FileWritableDataSource :file:/xx/xx.jar!/BOOT-INF/classes!/FlowRule.json (no such file or directory)

[dqing0]

Issue Description

FileWritableDataSource ：file:/xx/xx.jar!/BOOT-INF/classes!/FlowRule.json (没有那个文件或目录)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.(FileOutputStream.java:213)
at java.io.FileOutputStream.(FileOutputStream.java:162)
at com.alibaba.csp.sentinel.datasource.FileWritableDataSource.write(FileWritableDataSource.java:73)
at com.alibaba.csp.sentinel.command.handler.ModifyRulesCommandHandler.writeToDataSource(ModifyRulesCommandHandler.java:108)
at com.alibaba.csp.sentinel.command.handler.ModifyRulesCommandHandler.handle(ModifyRulesCommandHandler.java:68)
at com.alibaba.csp.sentinel.transport.command.http.HttpEventTask.run(HttpEventTask.java:89)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

Describe what happened (or what feature you want)

i wanted to load local FlowRule.json,when i run application with jar,i found the error.
i think the new File(filepath) method dont work,when the file in jar

[sentinel-bot]

Hi @dqing0, we detect non-English characters in the issue. This comment is an auto translation from @sentinel-bot to help other users to understand this issue.
We encourage you to describe your issue in English which is more friendly to other users.

FileWritableDataSource :file:/xx/xx.jar!/BOOT-INF/classes!/FlowRule.json (no such file or directory)

Issue Description

FileWritableDataSource :file:/xx/xx.jar!/BOOT-INF/classes!/FlowRule.json (no such file or directory)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.(FileOutputStream.java:213)
at java.io.FileOutputStream.(FileOutputStream.java:162)
at com.alibaba.csp.sentinel.datasource.FileWritableDataSource.write(FileWritableDataSource.java:73)
at com.alibaba.csp.sentinel.command.handler.ModifyRulesCommandHandler.writeToDataSource(ModifyRulesCommandHandler.java:108)
at com.alibaba.csp.sentinel.command.handler.ModifyRulesCommandHandler.handle(ModifyRulesCommandHandler.java:68)
at com.alibaba.csp.sentinel.transport.command.http.HttpEventTask.run(HttpEventTask.java:89)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

Describe what happened (or what feature you want)

i wanted to load local FlowRule.json,when i run application with jar,i found the error.
i think the new File(filepath) method dont work,when the file in jar

[sczyh30]

Hi, please check whether your file path is correct.

[dqing0]

file path is correct, when i use intellij ,it work.But ,when i package, use 'java -jar xx.jar',it faild. i think the reason is that the method **new File(path) ** cannot read the file in jar

[sczyh30]

Maybe you can try this: https://stackoverflow.com/questions/20389255/reading-a-resource-file-from-within-jar

[fangjian0423]

@sczyh30

FileRefreshableDataSource needs java.io.File as constructor parameter and we couldn't get file in jar.

Maybe we need java.io.InputStream as the constructor parameter of FileRefreshableDataSource.

Then we could write a overload constructor method to accept java.io.InputStream.

[dqing0]

i know the way,but the load file in your sentinel-datasource-extension.jar,i cant rewrite

[dqing0]

@sczyh30

FileRefreshableDataSource needs java.io.File as constructor parameter and we couldn't get file in jar.

Maybe we need java.io.InputStream as the constructor parameter of FileRefreshableDataSource.

Then we could write a overload constructor method to accept java.io.InputStream.

you are right

[fangjian0423]

@dqing0

welcome to contribute. You could create pull request to enhance it.

[dqing0]

@dqing0

welcome to contribute. You could create pull request to enhance it.

fine,i will do that,thanks @fangjian0423 @sczyh30

[sczyh30]

Contributions are welcomed :)