Amazon，java，V2 in coldfusion cfc -方法未找到

Question

我正在尝试实现Amazon，即coldfusion中的V2 ( am 2016/windows)，它利用了亚马逊文档和.jar文件提供的JAVA代码。(https://github.com/amzn/amazon-pay-api-sdk-java#readme)

我写了一个cfc，打算在会议中使用。我实例化WebstoreClient对象，设置Pay配置并生成按钮代码。单击页面上的按钮，打开一个窗口，登录沙箱，关闭窗口并转到URL中带有会话it的第二个签出页(保持简单)，当单击按钮时，amazon创建签出会话，所有本地方法都是到amazon服务器的GET/POST/补丁操作--够简单了。不懂java，但通常能够遵循代码，看起来一切都在那里。

这里是我遇到麻烦的地方。我不能getCheckoutSession(会话is )我得到的错误是

未找到getCheckoutSession方法。要么没有具有指定方法名称和参数类型的方法，要么getCheckoutSession方法重载了ColdFusion无法可靠解密的参数类型。ColdFusion找到了与提供的参数匹配的0种方法。如果这是一个Java对象，并且您验证了该方法的存在，那么使用javacast函数来减少歧义。

我的第一个结账页面是这样的，很好。

<cfset session.amazonPayClient=createObject('component', 'cfc.amazon').init(dsn='xyz',env='dev')>
<cfoutput>#session.amazonPayClient.renderButton()#</cfoutput>

第二个页面有以下内容，这就是我获得错误-方法未找到的地方。

<cfset session.amazonPayClient.getCheckoutSess(url.amazonCheckoutSessionId)>

这就是我创建对象的方式--它发生在cfc的init()中。

<cffunction name="setClient" access="private" returntype="void" hint="this creates the client used to initialize the checkout" output="no">
        <cfset region=createObject("java", "com.amazon.pay.api.types.Region")>
        
        <cffile action="read" file="#variables.PEM_PATH#" variable="pem">
        <cfset variables.oPayConfiguration = createObject("java", "com.amazon.pay.api.PayConfiguration")
            .setPublicKeyId("#variables.amazonProperties.publicKeyID#")
            .setPrivateKey("#pem#")
            .setRegion(Region.NA)
            .setEnvironment(variables.Environment.SANDBOX)
        >
        
        <cfset variables.oClient=createObject("java", "com.amazon.pay.api.WebstoreClient").init(variables.oPayConfiguration)>
</cffunction>

这2与按钮签名一起工作--我认为它在其他地方使用(最终)

<cffunction name="genButtonSignature" access="private" returntype="string" hint="this generates the button signature used to create the checkoutsession" output="no">
    <cfset signature = variables.oClient.generateButtonSignature(variables.amazonProperties.buttonPayload)>
    <cfreturn trim(signature)>
</cffunction>

<cffunction name="getButtonSignature" access="private" returntype="string" output="no">
    <cfreturn trim(variables.amazonProperties.buttonSignature)>
</cffunction>

这个按钮显示得很好。

<cffunction name="renderButton" access="public" returntype="string" output="no">
    <cfset var buttonCode="">
    <cfsavecontent variable="buttonCode">
        <div id="AmazonPayButton"></div>
        <script src="<cfoutput>#variables.amazonProperties.payScript#</cfoutput>"></script>
        <script type="text/javascript" charset="utf-8">
              amazon.Pay.renderButton('#AmazonPayButton', {
                   // set checkout environment
                   merchantId: '<cfoutput>#variables.amazonProperties.merchantID#</cfoutput>',
                   publicKeyId: '<cfoutput>#variables.amazonProperties.publicKeyID#</cfoutput>',
                      ledgerCurrency: 'USD',         
                      // customize the buyer experience
                      checkoutLanguage: 'en_US',
                      productType: 'PayAndShip',
                      placement: 'Cart',
                      buttonColor: 'Gold',
                      createCheckoutSessionConfig: {                     
                          <cfoutput>payloadJSON:'#variables.amazonProperties.buttonPayload#',
                          signature:'#getButtonSignature()#'</cfoutput>
                      }   
                  });
             </script>
        </cfsavecontent>
        <cfreturn buttonCode>
    </cffunction>

而这正是它失败的地方。当使用亚马逊ScratchPad时，它所需要的只是checkoutSessionId，所以我在这一点上完全迷失了方向。

<cffunction name="getCheckoutSess" access="public" returntype="any">
    <cfargument name="sessionID" type="string" required="true">
    <cfreturn variables.oClient.getCheckoutSession(checkoutSessionId=arguments.sessionID)>
</cffunction>

该方法在WebStoreClient中存在

/**
     * The GetCheckoutSession operation is used to get checkout session details that contain
     * all session associated details.
     *
     * @param checkoutSessionId Checkout Session ID provided by Checkout v2 service
     * @param header Map<String, String> containining key-value pair of required headers (e.g., keys such as x-amz-pay-idempotency-key, x-amz-pay-authtoken)
     * @return The response from the GetCheckoutSession service API, as
     * returned by Amazon Pay.
     * @throws AmazonPayClientException When an error response is returned by Amazon Pay due to bad request or other issue
     */
    public AmazonPayResponse getCheckoutSession(final String checkoutSessionId, final Map<String, String> header) throws AmazonPayClientException {
        final URI checkoutSessionURI = Util.getServiceURI(payConfiguration, ServiceConstants.CHECKOUT_SESSIONS);
        final URI getCheckoutSessionURI = checkoutSessionURI.resolve(checkoutSessionURI.getPath() + "/" + checkoutSessionId);
        return callAPI(getCheckoutSessionURI, "GET", null, "", header);
    }

    /**
     * The GetCheckoutSession operation is used to get checkout session details that contain
     * all session associated details.
     *
     * @param checkoutSessionId Checkout Session ID provided by Checkout v2 service
     * @return The response from the GetCheckoutSession service API, as
     * returned by Amazon Pay.
     * @throws AmazonPayClientException When an error response is returned by Amazon Pay due to bad request or other issue
     */
    public AmazonPayResponse getCheckoutSession(final String checkoutSessionId) throws AmazonPayClientException {
        return getCheckoutSession(checkoutSessionId, null);
    }

我真的希望在读完这些之后，有人能说，哦，这很简单，你不懂一些基本的东西。

Answer 1

您使用的是什么版本的ColdFusion？你在使用javacast吗？如果函数/方法需要INT或其他特定的数据类型，则需要确保显式转换或java将抛出相同的错误，因为数据类型不匹配。(注意:有些数据类型可能是非标准的CFML类型。我已经开始转换查询返回的值，因为有时CFML-字符串不是java-字符串。