try {
File file = new File("Example.pdf");
String content = new Tika().parseToString(file);
System.out.println("The Content: " + content);
} catch (Exception e) {
e.printStackTrace();
}
我已导入java.io.File
并导入org.apache.tika.Tika
;
但在运行此代码时,我收到的错误是这样的:
线程中的异常" main" java.lang.NoSuchMethodError:org.slf4j.spi.LocationAwareLogger.log(Lorg / slf4j / Marker; Ljava / lang / String; ILjava / lang / String; Ljava / lang / Throwable;)V 在org.apache.commons.logging.impl.SLF4JLocationAwareLog.warn(SLF4JLocationAwareLog.java:162) 在org.apache.pdfbox.pdmodel.font.FileSystemFontProvider.loadDiskCache(FileSystemFontProvider.java:461) 在org.apache.pdfbox.pdmodel.font.FileSystemFontProvider。(FileSystemFontProvider.java:217) at org.apache.pdfbox.pdmodel.font.FontMapperImpl $ DefaultFontProvider。(FontMapperImpl.java:130) at org.apache.pdfbox.pdmodel.font.FontMapperImpl.getProvider(FontMapperImpl.java:149) 在org.apache.pdfbox.pdmodel.font.FontMapperImpl.findFont(FontMapperImpl.java:413) at org.apache.pdfbox.pdmodel.font.FontMapperImpl.findFontBoxFont(FontMapperImpl.java:376) at org.apache.pdfbox.pdmodel.font.FontMapperImpl.getFontBoxFont(FontMapperImpl.java:350) 在org.apache.pdfbox.pdmodel.font.PDType1Font。(PDType1Font.java:146) 在org.apache.pdfbox.pdmodel.font.PDType1Font。(PDType1Font.java:79) 在org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:62) 在org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:143) 在org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:60) 在org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:838) 在org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:495) at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:469) 在org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:150) at org.apache.pdfbox.text.LegacyPDFStreamEngine.processPage(LegacyPDFStreamEngine.java:139) at org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:391) 在org.apache.tika.parser.pdf.PDF2XHTML.processPage(PDF2XHTML.java:147) at org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:319) at org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:266) 在org.apache.tika.parser.pdf.PDF2XHTML.process(PDF2XHTML.java:117) 在org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:167) 在org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) 在org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) 在org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135) 在org.apache.tika.Tika.parseToString(Tika.java:527) 在org.apache.tika.Tika.parseToString(Tika.java:642) 在java_programs.PdfParse.main(PdfParse.java:22)
答案 0 :(得分:2)
以下似乎对我有用。 我得到了我想要的字符串,但我也在控制台中打印了一些警告。
[在Windows上]我编译并运行它:
javac -cp .;tika-app-1.16.jar Test.java
java -cp .;tika-app-1.16.jar Test
你正在使用什么tika jar?
我添加了另一种方法(tikaPdfTest()
),以显示从PDF中获取可能对您有帮助的文本的不同方法。
import java.io.File;
import org.apache.tika.Tika;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.pdf.PDFParser;
import org.apache.tika.sax.BodyContentHandler;
import org.apache.tika.Tika;
import org.xml.sax.SAXException;
public class Test {
public static void main(final String[] args) {
//Your way
try {
File file = new File("Example.pdf");
String content = new Tika().parseToString(file);
System.out.println("The Content: " + content);
} catch (final Exception e) {
e.printStackTrace();
}
//Another way
try {
System.out.println("The contents:\t[" + Test.tikaPdfTest("Example.pdf") + "]");
} catch (final Exception e) {
e.printStackTrace();
}
}
public static String tikaPdfTest(final String fileName) throws IOException, SAXException, TikaException {
try(final FileInputStream inputstream = new FileInputStream(new File(fileName))) {
final BodyContentHandler handler = new BodyContentHandler();
new PDFParser().parse(inputstream, handler, new Metadata(), new ParseContext());
return handler.toString().trim();
}
}
}