问题
I did some search already regarding this run time error:
java.lang.NoClassDefFoundError: Failed resolution of: Lorg/slf4j/LoggerFactory
and here's the "libs" in my Android project:
As you can see, slf4j-android-1.7.25.jar in there. I also tried latest slf4j-android-1.7.30.jar, still having this issue.
Basically, I am trying to convert MS WORD file to pdf and here's the code I am trying which I found somewhere:
public static void docToPdf(InputStream is, String outputPath){
WordprocessingMLPackage wordMLPackage = null;
try {
wordMLPackage = WordprocessingMLPackage.load(is);
} catch (Docx4JException e) {
e.printStackTrace();
}
List sections = wordMLPackage.getDocumentModel().getSections();
for (int i = 0; i < sections.size(); i++) {
wordMLPackage.getDocumentModel().getSections().get(i)
.getPageDimensions();
}
Mapper fontMapper = new IdentityPlusMapper();
PhysicalFont font = PhysicalFonts.getPhysicalFonts().get(
"Comic Sans MS");//set your desired font
fontMapper.getFontMappings().put("Algerian", font);
try {
wordMLPackage.setFontMapper(fontMapper);
} catch (Exception e) {
e.printStackTrace();
}
/* PdfSettings pdfSettings = new PdfSettings();
org.docx4j.convert.out.pdf.PdfConversion conversion = new org.docx4j.convert.out.pdf.viaXSLFO.Conversion(
wordMLPackage);
//To turn off logger
List<Logger> loggers = Collections.<Logger> list(LogManager. getCurrentLoggers());
loggers.add(LogManager.getRootLogger());
for (Logger logger : loggers) {
logger.setLevel(Level.OFF);
}*/
OutputStream out = null;
try {
out = new FileOutputStream(new File(outputPath));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
/*conversion.output(out, pdfSettings);*/
try {
Docx4J.toPDF(wordMLPackage, out);
} catch (Docx4JException e) {
e.printStackTrace();
}
System.out.println("DONE!!");
}
Further down in console, I can see another error message:
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.slf4j.LoggerFactory" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", ...
回答1:
You need to add slf4j-api-1.7.30.jar
in lib folder. As org.slf4j.LoggerFactory class is available in slf4j-api.jar.
Download the latest jar file from SLF4J distribution.
来源:https://stackoverflow.com/questions/61015394/android-java-lang-noclassdeffounderror-failed-resolution-of-lorg-slf4j-logge