如何在 fop xsl-fo 中使用"空格"属性？

Question

我正在使用FOP 2.2来从xml文档生成pdf文件。FOP 文档在这里 http://xmlgraphics.apache.org/fop/

pdf文档生成正常。但是，我不断收到此错误消息。

    ERROR: Invalid property value encountered in white-space="pre-wrap": org.apache.fop.fo.expr.PropertyException: null:118:-1: No conversion defined pre-wrap; property:'white-space' (See position 119:-1)
org.apache.fop.fo.expr.PropertyException: null:118:-1: No conversion defined pre-wrap; property:'white-space'
    at org.apache.fop.fo.properties.PropertyMaker.make(PropertyMaker.java:446)
    at org.apache.fop.fo.PropertyList.convertAttributeToProperty(PropertyList.java:499)
    at org.apache.fop.fo.PropertyList.addAttributesToList(PropertyList.java:386)
    at org.apache.fop.fo.FObj.processNode(FObj.java:124)
    at org.apache.fop.fo.flow.table.TableFObj.processNode(TableFObj.java:232)
    at org.apache.fop.fo.flow.table.TableRow.processNode(TableRow.java:82)
    at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:291)
    at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:179)
    at net.sf.saxon.event.ContentHandlerProxy.startContent(ContentHandlerProxy.java:252)
    at net.sf.saxon.event.ProxyReceiver.startContent(ProxyReceiver.java:169)
    at net.sf.saxon.event.NamespaceReducer.startContent(NamespaceReducer.java:187)
    at net.sf.saxon.event.ReceivingContentHandler.startElement(ReceivingContentHandler.java:195)
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at net.sf.saxon.event.Sender.sendSAXSource(Sender.java:262)
    at net.sf.saxon.event.Sender.send(Sender.java:128)
    at net.sf.saxon.IdentityTransformer.transform(IdentityTransformer.java:28)

XSL 模板具有以下代码：

<xsl:attribute name="style">
    <xsl:text>white-space: pre-wrap;</xsl:text>
</xsl:attribute>

Answer 1

(我猜你正在使用XSLT将HTML转换为XSL-FO，因为style不是有效的FO属性(

错误消息告诉您pre-wrap不是属性 white-space 的有效值;唯一允许的值是 normal 、 pre 和 nowrap 。

但是，在 XSL-FO 中，white-space只是一个"速记属性"，用于快速控制一组与空格相关的属性，因此您应该能够直接设置这些属性来实现所需的结果：

linefeed-treatment="preserve" 
white-space-collapse="false" 
white-space-treatment="preserve"