我正在对CFC进行AJAX调用,以便从我的数据库中返回一条记录。记录始终以字符串形式返回。然后我用该值更新输入字段。
问题是我的字段填充了以下内容:
<wddxPacket version='1.0'><header/><data><string>0</string></data</wddxPacket>
相反,我只想要字符串的值。在此示例中:0
AJAX致电:
<script>
function populateSalesTax(){
// Populate the start and stop odometer text boxes
// when the selectlist ajax completes successfully
$.ajax({
url:'cfcs/taxdata.cfc?method=getSalesTax',
data: { company_name: $("##company_name>option:selected").attr("Value") },
success: function(response) {
console.log('Sales Tax Fubction Ran Successfully');
$("##taxRate").val( response );
},
error: function(response) {
console.log('Error' + response)}
});
}
</script>
CFC功能:
<cffunction name="getSalesTax" access="remote" returnType="string">
<cfargument name="company_name" type="any" required="true">
<!--- localize function variables --->
<cfset var taxDetail = "">
<cfoutput>
<cfquery name="taxDetail" datasource="#datasource#">
SELECT tax_rate
FROM customer_table
<!--- adjust cfsqltype if needed --->
WHERE company_name = <cfqueryparam value="#ARGUMENTS.company_name#"
cfsqltype="cf_sql_varchar">
</cfquery>
</cfoutput>
<cfreturn taxDetail.tax_rate>
</cffunction>
输入字段:
<cfinput name="taxRate" id="taxRate" type="text" size="2" readonly="yes">
答案 0 :(得分:1)
我这里有很多代码,因为我做的事情与大多数情况有很大不同,但这是一个进化。 以下是我创建典型表的方法:
if exists (select * from sysobjects where id = object_id(N'myTable') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
DROP TABLE myTable
GO
CREATE TABLE myTable(
myTableID Int Identity(1000,1) PRIMARY KEY NONCLUSTERED
,myTableName varchar(128) default ''
,myTableDesc varchar(max) default ''
,myTableSort Int default 0
)
GO
INSERT INTO myTable(myTableName,myTableSort) VALUES('One',1)
INSERT INTO myTable(myTableName,myTableSort) VALUES('Two',2)
INSERT INTO myTable(myTableName,myTableSort) VALUES('Three',3)
我使用存储过程。这是SQL代码:
create schema myTable authorization dbo
-- It might seem odd to create a schema called with the name of the table, but that's how I organize the stored procedures by table name.
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'myTable.[get]') AND type in (N'P', N'PC'))
DROP PROC myTable.[get]
GO
CREATE PROC myTable.[get]
(@UsrID Int
,@RemoteAddr Varchar(15)
,@myTableID Int
) AS
SELECT myTableID,myTableName,myTableDesc,myTableSort
FROM myTable
WHERE myTableID = @myTableID
GO
exec myTable.[get] 0,'',1001
@UsrID是每个存储过程中的第一个参数。这是谁想知道的。
@RemoteAddr是每个存储过程中的第二个参数。这是用户的IP地址。 现在,我知道这不是万无一失的,但这里的想法是安全就是这样 1)@UsrID是他们所知道的(他们必须知道以用户身份登录的密码)。
2)@RemoteAddr是他们拥有的东西(虽然IP地址可以被欺骗)。
@myTableID是@myTable的主键。我总是将主键命名为表名,后跟ID。
这是一个典型的.cfm页面:
<cfscript>
</cfscript>
<cfoutput>
<cfinclude template="/Inc/html.cfm">
<link rel="stylesheet" type="text/css" href="Index.css">
<cfinclude template="/Inc/body.cfm">
<ul>
<li><a class="myClass" data-mytableid="1000" href="JavaScript:;">Click One!</a></li>
<li><a class="myClass" data-mytableid="1001" href="JavaScript:;">Click Two!</a></li>
<li><a class="myClass" data-mytableid="1002" href="JavaScript:;">Click Three!</a></li>
</ul>
<cfinclude template="/Inc/foot.cfm">
<script src="Index.js"></script>
<cfinclude template="/Inc/End.cfm">
</cfoutput>
我在所有网页中都包含的脚本:
window.dom = {}
dom.msg = $('#msg')
dom.main = $('main')
dom.fail = function(xhr, status, response) {
