仅在Eclipse外部执行时,才会发生“ java.lang.SecurityException：禁止的包名称：java.sql”错误

我正在使用Apache Tika编写主题建模程序,以从其他文件类型提取文本内容.实际上,它可以在Eclipse上完美运行.但是,当我从窗口10的命令提示符中导出到JAR文件以使用时,在尝试代码时出现此错误消息：“ parser.parse(stream,handler,metase,parseContext);”

“ java.lang.SecurityException：禁止的程序包名称：java.sql”

我没有在此处上传Java代码,因为我认为它们不是问题的根源.由于它可以在Eclipse IDE中完美运行.所以有人知道为什么只有在我尝试从命令行运行它时才会发生这种情况. Eclipse IDE内部和外部之间的JVM有何不同？谢谢.

        package Views;

import java.io.*;
import org.apache.commons.io.FileUtils;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.AutoDetectParser;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.sax.BodyContentHandler;

public class TestTika {

    public static void main(String[] args) throws IOException {
        String inputFolderName = "data";
        String outputFolderName = "data_text";
        System.out.println("Extracting text data from '" + inputFolderName + "' to '" + outputFolderName + "'");

        FileUtils.deleteDirectory(new File(outputFolderName)); // Delete the old file in this directory
        System.out.println("Delete all of the old files in directory'" + outputFolderName + "' successfully \n");

        if (new File(outputFolderName).mkdir()) {
            System.out.println("Created folder '"+ outputFolderName );
        }

        File inputFolder = new File(inputFolderName);
        File[] listOfFiles = inputFolder.listFiles();

        String fileName;

        for (File file : listOfFiles) {
            if (file.isFile()) {
                fileName = file.getName();
                System.out.println("\n" + fileName);
                BodyContentHandler handler = new BodyContentHandler();
                AutoDetectParser parser = new AutoDetectParser();
                Metadata metadata = new Metadata();
                ParseContext parseContext = new ParseContext();
                FileInputStream stream = new FileInputStream(new File(inputFolderName + "/" + fileName));
                try {

//////////////////////////////////// Error: Prohibited package name: java.sql ////////////////////////////////
//////////////////////////////////// /////////////////////////////////////////////////////////////////////////

                    parser.parse(stream, handler, metadata, parseContext);

                } catch (Exception e) {
                    System.out.println("Warning: Error when processing file:" + fileName
                            + " . This file will be igrored! \n" + e.getMessage() + "\n" + e.toString());
                    e.printStackTrace();
                    continue;
                } finally {
                    stream.close();
                }
                String s = handler.toString();
                Writer writer = null;
                try {
                    writer = new BufferedWriter(new OutputStreamWriter(
                            new FileOutputStream(outputFolderName + "/" + fileName + ".txt"), "utf-8"));
                    writer.write(s);
                } catch (IOException ex) {
                    // report
                    System.out.println("Warning: Error when saving file:" + fileName
                            + ".txt  . This file had been ignore! \n" + ex.getMessage());
                    continue;
                } finally {
                    try {
                        writer.close();
                    } catch (Exception ex) {
                        /* ignore */}
                }
            }

        }
        System.out.println("Extracting text data from document files has been completed!");
        return;

    }

}

java.lang.SecurityException: Prohibited package name: java.sql
        at java.base/java.lang.ClassLoader.preDefineClass(Unknown Source)
        at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
        at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
        at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
        at java.base/java.net.URLClassLoader.access$100(Unknown Source)
        at java.base/java.net.URLClassLoader$1.run(Unknown Source)
        at java.base/java.net.URLClassLoader$1.run(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.base/java.net.URLClassLoader.findClass(Unknown Source)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
        at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:113)
        at Views.TestTika.main(TestTika.java:43)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.base/java.lang.reflect.Method.invoke(Unknown Source)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)

解决方法:

当您使用以“ java”开头的类时,将抛出“禁止的软件包名称”.在您的rt.jar中找不到.您可以自己创建一个此类,或者在类路径中有一个包含此类的.jar文件.

如果是前者,则将该类放在另一个包中.如果是后者,请尝试查找包含此类的.jar文件(例如,打印出在系统属性java.class.path中找到的类路径)

标签：java,eclipse,apache-tika
来源： https://codeday.me/bug/20191012/1900225.html