< fo:external-graphic src = ...>引发错误 [英] <fo:external-graphic src=... > throws error

问题描述

我使用fop 2.1，并且需要加载具有绝对路径的外部图形.我试过了:

I use fop 2.1 and I need to load an external graphic with an absolute path. I tried this:

    <fo:root xsl:use-attribute-sets="text-attributes">
        <fo:layout-master-set>
         ...

        <fo:page-sequence master-reference="master">
            <xsl:call-template name="pageHeader"/>
            <xsl:call-template name="pageFooter"/>

            <fo:flow flow-name="xsl-region-body">
                ...
            </fo:flow>
        </fo:page-sequence>

   ...

<xsl:template name="pageHeader">
    <fo:static-content flow-name="region-before-first">
        <fo:block>
           <fo:external-graphic src="url({concat('file:/',$logo-image)})" height="15mm" content-height="15mm"/>  
        </fo:block>
    </fo:static-content>
</xsl:template>

$ logo-image包含绝对路径，例如C:/users/.../application/logo.gif

$logo-image contains the absolute path like C:/users/.../application/logo.gif

我收到以下错误:

PM org.apache.fop.events.LoggingEventListener processEvent
SEVERE: Invalid property value encountered in src="url(file:/C:/users/.../application/logo.gif)"  .... Invalid URI specified

有什么主意吗?

我还尝试将'像"url('file:/C:/users/.../application/logo.gif')"放在其他地方，否则放在潜水员的地方.没有成功...:-(

I tried also to put ' around like "url('file:/C:/users/.../application/logo.gif')" and else at divers place. No success... :-(

就像在其他样式表中一样，我确实具有外部图形，该图形我尝试过的功能也将标题带入正常流程(=>不是static).不是标题的真正方法，而是尝试...:

As in some other stylesheets I do have external graphic that functions I tried also take the header into the normal flow ( => not static ). Not really the way to do for a header, but a try... :

    <fo:root xsl:use-attribute-sets="text-attributes">
        <fo:layout-master-set>
         ...

        <fo:page-sequence master-reference="master">
            <!--<xsl:call-template name="pageHeader"/>-->
            <xsl:call-template name="pageFooter"/>

            <fo:flow flow-name="xsl-region-body">
                <xsl:call-template name="pageHeader"/>
                ...
            </fo:flow>
        </fo:page-sequence>

   ...

<xsl:template name="pageHeader">
    <fo:block-container position="absolute" top="10mm" left="10mm">
        <fo:block>
           <fo:external-graphic src="url({concat('file:/',$logo-image)})" height="15mm" content-height="15mm"/>  
        </fo:block>
    </fo:block-container>
</xsl:template>

但是:如果我放了，则独立

But: Independantly if I put

<fo:external-graphic src="url({concat('file:/',$logo-image)})" height="15mm" content-height="15mm"/> 

或

<fo:external-graphic src="url({concat('file:///',$logo-image)})" height="15mm" content-height="15mm"/> 

我得到同样的愚蠢错误:

I get same stupid error:

.... Invalid URI specified

推荐答案

首先，通过使其独立于XSLT用作静态FO文件来简化事务.工作了静态目标FO文件后，您就可以再次回到XSLT.

First, simplify matters by getting it to work as a static FO file, independent of XSLT. You can double-back to the XSLT once you have a static target FO file working.

意识到作为 @rene评论，您必须使用完整的URI语法，实际上可能还需要另一个/进行本地访问. (请考虑protocol://host/path，其中协议是'文件'，并且主机在此处为空，连续产生三个斜杠):

Realize that as @rene commented, you have to use full URI syntax, which may actually require yet another / for local access. (Think protocol://host/path where protocol is 'file' and host is empty here, yielding three slashes in a row):

file:///c:/users

如果您对此仍有疑问，请执行 浏览器浏览目录树 ，以确保文件及其祖先目录都存在.

If you still have trouble with this, do a browser walk up the directory tree to make sure that the files and its ancestor directories all exist.

最后，请注意，...无效，以防万一，这是..的错别字，而不是有关省略路径组件的元符号.

Finally, note that ... isn't valid, in case that's a typo for .. and not a meta-notation about elided path components.

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