dom.msg.text(status + ': ' + response).addClass('label-warning')
dom.main.html(xhr.responseText)
debugger
}
页面本身的脚本:
(function() {
$(document).on('click','.myClass',clicked)
function clicked() {
var local = {}
local.url = 'myTable.cfc'
local.type = 'POST' // or GET
local.dataType = 'json'
local.data = {}
local.data.method = 'get';
local.data.myTableID = $(this).data('mytableid')
local.context = this;
result = $.ajax(local)
result.fail(dom.fail)
result.done(done)
}
function done(response, status, xhr) {
// console.log(response.COLUMNS)
// console.log(response.DATA)
// console.log(response.DATA[0])
// console.log(response.DATA[0][0]) // myTableID
// console.log(response.DATA[0][1]) // myTableName
// console.log(response.DATA[0][2]) // myTableDesc
// console.log(response.DATA[0][3]) // myTableSort
// console.log(status)
// console.log(xhr)
}
})()
最后,myTable.cfc:
component {
remote function get(myTableID) returnformat='json' {
storedproc dataSource=session.dataSource
procedure='myTable.[get]' {
procparam cfSqlType='cf_sql_integer' value=session.Usr.UsrID;
procparam cfSqlType='cf_sql_varchar' value=session.RemoteAddr;
procparam cfSqlType='cf_sql_integer' value=arguments.myTableID;
procresult resultset=1 name='result';
}
return result
}
}
我应该粘贴一个缩写的Application.cfc:
component {
this.Name = 'myAJAX'
this.dataSource = 'LR2015Summer1'
this.SessionManagement = true
function onSessionStart() {
session.dataSource = this.dataSource
session.RemoteAddr = getPageContext().getRequest().getRemoteAddr()
session.Usr = {}
session.Usr.UsrID = 0
}
function onRequestStart(LogCFCName) {
setting showDebugOutput=false;
if (isDefined('url.onSessionStart')) {
onSessionStart()
}
request.msg = ''
request.mod = 'label-info'
request.title='How I AJAX and return a query'
request.home = '/HowIWrite/AJAX/cfc'
request.css = url.css ?: true
request.js = url.js ?: true
request.bootstrap = url.bootstrap ?: true
request.bootstrap_theme = 'bootstrap-theme'
request.tryCatch = url.tryCatch ?: false
request.navbar = url.navbar ?: true
request.container = url.container ?: true
request.GoogleMaterialdesign = url.GoogleMaterialdesign ?: true
request.jQueryUI = url.jQueryUI ?: false
request.jQueryUI_theme = 'ui-lightness' // black-tie,blitzer,cupertino,dark-hive,dot-luv,eggplant,excite-bike,flick,hot-sneaks,humanity,le-frog,mint-choc,overcast,pepper-grinder,redmond,smoothness,south-street,start,sunny,swanky-purse,trontastic,ui-darkness,ui-lightness,vader
request.cgiName = getPageContext().getRequest().getServletPath()
request.cgiName = Left(request.cgiName,Len(request.cgiName)-4)
request.cgiName = ListLast(request.cgiName,'/')
request.cssName = request.cgiName & '.css'
request.jsName = request.cgiName & '.js'
}
}
答案 1 :(得分:1)
您可以修改您的CFC:
<cfset response = { taxRate = taxDetail.tax_rate } />
<cfreturn serializeJSON(response)>
(ajax成功方法应该有response.TAXRATE
)
或您的ajax调用网址:
cfcs/taxdata.cfc?method=getSalesTax&ReturnFormat=json
<强> 但是 强>
从你在ajax请求url:'cfcs/taxdata.cfc?method=getSalesTax'
中的相对路径判断我可以安全地假设你正在尝试在同一个来源(同一站点)上执行ajax请求而你实际上并不需要 / em> remote
方法,但public
或package
方法。
您应该了解声明方法remote
时出现的安全问题。如果没有正确的安全层或role
已定义,您已打开任何人使用的方法,包括恶意用户。
所以你应该拥有的是:
getSalesTax
的cfm,但理想情况下是一个框架public
或package
而非remote
<cfcontent type="application/json" reset="true" />
)