我正在使用以下 XML 提要并使用 structKeyExists 和 CFLoop 来显示它包含的数据。
<cfoutput>
<cfxml variable="eating">
<catalog>
<results>10 </results>
<food id="bk101">
<initials type="thefirst" name="BK"/>
<initials type="thesecond" name="KB"/>
<keywords>Burger King, pie, hamburgers, fries, milkshakes </keywords>
</food>
<food id="bk102">
<initials type="thefirst" name="TB"/>
<initials type="thesecond" name="BT"/>
<keywords>Taco Bell, tacos, churros, burrito, gorditas </keywords>
</food>
<food id="bk103">
<keywords>Pizza Hut, pizza, cheese, garlic bread </keywords>
</food>
<food id="bk104">
<initials type="thefirst" name="CFA"/>
<initials type="thesecond" name="AFC"/>
<keywords>Chick-Fil-A, chicken, chicken wrap, sauce, Bananas Pudding Milkshake </keywords>
</food>
<food id="bk105">
<initials type="thefirst" name="PE"/>
<initials type="thesecond" name="EP"/>
<keywords>Panda Express, rice, egg rolls, general tso </keywords>
</food>
<food id="bk106">
<initials type="thefirst" name="SJ"/>
<initials type="thesecond" name="JS"/>
<keywords>Sakura Japan, rice, spring rolls, bento </keywords>
</food>
<food id="bk107">
<initials type="thefirst" name="FG"/>
<keywords>Five Guys, fries, burgers, hot dogs </keywords>
</food>
<food id="bk108">
<initials type="thefirst" name="TN"/>
<initials type="thesecond" name="NT"/>
<keywords>Tandoori Nights, biryani, chicken, egg rolls </keywords>
</food>
<food id="bk109">
<initials type="thefirst" name="HoK"/>
<keywords>House of Kabob, rice, bread, beef kabaob, chicken kabob </keywords>
</food>
<food id="bk110">
<initials type="thefirst" name="BF"/>
<initials type="thesecond" name="FB"/>
<keywords>Baja Fresh, quesadilla, soft taco, chili con queso </keywords>
</food>
</catalog>
</cfxml>
</cfoutput>
<cfset data = queryNew("id,initials,initials2,keywords","integer,varchar,varchar,varchar")>
<cfloop index="x" from="1" to="#eating.catalog.results.xmlText#">
<cfif structKeyExists(eating.catalog.food[x],"initials")>
<cfset queryAddRow(data)>
<cfset querySetCell(data,"id",x)>
<cfset querySetCell(data,"initials", eating.catalog.food[x].initials[1].xmlattributes.name )>
<cfset querySetCell(data,"initials2", eating.catalog.food[x].initials[2].xmlattributes.name )>
<cfset querySetCell(data,"keywords", eating.catalog.food[x].keywords )>
</cfif>
</cfloop>
<cfoutput query="data">
#id# - #initials# :: #initials2# :: #keywords# <br /><br />
</cfoutput>
您会注意到 XML 提要中元素 3 缺少一个初始标记,元素 7 和 9 缺少两个初始标记。如果将缩写标签添加到 Elements 3、7、9 的 XML 中,则代码运行良好。但是,由于它们丢失,这会导致错误被抛出一个错误。
我想做的是从我的结果中省略元素 3(以及所有其他导致错误的条目)并防止显示任何错误,因此应用程序结果显示如下:
1 - BK :: KB :: 汉堡王、馅饼、汉堡、薯条、奶昔
2 - TB :: BT :: 塔可钟、玉米饼、油条、墨西哥卷饼、gorditas
4 - CFA :: AFC :: Chick-Fil-A、鸡肉、鸡肉卷、酱汁、香蕉布丁奶昔
5 - PE :: EP :: 熊猫快递,米饭,蛋卷,左宗棠
6 - SJ :: JS :: 日本樱花,米饭,春卷,便当
8 - TN :: NT :: Tandoori Nights, biryani, 鸡肉, 蛋卷
10 - BF :: FB :: Baja Fresh、油炸玉米饼、软炸玉米饼、辣椒酱
请注意,我的示例已简化,实际上我正在使用包含数百个元素的 XML 提要。考虑到这一点,我做错了什么,我怎样才能让上面的内容正确显示?