Question

我需要找到,在我的 Java口中标有。这是为了进行分解,因此欢迎各种工具或公用事业。

如果发现<>标的<>/>号太具体,<>/strong>也将非常有益。

Answer 1

这可能是欺骗性的。您可以首先使用简介员,例如VisualVER(免费)或YourKit(没有自由)查询java.Filea。如果你能够找到你重新关心的道路,那就有可能把你引向正确的方向。问题在于,档案物体不一定必须存在,才能打开档案。

您的下一步可能是在 FileInputStream 和上设。文件: (除非你知道档案是否正在阅读或书写),附上一份夸张,并看你档案由其中一人打开。) 但当然还有其他开案途径。 http://download.oracle.com/javase/6/docs/api/java/lang/Class.html#getResourceAsStream%28java.lang.String%29”rel=“nofollow” 页: 1

您的最后手段可以是尝试一个总括性的变迁,例如 ODB 或 nofollow>。我在他们身上的经验有限,但他们声称“知道一切”。你们必须说明如何提出正确的问题。

Answer 2

下面是Windows和IntelliJ,尽管在其他操作系统和IDEs中可能相似。

此外,根据JDK内部情况,为JDK11撰写了以下文字:

Find out the handle of the file. For this you can use the Windows Sysinternals Handle tool (see also this Server Fault question):
```
.handle64.exe -p java
```
In the output search for the relevant file, e.g.:
```
D7C: File          C:UsersSomeonemyfile.txt
```
(Note: Most terminals provide a search function, for cmd.exe it is Ctrl + F; for Windows Terminal it is Ctrl + ⇧ + F.)
The value before the colon is important (in this example D7C), note it down.
In IntelliJ pause execution with the debugger.
Open the Memory tab
Search for java.io.FileDescriptor
Right-click the result and select "Show Instances"
As condition enter handle == 0xhandle, with handle being the value you noted down in step 2 (in this example handle == 0xD7C).
(Note: Under Unix you might have to compare fd == instead.)
➔ You should see a single result
Right-click the result and select "Show Referring Objects..."
On the results you can then continue selecting "Show Referring Objects..." until you found the relevant result (the reference in FileCleanable can most likely be ignored)

This won t always answer which caller forgot to close the file, but it might give a hint. You can then for example set further breakpoints in the relevant classes to find out who opened the file.

Answer 3

Use AspectJ and intercept calls to various flavors of opening file streams. Use an around aspect. Note this can only tell you which object opens the stream, but obviously the object can pass around references to the stream, so ...

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