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이 오류가 발생하는 이유를 모르겠습니다. 이 코드는 JXLS의 예제이며 Jar 파일은 여기에서 다운로드됩니다.간단한 JXLS/Apache POI 예제가 실패합니다.
오류 코드 :
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/Workbook
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.jxls.util.TransformerFactory.loadPoiTransformer(TransformerFactory.java:85)
at org.jxls.util.TransformerFactory.getTransformerClass(TransformerFactory.java:69)
at org.jxls.util.TransformerFactory.createTransformer(TransformerFactory.java:27)
at org.jxls.util.JxlsHelper.createTransformer(JxlsHelper.java:250)
at org.jxls.util.JxlsHelper.processTemplate(JxlsHelper.java:108)
at test_excel.ObjectCollectionDemo.main(ObjectCollectionDemo.java:32)
Caused by: java.lang.ClassNotFoundException: org.apache.poi.ss.usermodel.Workbook
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 8 more
참조 된 라이브러리 :
/slf4j-1.7.25/slf4j-api-1.7.25.jar
/slf4j-1.7.25/slf4j-jdk14 -1.7.25.jar
/jxls-2.4.1 2/DIST/jxls 리더-2.0.3.jar
/jxls-2.4.1 2/DIST/jxls-POI-1.0.13.jar
/xls-2.4.1 2/dist/jxls-jexcel-1.0.6.jar
/jxls-2.4.1 2/DIST/jxls-2.4.1.jar 홈페이지 코드
: 당신이 당신의 클래스 경로에 POI-3.XX.jar이 필요한 것처럼
package test_excel;
import org.jxls.common.Context;
import org.jxls.util.JxlsHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
public class ObjectCollectionDemo {
private static Logger logger = LoggerFactory.getLogger(ObjectCollectionDemo.class);
public static void main(String[] args) throws ParseException, IOException {
logger.info("Running Object Collection demo");
List<Employee> employees = generateSampleEmployeeData();
try(InputStream is = ObjectCollectionDemo.class.getResourceAsStream("object_collection_template.xls")) {
try (OutputStream os = new FileOutputStream("object_collection_output.xls")) {
Context context = new Context();
context.putVar("employees", employees);
logger.info("OK so far...");
JxlsHelper.getInstance().processTemplate(is, os, context);
}
}
}
public static List<Employee> generateSampleEmployeeData() throws ParseException {
List<Employee> employees = new ArrayList<Employee>();
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MMM-dd", Locale.US);
employees.add(new Employee("Elsa", dateFormat.parse("1970-Jul-10"), 1500, 0.15));
employees.add(new Employee("Oleg", dateFormat.parse("1973-Apr-30"), 2300, 0.25));
employees.add(new Employee("Neil", dateFormat.parse("1975-Oct-05"), 2500, 0.00));
employees.add(new Employee("Maria", dateFormat.parse("1978-Jan-07"), 1700, 0.15));
employees.add(new Employee("John", dateFormat.parse("1969-May-30"), 2800, 0.20));
return employees;
}
}