如何通过定位特定标签来获取其他标签 [英] how to fetch the other tags by targeting a particular tag

问题描述

这里我粘贴了一个 XML 示例，它是标签名称，如 21A,50F,21D,22B.

Here I have pasted a sample of XML that was tag names like 21A,50F,21D,22B.

通常，如果我需要获取特定标签，我可以在 XSLT 中轻松使用以下逻辑:

Normally if I need to fetch a particular tag, I can use logic below easily in XSLT:

<xsl:choose>
    <xsl:when test="tag[name = '21A'] ">
        <xsl:choose>
            <xsl:when test="substring(tag[name = '21A']/value,1,1) = '/'">
                <xsl:variable name="result" select="concat(translate(tag[name = '21A']/value,',',' '),'&#13;')"/>
                <xsl:value-of select="substring(substring-before(substring-after($result,'&#13;'),'&#13;'),1,11)"/>
            </xsl:when>
            <xsl:when test="substring(tag[name = '21A']/value,1,1) != '/'">
                <xsl:value-of select="substring(tag[name = '21A']/value,1,11)"/>
            </xsl:when>
        </xsl:choose>
    </xsl:when>
</xsl:choose>

但是这里我有一个要求为 Sequence A 和 Sequence B.

but here I have a requirement as Sequence A and Sequence B.

• 填充在 50F 上方的标签位于 sequence A
• 填充在 50F 以下的标签属于 sequence B

• the tags which populated above 50F come under sequence A
• the tags which populated below 50F come under sequence B

因为我们需要基于使用 50F 标签来获取标签.谁能给个建议?

since we need to fetch the tags based on using 50F tag. Can any one please give a suggestion?

<local>
    <message>
        <block4>
            <tag>
                <name>21A</name>
                <value>ALW1031</value>
            </tag>
            <tag>
                <name>50F</name>
                <value>TESTING CITI BANK EFT9</value>
            </tag>
            <tag>
                <name>21D</name>
                <value>OUR</value>
            </tag>
            <tag>
                <name>22B</name>
                <value>ipubby</value>
            </tag>
        </block4>
    </message>
</local>

需要输出:

ALW1031,OUR

以前如果假设他们已经填充 21A 两次意味着我在调用标签值时使用了 [1] 和 [2] 位置.现在他们将重复填充 21 个标签，但标签可能是 A 或 D 所以我需要盲目地定位 50f 标签.无论他们提供什么标签，在 50F 之前的 A 或 D 我都需要类似地获取他们在 50F 之后填充的标签> 我们能够获取如此避免位置.

Previously if suppose they have populate 21A two times means I have used the position as [1] and [2] as while calling tag values. Now they will populate 21 tag repeatedly but tags may be A or D so I need to target 50f tag blindly. Whatever tag they will provide, either A or D before 50F I need to fetch similarly whatever they populate tags after 50F we able to fetch so avoiding positions.

总结:@Treemonkey:希望您对我的示例 XML 一目了然.它有一些标签，如 21A,50F 等等.假设如果我有两个字段 field1,field2 之前它们填充了与 21A 相同的重复标签，当时我已经提取为 21A 有旁边标记字段 1 的位置 [1] (tag[name = '21A'][1])

Summary: @Treemonkey: hope you had a glance of my sample XML. It has some tag like 21A,50F and so on. Assume if I have two fields field1,field2 earlier they have populated tags as same repeated tags as 21A at that time I have fetched as 21A having beside by marking position [1] for field 1 (tag[name = '21A'][1])

类似地，21A 除了标记字段 2 的位置 [2]，现在它们将填充 21 但标签与 A 或D.正如我所说的 field1 应该集中 sequence A 和 field2 应该集中在 sequence B 所以现在我们不应该打扰关于获取的位置，我们有一个像标记 50F 一样的分界线，在 50F 之前和 50F 之后将填充的任何字段都必须被视为 sequence A 必须被视为 sequence B.

Similarly 21A having beside by marking position [2] for field 2, now they will populate 21 but tags were different as A or D. As I have said field1 should concentrate sequence A and field2 should concentrate as sequence B so now we should not bother about positions for fetch we have a demarcation like tag 50F whatever fields will populate before 50F has to treated as sequence A and after 50F has to be treated as sequence B.

所以最后我们需要通过针对 50F 来编写 XSLT.如果我想在 50F 之前的(示例 XML)中显示 21A 字段，那么我们需要在 XSLT 中编写一个逻辑作为 21A 之前的选择标签 21Acode>50F 标记用于在字段 1 和字段 2 中生成数据，我们需要在 50F 之后获取为 21D 所以我们需要编写一个逻辑作为选择21D 在 50F 之后.

So finally we need to write as XSLT by targeting 50F. If I want to display 21A field in (sample XML) which before 50F so we need write a logic in XSLT as select tag 21A before 50F tag for to produce data in field 1 and for field 2 we need to fetch as 21D after 50F so we need to write a logic as select 21D after 50F.

推荐答案

您的要求不是很清楚，但以下表达应该会有所帮助.

Your requirements aren't exactly clear, but the following expressions should help.

选择 tag 之前的所有兄弟元素，其子元素 name 具有特定值:

Select all siblings before the tag whose child name has a particular value:

/*/*/*/tag[name='50F']/preceding-sibling::*

选择以下兄弟姐妹:

/*/*/*/tag[name='50F']/following-sibling::*

只选择前一个元素:

/*/*/*/tag[name='50F']/preceding-sibling::*[1]

选择具有特定值的孩子 name 的前面兄弟姐妹:

Select preceding siblings having a child name with a particular value:

/*/*/*/tag[name='50F']/preceding-sibling::*[name='21A']

选择具有特定值的子name的以下兄弟姐妹:

Select following siblings having a child name with a particular value:

/*/*/*/tag[name='50F']/following-sibling::*[name='21D']

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