Java 使用Jackcess加密原因“;NoClassDefFoundError“;科贝图拉例外
我试图用一个非常简单的程序读取一个带有jet编码的mdb文件Java 使用Jackcess加密原因“;NoClassDefFoundError“;科贝图拉例外,java,ms-access,jackcess,Java,Ms Access,Jackcess,我试图用一个非常简单的程序读取一个带有jet编码的mdb文件 import java.io.File; import java.io.IOException; import com.healthmarketscience.jackcess.CryptCodecProvider; import com.healthmarketscience.jackcess.Database; import com.healthmarketscience.jackcess.DatabaseBuilder; im
import java.io.File;
import java.io.IOException;
import com.healthmarketscience.jackcess.CryptCodecProvider;
import com.healthmarketscience.jackcess.Database;
import com.healthmarketscience.jackcess.DatabaseBuilder;
import com.healthmarketscience.jackcess.Row;
import com.healthmarketscience.jackcess.Table;
public class ReadFile {
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
File myDbFile = new File("C:\\Users\\jcace\\Downloads\\TSC\\DB1.mdb");
Database db = new DatabaseBuilder(myDbFile)
.setCodecProvider(new CryptCodecProvider())
.open();
Table table = db.getTable("VBV");
for(Row row : table) {
System.out.println("Look ma, a row: " + row);
}
} catch (IOException e){
e.printStackTrace();
}
}
}
我有以下图书馆的额外服务
- commons-logging-1.2\commons-logging-1.2.jar
- commons-logging-1.2\commons-logging-1.2-javadoc.jar
- commons-lang-2.6\commons-lang-2.6.jar
- jackcess-encrypt-2.1.2.jar
- hamcrest-core-1.3.jar
- junit-4.11.jar
- jackcess-2.1.0.jar
- bcprov-jdk15on-1.49.jar
Exception in thread "main" java.lang.NoClassDefFoundError:
net/sourceforge/cobertura/coveragedata/TouchCollector
at com.healthmarketscience.jackcess.CryptCodecProvider.__cobertura_init(CryptCodecProvider.java)
at com.healthmarketscience.jackcess.CryptCodecProvider.<clinit>(CryptCodecProvider.java)
at HelloWorld.main(HelloWorld.java:17)
Caused by: java.lang.ClassNotFoundException: net.sourceforge.cobertura.coveragedata.TouchCollector
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 3 more
线程“main”java.lang.NoClassDefFoundError中出现异常:
net/sourceforge/cobertura/coveragedata/TouchCollector
在com.healthmarketscience.jackcess.cryptocodeprovider.\uu cobertura\u init(cryptocodeprovider.java)
请访问com.healthmarketscience.jackcess.cryptocodeprovider.(cryptocodeprovider.java)
位于HelloWorld.main(HelloWorld.java:17)
原因:java.lang.ClassNotFoundException:net.sourceforge.cobertura.coveragedata.TouchCollector
位于java.net.URLClassLoader.findClass(URLClassLoader.java:381)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:424)
位于sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 3个以上
我尝试使用以下Bouncy crypt库
- bcprov-jdk15on-157.jar
- bcprov-jdk15on-152.jar
- bcprov-jdk15on-151.jar
- bcprov-jdk15on-150.jar
- bcprov-jdk15on-149.jar
我不知道为什么,但这使我有可能完成这项工作。应该在jackcess encrypt 2.1.3版本中修复。您是否有
HelloWorld.java
文件。假设它抱怨第17行。认为Cobertura有问题:谢谢,我使用jackcess-encrypt-2.1.0.jar库和bcprov-ext-jdk15on-1.49.jar解决了这个问题