错误:由以下原因引起:java.lang.IllegalArgumentException:关系null并非从此部分开始/ppt/slides/slide3.xml [英] ERROR : Caused by: java.lang.IllegalArgumentException: Relationship null doesn't start with this part /ppt/slides/slide3.xml

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问题描述

我正在与apache poi xslf一起导出ppt文件. 首先,我有一个包含3张幻灯片的模板集:标题幻灯片,摘要幻灯片和第三张幻灯片

I'm working with apache poi xslf to export ppt file. First, I have a template set with 3 slides : title slide, summary slide, and third slide

我复制了第三张幻灯片(以它为模板),以便复制数据库中的许多数据/图形.

I duplicate the 3rd slide (i have it as a template) in order to copy many data/graphics as I have in database.

因此,要这样做:

XMLSlideShow slideShow = new XMLSlideShow(dlfile.getContentStream());
XSLFSlide[] slides = slideShow.getSlides();
XSLFSlide createdSlide = slideShow.createSlide(slides[2].getSlideLayout());
//get content from slide to createdslide
createdSlide.importContent(slides[2]); 
//... add data to created slide

我在第createdSlide.importContent(slides[2]);

Caused by: java.lang.IllegalArgumentException: Relationship null doesn't start with this part /ppt/slides/slide3.xml
    at org.apache.poi.openxml4j.opc.PackagePart.getRelatedPart(PackagePart.java:468)
    at org.apache.poi.xslf.usermodel.XSLFSheet.importBlip(XSLFSheet.java:521)
    at org.apache.poi.xslf.usermodel.XSLFSlide.importContent(XSLFSlide.java:235)

P.S:此代码与另一个临时模板一起使用也很好. 我需要根据用户选择使用不同的模板. (模板在我使用liferay时存储在db中).

P.S : this code works just fine with another tempalte. I need to use different templates based on user selection. (templates are stored in db as i'm using liferay).

我搜索了几个小时,但徒劳! 我什至不明白错误的含义.

I've searched for hours, but in vain! I don't even understand what the error means.

任何链接/帮助将不胜感激.

Any links/help would appreciated.

推荐答案

错误来自

The error comes from org.apache.poi.openxml4j.opc.PackagePart.getRelatedPart code line 468:

throw new IllegalArgumentException("Relationship " + rel + " doesn't start with this part " + _partName);.

错误指出rel为空.因此

The error states that rel is null. So org.apache.poi.xslf.usermodel.XSLFSheet.importBlip in code line 521:

blipPart = packagePart.getRelatedPart(blipRel);

已将blipRel移交为空.因此

had handed over blipRelas null. So org.apache.poi.xslf.usermodel.XSLFSlide.importContent in code line 235:

String relId = importBlip(blipId, src.getPackagePart());

已将blipId移交为空.

如果幻灯片3中模板中的图片之一不是嵌入式图片而是链接的图片,则这很清楚.代码:

This is pretty clear if one of the pictures in your template in Slide 3 is not an embedded picture but a linked picture. The code:

@Override
public XSLFSlide importContent(XSLFSheet src){
    super.importContent(src);

    XSLFBackground bgShape = getBackground();
    if(bgShape != null) {
        CTBackground bg = (CTBackground)bgShape.getXmlObject();
        if(bg.isSetBgPr() && bg.getBgPr().isSetBlipFill()){
            CTBlip blip = bg.getBgPr().getBlipFill().getBlip();
            String blipId = blip.getEmbed();

            String relId = importBlip(blipId, src.getPackagePart());
            blip.setEmbed(relId);
        }
    }
    return this;
}

仅考虑嵌入的blip数据.

consideres only embedded blip data.

从您的代码行中,我可以看到您正在使用apache poi版本3.9.但是据我目前的版本来看,这一直没有改变.仅考虑嵌入的Bilp数据.

From your code lines I can see that you are using apache poi version 3.9. But as far as I see in current versions this had not changed until now. Only embedded bilp data will be considered.

因此,请查看您的模板,并确保所有图片均已嵌入且未链接.

So have a look at your template and make sure that all pictures are embedded and not linked.

这篇关于错误:由以下原因引起:java.lang.IllegalArgumentException:关系null并非从此部分开始/ppt/slides/slide3.xml的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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