我使用 ColdFusion 和 jQuery Ajax 没有得到返回数据

Question

我收到的回复是空白的。我什至对响应进行硬编码。我使用 firebug 并复制带有参数的位置，当我将其粘贴到浏览器中时它会显示响应。

代码：

<script type="text/javascript">
$(document).ready(function(){
    $("#mySubmitButton").click(function(){
        var zipCodeFilter = $('input[name=zipCodeFilter]').val();
        var zipRadius = $('select[name=zipRadius]').val();
        var querystring = "zipCodeFilter="+zipCodeFilter+"&zipRadius="+zipRadius;
        $.ajax(
            {
                type: "POST",
                dataType: "json",
                url: "http://dev.lead-hub.com/datasource/dataAccess.cfc?method=getZipCodes&returnformat=json",
                data: querystring,
                success: function(response){
                    var resp = jQuery.trim(response);//getting alot of whitespace in my return CFC method
                    alert(resp);
                    return false;
                    if (resp == 'true'){
                        $('#loginResponse').html("<span style='color: green;font-weight: bold; font-size: 15px;'>Success!!</span>");
                        // you'll want to put your code here to move onto the next page. I would simply do a page refresh
                        // and continue with using the session's login data
                    }else{
                        $('#loginResponse').html("<span style='color: red;font-weight: bold; font-size: 15px;'>Failed!!</span>");
                    }
                    return false;
                    }
                }
            );
        });
    }
);

CFC 代码：

<cffunction name="getZipCodes" access="remote" returnType="string">
    <cfargument name="zipCodeFilter" required="true" type="numeric">
    <cfargument name="zipRadius" required="true" type="numeric">
    <cfset var local = {} />
    <cfset local.getZipCodes = "" />        
        <cfquery name="local.getZipCodes"  dataSource="#application.dns_live#">
            SELECT h.*
            FROM tbl_zipcodes g
            JOIN tbl_zipcodes h ON g.zipcode <> h.zipcode
            AND g.zipcode = '#arguments.zipCodeFilter#'
            AND h.zipcode <> '#arguments.zipCodeFilter#'
            WHERE g.GeogCol1.STDistance(h.GeogCol1)<=(#arguments.zipRadius# * 1609.344)
        </cfquery>
        <cfset local.returnString = "Good" />
    <cfreturn local.returnString />
</cffunction>

Answer 1

由于您在 Firebug 中得到空白响应，但是当您直接在浏览器中访问 URL 时您会看到预期的值，因此我认为这可能是缓存问题。尝试将“cache: false”添加到您的ajax设置中：

$.ajax({
    cache: false,
    type: "POST",
    dataType: "json",
    url: "http://dev.lead-hub.com/datasource/dataAccess.cfc?method=getZipCodes&returnformat=json",
    data: querystring,
    success: function(response){
        var resp = jQuery.trim(response);//getting alot of whitespace in my return CFC method
        alert(resp);
        return false;
        if (resp == 'true'){
            $('#loginResponse').html("<span style='color: green;font-weight: bold; font-size: 15px;'>Success!!</span>");
            // you'll want to put your code here to move onto the next page. I would simply do a page refresh
            // and continue with using the session's login data
        }else{
            $('#loginResponse').html("<span style='color: red;font-weight: bold; font-size: 15px;'>Failed!!</span>");
        }
        return false;
    }
});

编辑

因为不是这样 - 我又想到了另一个想法。当您将参数粘贴到 URL 中并直接请求时，您说它对您有用。这意味着您正在使用 GET 请求来请求您的方法，并在 URL 范围内传递参数。这与您的 ajax 请求不同，因为它的类型是：“POST”。尝试将您的 ajax 更改为输入：“GET”，看看您是否开始得到一些回报。