这个API包装时，我遇到了returnFormat=JSON 的问题