Hello,

I think FileObject#getURL() suffers from the same(similar) encoding problems as 
File#toURL did. It proofed to be hard to change file, so we should I guess not 
do it for FileObject:

https://bugs.java.com/bugdatabase/view_bug.do?bug_id=61794

One option would be to add a FileObject#getURI()?

Having said that, I would still use new 
File(FileObject.getName().getPathDecoded()) instead.

Gruss
Bernd


--
http://bernd.eckenfels.net
________________________________
Von: Xeno Amess <xenoam...@gmail.com>
Gesendet: Thursday, January 23, 2020 11:45:21 PM
An: Commons Developers List <dev@commons.apache.org>
Betreff: Re: Getting File of FileObject (was: some questions (/bug?) about 
commons-vfs2 make me confused.)

class org.apache.commons.httpclient.HttpClient
interface org.apache.jackrabbit.webdav.client.methods.DavMethod
log4j: Parsing for [root] with value=[DEBUG,DEBUG_LOG,ERROR_LOG].
log4j: Level token is [DEBUG].
log4j: Category root set to DEBUG
log4j: Parsing appender named "DEBUG_LOG".
log4j: Parsing layout options for "DEBUG_LOG".
log4j: Setting property [conversionPattern] to [%-d{yyyy-MM-dd HH:mm:ss}  [
%t:%r ] - [ %p ]  %m%n].
log4j: End of parsing for "DEBUG_LOG".
log4j: Setting property [threshold] to [DEBUG].
log4j: Setting property [file] to [logs/logs.log].
log4j: Setting property [append] to [true].
log4j: setFile called: logs/logs.log, true
log4j: setFile ended
log4j: Appender [DEBUG_LOG] to be rolled at midnight.
log4j: Parsed "DEBUG_LOG" options.
log4j: Parsing appender named "ERROR_LOG".
log4j: Parsing layout options for "ERROR_LOG".
log4j: Setting property [conversionPattern] to [%-d{yyyy-MM-dd HH:mm:ss}  [
%t:%r ] - [ %p ]  %m%n].
log4j: End of parsing for "ERROR_LOG".
log4j: Setting property [file] to [logs/error.log].
log4j: Setting property [threshold] to [ERROR].
log4j: Setting property [append] to [true].
log4j: setFile called: logs/error.log, true
log4j: setFile ended
log4j: Appender [ERROR_LOG] to be rolled at midnight.
log4j: Parsed "ERROR_LOG" options.
log4j: Finished configuring.
File : file:/D:/1%201.txt
FileObject : file:///D:/1 1.txt
D:\1 1.txt
java.net.URISyntaxException: Illegal character in path at index 12:
file:///D:/1 1.txt
at java.base/java.net.URI$Parser.fail(URI.java:2936)
at java.base/java.net.URI$Parser.checkChars(URI.java:3107)
at java.base/java.net.URI$Parser.parseHierarchical(URI.java:3189)
at java.base/java.net.URI$Parser.parse(URI.java:3137)
at java.base/java.net.URI.<init>(URI.java:623)
at java.base/java.net.URL.toURI(URL.java:1048)
at FileManagerTest.test(FileManagerTest.java:66)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at
org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
at
org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at
org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at
org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at
org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at
org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at
org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at
org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:205)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:201)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
at
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at
org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at
org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
at
org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
at
org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
at
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
at
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
at
com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
at
com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at
com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)


Process finished with exit code 0

(I forgot to refresh the console. sorry.)
(Although I guess you can get what I mean)

Xeno Amess <xenoam...@gmail.com> 于2020年1月24日周五 上午6:26写道:

