java.lang.NoClassDefFoundError: org/fontbox/afm/FontMetric

问题

I am using pdfbox-0.7.3.jar. I know missing related class files belongs to JAR pdfbox-0.7.3 but when i attach the source file. keep showing missing .class files. i am seeking for suggestions on the below error.

    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import org.pdfbox.cos.COSDocument;
    import org.pdfbox.pdfparser.PDFParser;
    import org.pdfbox.pdmodel.PDDocument;
    import org.pdfbox.util.PDFTextStripper;
    import java.lang.NoClassDefFoundError;
    import java.util.Scanner;
        public class ggg{
        public static void main(String args[]) {
           // PDFTextStripper pdfStripper = null;
               // PDDocument pdDoc = null;
           // COSDocument cosDoc = null;
            File file = new File("C:\\Users\\firstfile.pdf");
            try {
                PDFParser parser = new PDFParser(new FileInputStream(file));
                parser.parse();
                COSDocument   cosDoc = parser.getDocument();
                PDFTextStripper   pdfStripper = new PDFTextStripper();
                PDDocument pdDoc = new PDDocument(cosDoc); 
                pdfStripper.setStartPage(1);
                pdfStripper.setEndPage(5);
                String parsedText = pdfStripper.getText(pdDoc);
                System.out.println(parsedText);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } 
        }
    }
Exception in thread "main" java.lang.NoClassDefFoundError: org/fontbox/afm/FontMetric
    at org.pdfbox.pdmodel.font.PDFont.getAFM(PDFont.java:334)
    at org.pdfbox.pdmodel.font.PDSimpleFont.getFontHeight(PDSimpleFont.java:104)
    at org.pdfbox.util.PDFStreamEngine.showString(PDFStreamEngine.java:336)
    at org.pdfbox.util.operator.ShowTextGlyph.process(ShowTextGlyph.java:80)
    at org.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:452)
    at org.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:215)
    at org.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:174)
    at org.pdfbox.util.PDFTextStripper.processPage(PDFTextStripper.java:336)
    at org.pdfbox.util.PDFTextStripper.processPages(PDFTextStripper.java:259)
    at org.pdfbox.util.PDFTextStripper.writeText(PDFTextStripper.java:216)
    at org.pdfbox.util.PDFTextStripper.getText(PDFTextStripper.java:149)
    at ggg.main(ggg.java:30)

回答1:

Seems that you are not using any build tool.

Unfortunately, this library has additional dependencies.

org.fontbox.afm.FontMetric is a class that is located in fontbox-0.1.0.jar

You can go to Maven Central - PDF Box and download and add all libraries mentioned in dependencies to your project.

What else you can do is to setup a maven project. And add this dependency to your pom.xml. To do this you need:

Install maven
Create a project using maven command line command

mvn -B archetype:generate \ -DarchetypeGroupId=org.apache.maven.archetypes \ -DgroupId=com.mycompany.app \ -DartifactId=my-app
Add maven PDF dependency to pom.xml file to the section <dependendencies>

<dependency> <groupId>pdfbox</groupId> <artifactId>pdfbox</artifactId> <version>0.7.3</version> </dependency>
Open your generated project as a Maven project inside your IDE (in your case it is Eclipse)
Refresh project in IDE and let Eclipse download library with all dependencies for you.

来源：https://stackoverflow.com/questions/44541845/java-lang-noclassdeffounderror-org-fontbox-afm-fontmetric

标签

java

eclipse

pdfbox