英文:
Getting java.lang.NoClassDefFoundError with PDFBox
问题
我正在尝试从Eclipse中的Java应用程序使用PDFBox库读取PDF文件。这是一个简单的PDF文本，但我遇到了以下异常：java.lang.NoClassDefFoundError: org/apache/fontbox/FontBoxFont。
我阅读了类似的帖子，但是解决方案对我不起作用。以下是我的代码：
package pdfreader;
import java.io.*;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.text.*;
public class PdfReader {
private static void readPDF(String srcPDF) {
try {
PDDocument document = PDDocument.load(new File(srcPDF));
if (!document.isEncrypted()) {
PDFTextStripper stripper = new PDFTextStripper();
String text;
text = stripper.getText(document);
System.out.println("Text:" + text);
}
document.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
String srcPDF = "Test.pdf";
readPDF(srcPDF);
}
}
跟踪信息如下：
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/fontbox/FontBoxFont
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:89)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:146)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:66)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:933)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:515)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:489)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:156)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.LegacyPDFStreamEngine.processPage(LegacyPDFStreamEngine.java:144)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:397)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:325)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:272)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.getText(PDFTextStripper.java:233)
at PDFReader/pdfreader.PdfReader.readPDF(PdfReader.java:17)
at PDFReader/pdfreader.PdfReader.main(PdfReader.java:32)
Caused by: java.lang.ClassNotFoundException: org.apache.fontbox.FontBoxFont
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 14 more
我在Eclipse的Java构建路径中包含了commons-logging-1.1.jar和pdfbox-2.0.21.jar。
英文:
I'm trying to read a PDF file with PDFBox lib from a java application in Eclipse. It's a simple PDF text but I'm getting this exception java.lang.NoClassDefFoundError: org/apache/fontbox/FontBoxFont.
I read similar posts but the solutions aren't working for me. Here is my code:
package pdfreader;
import java.io.*;
import org.apache.pdfbox.pdmodel.*;
import org.apache.pdfbox.text.*;
public class PdfReader {
private static void readPDF(String srcPDF) {
try {
PDDocument document = PDDocument.load(new File(srcPDF));
if (!document.isEncrypted()) {
PDFTextStripper stripper = new PDFTextStripper();
String text;
text = stripper.getText(document);
System.out.println("Text:" + text);
}
document.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
String srcPDF = "Test.pdf";
readPDF(srcPDF);
}
}
The trace is:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/fontbox/FontBoxFont
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:89)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:146)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:66)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:933)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:515)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:489)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:156)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.LegacyPDFStreamEngine.processPage(LegacyPDFStreamEngine.java:144)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:397)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:325)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:272)
at org.apache.pdfbox@2.0.21/org.apache.pdfbox.text.PDFTextStripper.getText(PDFTextStripper.java:233)
at PDFReader/pdfreader.PdfReader.readPDF(PdfReader.java:17)
at PDFReader/pdfreader.PdfReader.main(PdfReader.java:32)
Caused by: java.lang.ClassNotFoundException: org.apache.fontbox.FontBoxFont
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 14 more
I included commons-logging-1.1.jar and pdfbox-2.0.21.jar on my Java Build Path in Eclipse.
答案1
得分: 0
我解决方法是将 fontbox-2.0.21.jar 添加到我的路径中。
英文:
I solve it adding fontbox-2.0.21.jar on my path.
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