【问题标题】:FOP batik NoClassDefFoundError: org/apache/batik/bridge/UserAgentFOP 蜡染 NoClassDefFoundError: org/apache/batik/bridge/UserAgent
【发布时间】:2019-06-19 02:51:22
【问题描述】:

我不使用 maven、pom 或任何东西。我只有简单的测试类进行测试,我只是尝试将 XSL-FO 转换为 PDF,我得到了这个错误。 代码很简单:

package testing;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream; 

import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.sax.SAXResult; 

import javax.xml.transform.Result; 
import javax.xml.transform.TransformerFactory; 
import javax.xml.transform.stream.StreamSource; 

import org.apache.fop.apps.Fop; 
import org.apache.fop.apps.FopFactory; 

import org.apache.xmlgraphics.util.MimeConstants;


    public class test {

    public static void main(String[] args) {
        String pth="C:/Temp/";
        FopFactory fopFactory = FopFactory.newInstance(new File(".").toURI());
        TransformerFactory factory = TransformerFactory.newInstance();
        OutputStream out;
        try
        {   
        out = new BufferedOutputStream(new FileOutputStream(new File(pth+"myfile.pdf")));

        InputStream in = new FileInputStream(pth+"everything.fo");

        Source source = null;
        Transformer transformer = factory.newTransformer();
        source = new StreamSource(in);      
        Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, out);
        Result res = new SAXResult(fop.getDefaultHandler());
        transformer.transform(source, res);         
        } catch (Exception e)
        {
            e.printStackTrace();;
        }       
    }
}

这是结果:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/batik/bridge/UserAgent
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
    at java.lang.Class.getConstructor0(Class.java:3075)
    at java.lang.Class.getDeclaredConstructor(Class.java:2178)
    at org.apache.xmlgraphics.util.Service.providers(Service.java:85)
    at org.apache.xmlgraphics.image.loader.spi.ImageImplRegistry.discoverClasspathImplementations(ImageImplRegistry.java:115)
    at org.apache.xmlgraphics.image.loader.spi.ImageImplRegistry.<init>(ImageImplRegistry.java:79)
    at org.apache.xmlgraphics.image.loader.spi.ImageImplRegistry.<init>(ImageImplRegistry.java:87)
    at org.apache.xmlgraphics.image.loader.spi.ImageImplRegistry.<clinit>(ImageImplRegistry.java:71)
    at org.apache.xmlgraphics.image.loader.ImageManager.<init>(ImageManager.java:64)
    at org.apache.fop.apps.FopFactoryBuilder$FopFactoryConfigImpl.<init>(FopFactoryBuilder.java:381)
    at org.apache.fop.apps.FopFactoryBuilder.<init>(FopFactoryBuilder.java:90)
    at org.apache.fop.apps.FopFactoryBuilder.<init>(FopFactoryBuilder.java:81)
    at org.apache.fop.apps.FopFactoryBuilder.<init>(FopFactoryBuilder.java:71)
    at org.apache.fop.apps.FopFactory.newInstance(FopFactory.java:143)
    at testing.test5.main(test5.java:37)
Caused by: java.lang.ClassNotFoundException: org.apache.batik.bridge.UserAgent
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 16 more

这是我的库:

我做错了什么? 正如我所说,我不使用 POM、MAVEN 等,只是用于测试目的的简单 java 代码。我知道有一些依赖关系,但没有 POM 我如何管理这些东西?

这是我的 FO 文件: everything.fo

【问题讨论】:

    标签: xsl-fo apache-fop batik


    【解决方案1】:

    关于这个问题,我已经使用最新版本的蜡染解决了我的问题。

    在 POM.xml 我有这个:

    <dependency> 
    <groupId>org.apache.xmlgraphics</groupId> 
    <artifactId>batik-bridge</artifactId> 
    <version>1.11</version> 
    </dependency> 
    

    【讨论】:

    • 在我这边,当我解析一些特定的 PPTx 文件时,Apache POI 触发了这个错误。现在已经解决了。谢谢
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