嗨,大家好,我一直有一点麻烦他想要做一个xml的完整副本和替换数据中的字段这是我一直在使用的代码,但它只转换第一个字段和没有使用eclipse复制xml im和默认的xsl转换来完成工作,因为它似乎是唯一可以正常工作的处理器,无论如何这里是xsl模板:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:variable name="replacedURL">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="/hotels/hotel/hotel_link/text()"/>
<xsl:with-param name="replace" select="'[[PARTNERID]]'"/>
<xsl:with-param name="by" select="'13252'"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="$replacedURL"/>
</xsl:template>
<xsl:template name="string-replace-all">
<xsl:param name="text"/>
<xsl:param name="replace"/>
<xsl:param name="by"/>
<xsl:choose>
<xsl:when test="contains($text, $replace)">
<xsl:value-of select="substring-before($text,$replace)"/>
<xsl:value-of select="$by"/>
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="substring-after($text,$replace)"/>
<xsl:with-param name="replace" select="$replace"/>
<xsl:with-param name="by" select="$by"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$text"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
然后这是xml的样本
<hotel>
<hotel_ref>235128</hotel_ref>
<hotel_name>Afghanistan Dolores test - non bookable</hotel_name>
<hotel_star>2</hotel_star>
<hotel_address>afghanistan test</hotel_address>
<hotel_city>afghanistan</hotel_city>
<hotel_pcode /><hotel_county />
<hotel_country>Afghanistan</hotel_country>
<hotel_description>hotel description text</hotel_description>
<alternate_description>hotel description text</alternate_description>
<hotel_directions>kjlaklka</hotel_directions>
<alternate_directions>kjlaklka</alternate_directions>
<hotel_link> http://www.website.com/en/p[[PARTNERID]]/hotel-reservations/235128_afghanistan-dolores-test-non-bookable-afghanistan.aspx</hotel_link>
<customerrating>0</customerrating>
<PricesFrom>10.0000</PricesFrom>
<MaxPrice>800.00</MaxPrice>
<CurrencyCode>GBP</CurrencyCode>
<images />
<geo_code><lat>34.53824</lat><long>69.18640</long></geo_code>
<hotel_facilities />
<checkin_time>12/07/2011 14:00:00</checkin_time>
<checkout_time>12/07/2011 11:00:00</checkout_time>
<cancellationpolicy>2 days prior to stay</cancellationpolicy>
<cancellationtext /><accommodation_type /><hotel_appeals />
<hotel_star_accreditor />
<hotel_total_rooms>45</hotel_total_rooms>
<hotel_credit_cards>
<CreditCard><credit_card_id>4</credit_card_id><credit_card_name>American Express</credit_card_name></CreditCard><CreditCard><credit_card_id>5</credit_card_id><credit_card_name>Switch/Maestro</credit_card_name></CreditCard><CreditCard><credit_card_id>1</credit_card_id><credit_card_name>Visa/Delta</credit_card_name></CreditCard><CreditCard><credit_card_id>2</credit_card_id> <credit_card_name>Mastercard</credit_card_name></CreditCard></hotel_credit_cards>
<hotel_city_taxes><CityTax><Type /><Value /><OptedIn /><IsCityTaxArea /></CityTax>
</hotel_city_taxes>
</hotel>
整个文件大约是500兆字节,我需要一个特殊的处理器才能做到这一点,或者内置xsl转换的日食会做什么工作
答案 0 :(得分:1)
复制所有内容,同时只修改一个小块,这始终是身份模板的一种情况:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<!-- identity template: copy everything 1:1 -->
<xsl:template match="@* | node()">
<xsl:copy>
<xsl:apply-templates select="@* | node()" />
</xsl:copy>
</xsl:template>
<!-- ...except for the text in <hotel_link> elements: -->
<xsl:template match="hotel_link/text()">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="."/>
<xsl:with-param name="replace" select="'[[PARTNERID]]'"/>
<xsl:with-param name="by" select="'13252'"/>
</xsl:call-template>
</xsl:template>
<xsl:template name="string-replace-all">
<xsl:param name="text"/>
<xsl:param name="replace"/>
<xsl:param name="by"/>
<xsl:choose>
<xsl:when test="contains($text, $replace)">
<xsl:value-of select="substring-before($text,$replace)"/>
<xsl:value-of select="$by"/>
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="substring-after($text,$replace)"/>
<xsl:with-param name="replace" select="$replace"/>
<xsl:with-param name="by" select="$by"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$text"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
(string-replace-all
模板已taken from this answer。)
话虽这么说,如果您的输入文件是500 MB,则不应使用XSLT转换,因为这会在内存开始之前在内存中构建完整的DOM输入。 DOM总是比它所基于的XML文档大得多,所以你可能会遇到内存问题。当然,无论如何你都可以试试。
您应该编写一个小型SAX解析器。这将更快,更节省内存。