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首页 > 解决方案 > iTextPDF 7 - 带有 base64 内联图像的 HTML 到 PDF。PNG 可以，但 JPG 失败

html - iTextPDF 7 - 带有 base64 内联图像的 HTML 到 PDF。PNG 可以，但 JPG 失败

问题描述

我的 html 中有 5 个 base64 内联图像。4个PNG和1个JPG。将 html 转换为 PDF 时该过程失败。从html中删除JPG图像节点时，它可以正常工作！

Java 代码iTextPDF7：

HtmlConverter.convertToPdf(new File(src), new File(dest));

JPG base64 HTML 图像：

<img content-height="4.22cm" content-width="7.45cm" src="data:image/jpg;base64,/9j/4AAQSkZJRgABAQEBLAEsAAD/4Q4kRXhpZgAATU..........

PNG base64 HTML 图像：

<img content-width="scale-down-to-fit" width="100%" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAG4AAACrCAY........

我收到此错误消息：

错误的 Base64 输入字符在 76：37（十进制）18：34：13.582 [main] 错误 cihrresource.ResourceResolver - 无法检索具有给定基本 URI（文件：/D：/PDFCONVERTER/ITEXPDF7/html/）和图像源路径的图像（数据：image/jpg；base64,/9j/4AAQSkZJRgABAQEBLAEsAAD/4Q4kRXhpZgAATU0AKgAAAAgAB.......）

java.net.MalformedURLException: unknown protocol: data
    at java.net.URL.<init>(URL.java:600) ~[na:1.8.0_72]
    at java.net.URL.<init>(URL.java:490) ~[na:1.8.0_72]
    at com.itextpdf.html2pdf.resolver.resource.UriResolver.resolveAgainstBaseUri(UriResolver.java:117) ~[html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.resolver.resource.ResourceResolver.retrieveImage(ResourceResolver.java:122) ~[html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.tags.ImgTagWorker.<init>(ImgTagWorker.java:72) [html2pdf-1.0.1.jar:na]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [na:1.8.0_72]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) [na:1.8.0_72]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [na:1.8.0_72]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) [na:1.8.0_72]
    at com.itextpdf.html2pdf.attach.impl.DefaultTagWorkerFactory.getTagWorker(DefaultTagWorkerFactory.java:88) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.visit(DefaultHtmlProcessor.java:224) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.visit(DefaultHtmlProcessor.java:240) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.visit(DefaultHtmlProcessor.java:240) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.visit(DefaultHtmlProcessor.java:240) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.visit(DefaultHtmlProcessor.java:240) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.impl.DefaultHtmlProcessor.processDocument(DefaultHtmlProcessor.java:200) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.attach.Attacher.attach(Attacher.java:78) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToDocument(HtmlConverter.java:298) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToPdf(HtmlConverter.java:244) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToPdf(HtmlConverter.java:231) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToPdf(HtmlConverter.java:193) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToPdf(HtmlConverter.java:167) [html2pdf-1.0.1.jar:na]
    at com.itextpdf.html2pdf.HtmlConverter.convertToPdf(HtmlConverter.java:147) [html2pdf-1.0.1.jar:na]
    at cl.cgr.sistradoc.pdfconverter.itextpdf7.Html2Pdf.createPdf(Html2Pdf.java:78) [classes/:na]
    at cl.cgr.sistradoc.pdfconverter.itextpdf7.Html2Pdf.main(Html2Pdf.java:54) [classes/:na]
18:34:13.587 [main] ERROR c.i.h.a.impl.DefaultHtmlProcessor - Worker of type com.itextpdf.html2pdf.attach.impl.tags.DivTagWorker unable to process com.itextpdf.html2pdf.attach.impl.tags.ImgTagWorker

iTxtPDF 7 不支持 JPG base64 html 内联图像？谢谢你的帮助！！！

迭戈

更新 2019-02-19 我的 POM：

    <properties>
        <itext.version>7.1.5</itext.version>
    </properties>
  <dependencies>
  <!-- iText 7 License Key Library -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itext-licensekey</artifactId>
        <!-- version>2.0.4</version--><!-- for itext 7.0.4 -->
        <version>3.0.4</version><!-- for itext 7.1.5 -->
    </dependency>

    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>kernel</artifactId>
        <version>${itext.version}</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>io</artifactId>
        <version>${itext.version}</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>layout</artifactId>
        <version>${itext.version}</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>forms</artifactId>
        <version>${itext.version}</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>pdfa</artifactId>
        <version>${itext.version}</version>
    </dependency>
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>pdftest</artifactId>
        <version>${itext.version}</version>
    </dependency>

    <!-- only needed for digital signatures -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>sign</artifactId>
        <version>${itext.version}</version>
    </dependency>

    <!-- only needed for barcodes -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>barcodes</artifactId>
        <version>${itext.version}</version>
    </dependency>

    <!-- only needed for Asian fonts -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>font-asian</artifactId>
        <version>${itext.version}</version>
    </dependency>

    <!-- only needed for hyphenation -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>hyph</artifactId>
        <version>${itext.version}</version>
    </dependency>




    <!-- pdfHTML -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>html2pdf</artifactId>
        <version>2.1.2</version><!-- para itext 7.1.5 -->
        <!--version>1.0.1</version--><!-- para itext 7.0.4 -->
        <!--version>1.0.0</version--><!-- para itext 7.0.3 -->
    </dependency>

    <!-- Styled XML parser is used by iText7 modules to parse HTML and XML -->
    <!-- https://mvnrepository.com/artifact/com.itextpdf/styled-xml-parser -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>styled-xml-parser</artifactId>
        <version>${itext.version}</version>
    </dependency>


    <!-- only needed for Asian fonts -->
    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>font-asian</artifactId>
        <version>${itext.version}</version>
    </dependency>


    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.18</version>
    </dependency>

2019-02-19 更新 2

使用以下命令打开 html 文件：

1）铬，看起来不错！所有图像都可以。2）Internet Explorer 8，相同的JPG图像和另一个（PNG），不出现在页面上。3）Internet Explorer 11，所有图像都可以。

这让我更加困惑。

标签： htmlitextitext7

解决方案

我发现了问题。JPG base64 已损坏。它们仅在 HTML base64 JPG 图像中有很多“%”字符。将 XML+XSLT 转换为 HTML 时，JPG base 64 损坏。原始 XML JPG base 64 中没有“%”字符。现在我必须看看我的 trasnform 操作。谢谢。

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