"java.lang.SecurityException: 禁止的包名:java.sql"错误仅在 Eclipse 之外执行时发生 [英] "java.lang.SecurityException: Prohibited package name: java.sql" error happen only when executing outside of Eclipse
问题描述
我正在使用 Apache Tika 编写主题建模程序，以从其他文件类型中提取文本内容.实际上它在 Eclipse 上完美运行.但是当我导出到 JAR 文件以从 Window 10 的命令提示符使用时.当它尝试代码时会出现此错误消息:parser.parse(stream, handler, metadata, parseContext);"
I am writing a Topic Modeling program using Apache Tika to extract the text contents from other file type. Actually It run perfectly on Eclipse. But when I export to JAR file to use from command prompt of the Window 10. This error message appear when it try the code: "parser.parse(stream, handler, metadata, parseContext);"
"java.lang.SecurityException: 禁止包名:java.sql"
"java.lang.SecurityException: Prohibited package name: java.sql"
我没有在这里上传我的 java 代码，因为我认为它们不是问题的根源.因为它在 Eclipse IDE 中完美运行.那么有谁知道为什么只有当我尝试从命令行运行它时才会发生这种情况.Eclipse IDE 内部和外部的 JVM 有什么不同?谢谢.
I didn't upload my java code here because I don't think they are the root of the problem. Since it run perfectly inside Eclipse IDE. So do anyone know why it only happen when I try to run it from command line. What are the different in JVM between inside and outside of Eclipse IDE? Thank you.
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)
推荐答案
当您使用以java"开头的包的类时，会抛出禁止的包名称".在您的 rt.jar 中找不到.您自己创建了这样一个类，或者您的类路径中有一个包含此类类的 .jar 文件.
The 'prohibited package name' is thrown, when you are using a class of a package starting with 'java.' that is not found in your rt.jar. Either you created such a class yourself, or you have a .jar file containing such a class in your classpath.
如果是前者，把类放到另一个包里.如果是后者，请尝试找到包含该类的.jar 文件(例如打印出在系统属性java.class.path 中找到的类路径)
If it's the former, put the class in another package. If it's the latter, try to find the .jar file containing this class (e.g. print out the classpath found in the system property java.class.path)
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