> OK>
> 1. I use win10, jdk 13 here.
> 2. make a file [D:/1 1.txt] , there is a character space between the two
> character '1'.
> 3. run a code like this.
>
> /*
>  * MIT License
>  *
>  * Copyright (c) 2020 XenoAmess
>  *
>  * Permission is hereby granted, free of charge, to any person obtaining a 
> copy
>  * of this software and associated documentation files (the "Software"), to 
> deal
>  * in the Software without restriction, including without limitation the 
> rights
>  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
>  * copies of the Software, and to permit persons to whom the Software is
>  * furnished to do so, subject to the following conditions:
>  *
>  * The above copyright notice and this permission notice shall be included in 
> all
>  * copies or substantial portions of the Software.
>  *
>  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
>  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
> FROM,
>  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 
> THE
>  * SOFTWARE.
>  */
>
> import com.xenoamess.cyan_potion.base.memory.ResourceManager;
> import org.apache.commons.vfs2.FileSystemException;
> import org.apache.commons.vfs2.FileSystemManager;
> import org.junit.jupiter.api.Test;
>
> import java.io.File;
> import java.net.MalformedURLException;
> import java.net.URISyntaxException;
> import java.net.URL;
>
> public class FileManagerTest {
>     @Test
>     public void test() {
>         System.out.println(org.apache.commons.httpclient.HttpClient.class);
>         
> System.out.println(org.apache.jackrabbit.webdav.client.methods.DavMethod.class);
>         FileSystemManager fileSystemManager = 
> ResourceManager.getFileSystemManager();
>
>         URL url2 = null;
>         URL url1 = null;
>
>         try {
>             url2 = new File("D:/1 1.txt").toURI().toURL();
>             System.out.println("File : " + url2);
>         } catch (MalformedURLException e) {
>             e.printStackTrace();
>         }
>
>         try {
>             url1 = fileSystemManager.resolveFile("D:/1 1.txt").getURL();
>             System.out.println("FileObject : " + url1);
>         } catch (FileSystemException e) {
>             e.printStackTrace();
>         }
>
>         try {
>             System.out.println(new File(url2.toURI()));
>         } catch (URISyntaxException e) {
>             e.printStackTrace();
>         }
>
>         try {
>             System.out.println(new File(url1.toURI()));
>         } catch (URISyntaxException e) {
>             e.printStackTrace();
>         }
>
>
>     }
> }
>
>   ResourceManager.getFileSystemManager();  is a smally changed
> VFS.getManager (I use a different slf4j version in my project so I have to
> make the Logger be null before init())
>  the result be:
>
> class org.apache.commons.httpclient.HttpClient
> interface org.apache.jackrabbit.webdav.client.methods.DavMethod
> log4j: Parsing for [root] with value=[DEBUG,DEBUG_LOG,ERROR_LOG].
> log4j: Level token is [DEBUG].
> log4j: Category root set to DEBUG
> log4j: Parsing appender named "DEBUG_LOG".
> log4j: Parsing layout options for "DEBUG_LOG".
> log4j: Setting property [conversionPattern] to [%-d{yyyy-MM-dd HH:mm:ss}
>  [ %t:%r ] - [ %p ]  %m%n].
> log4j: End of parsing for "DEBUG_LOG".
> log4j: Setting property [threshold] to [DEBUG].
> log4j: Setting property [file] to [logs/logs.log].
> log4j: Setting property [append] to [true].
> log4j: setFile called: logs/logs.log, true
> log4j: setFile ended
> log4j: Appender [DEBUG_LOG] to be rolled at midnight.
> log4j: Parsed "DEBUG_LOG" options.
> log4j: Parsing appender named "ERROR_LOG".
> log4j: Parsing layout options for "ERROR_LOG".
> log4j: Setting property [conversionPattern] to [%-d{yyyy-MM-dd HH:mm:ss}
>  [ %t:%r ] - [ %p ]  %m%n].
> log4j: End of parsing for "ERROR_LOG".
> log4j: Setting property [file] to [logs/error.log].
> log4j: Setting property [threshold] to [ERROR].
> log4j: Setting property [append] to [true].
> log4j: setFile called: logs/error.log, true
> log4j: setFile ended
> log4j: Appender [ERROR_LOG] to be rolled at midnight.
> log4j: Parsed "ERROR_LOG" options.
> log4j: Finished configuring.
> FileObject : file:///D:/1 1.txt
> File : file:/D:/1%201.txt
> java.net.URISyntaxException: Illegal character in path at index 12:
> file:///D:/1 1.txt
> at java.base/java.net.URI$Parser.fail(URI.java:2936)
> at java.base/java.net.URI$Parser.checkChars(URI.java:3107)
> at java.base/java.net.URI$Parser.parseHierarchical(URI.java:3189)
> at java.base/java.net.URI$Parser.parse(URI.java:3137)
> at java.base/java.net.URI.<init>(URI.java:623)
> at java.base/java.net.URL.toURI(URL.java:1048)
> at FileManagerTest.test(FileManagerTest.java:59)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:567)
> at
> org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
> at
> org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
> at
> org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
> at
> org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
> at
> org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
> at
> org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
> at
> org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
> at
> org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:205)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:201)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
> at
> org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
> at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
> at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
> at
> org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
> at
> org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
> at
> org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
> at
> org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
> at
> org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
> at
> org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
> at
> org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
> at
> org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
> at
> org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
> at
> org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
> at
> org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
> at
> com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
> at
> com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
> at
> com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
> at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
>
>
> Process finished with exit code 0
>
> We can skip the log4j part, then you can see, the url parser in javaio
> cannot deal with " ", and " " must be transcoded to "%20", and if not do so
> in URL, then url.toURI() will fail.
>
>
>
> Bernd Eckenfels <e...@zusammenkunft.net> 于2020年1月24日周五 上午4:21写道:
>
>> Hello,
>>
>> I am not sure I understand what the actual difference is, but you are
>> right, the URL should actually be useable. However there are a lot of
>> inconsistencies and backward compatibilities to look out for (even File
>> itself has different URL/URI methods and never defined how Windows drives
>> are to be handled). So can you give us an example path and what it looks
>> like in URL from VFS and from java.io, so we can check if there is
>> something to tweak.
>>
>> Gruss
>> Bernd
>> --
>> http://bernd.eckenfels.net
>> ________________________________
>> Von: Xeno Amess <xenoam...@gmail.com>
>> Gesendet: Thursday, January 23, 2020 2:40:59 PM
>> An: Commons Developers List <dev@commons.apache.org>
>> Betreff: Re: Getting File of FileObject (was: some questions (/bug?)
>> about commons-vfs2 make me confused.)
>>
>> I put it in dev-list because I really donot know wether it be a bug or
>> not.
>> If it be a but then I'm actually willing for help.
>> But it seems by design but not a bug here, so I apologize.
>> Still, some questions hold.
>>
>> /**
>>  * Returns a URL representing this file.
>>  *
>>  * @return the URL for the file.
>>  * @throws FileSystemException if an error occurs.
>>  */
>> URL getURL() throws FileSystemException;
>> that is the comments on getURL()
>> And IMO that is quite confusing actually.
>> You see if we use the same URL class and return it in such a public
>> method, it be normally to think it fit Java's standard, and can use
>> .URI if the protocol should be able to.
>> But the truth is the standard we used in vfs is sometimes different than
>> Java.
>> The word [Sometimes] here is very dangerous and might be a bug causer,
>> because it can pass most tests and make users feel "Oh, it just return
>> a normal URL, and it really works right."
>> So IMO at least we shall add some more warning about "not using this
>> returned URL's some functions,including to URL, they might be
>> dangerous" or "we use different standard about file:// than Java's
>> file://"
>>
>> Besides, I wonder why we must use a same URL class in vfs, if we
>> cannot guarantee it works consistently to Java lib?
>> Is it a better thought to create a new VFSURL class for URL in vfs?
>>
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