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https://github.com/aslakhellesoy/maven-utf8-jdk7-woes
https://github.com/aslakhellesoy/maven-utf8-jdk7-woes
Last synced: about 1 month ago
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- Host: GitHub
- URL: https://github.com/aslakhellesoy/maven-utf8-jdk7-woes
- Owner: aslakhellesoy
- Created: 2012-10-04T18:26:56.000Z (about 12 years ago)
- Default Branch: master
- Last Pushed: 2012-10-04T21:39:02.000Z (about 12 years ago)
- Last Synced: 2024-04-14T15:13:28.681Z (8 months ago)
- Language: Java
- Size: 136 KB
- Stars: 2
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Maven on JDK 7 can't compile classes with UTF-8 characters in the name.
*UPDATE*
Found the solution at [Stack Overflow](http://stackoverflow.com/questions/3610013/file-listfiles-mangles-unicode-names-with-jdk-6-unicode-normalization-issues) and fixed it in [this commit](https://github.com/cucumber/cucumber-jvm/commit/1298878e8faabfe22305d086c1151898ac1d595c). Good work by David Kowis, Sébastien Le Callonnec on [#cucumber](http://irclogger.com/.cucumber/2012-10-04).
Any tips about how to work around that would be greatly appreciated so I can build [Cucumber-JVM](https://github.com/cucumber/cucumber-jvm) on JDK 7. (Its i18n support uses classes with such weird characters).
I have posted a ticket: [MCOMPILER-183](http://jira.codehaus.org/browse/MCOMPILER-183).
How to reproduce:
## Works on both JDK 6 and JDK 7
```
mkdir -p target/classes
javac -encoding UTF-8 -d target/classes src/main/java/com/aslakhellesoy/Æøå.java
```
## Works on JDK 6, but *not* on JDK 7
```
mvn -X clean compile
```
See `mvn-jdk6.log` and `mvn-jdk7.log` to see why.
It turns out that when running on JDK 7, Maven tells javac to compile a file named `com/aslakhellesoy/Æøå.java`. It should be `com/aslakhellesoy/Æøå.java`.
I also tried `mvn -Dfile.encoding=UTF-8 clean compile`, but that did not help.
## Digging deeper
Try this on both JDK 6 and JDK 7:
```
javac Ls.java && java Ls | hexdump
```
JDK 7 gives this:
```
0000000 c3 86 c3 b8 61 cc 8a 2e 6a 61 76 61 3a 20 74 72
0000010 75 65 0a
0000013
```
JDK 6 gives this:
```
0000000 ae bf 8c 2e 6a 61 76 61 3a 20 74 72 75 65 0a
000000f
```
Not the same!! Apparently it's consistent on Linux, but not on OS X.
Another thing to try on both JDKs:
```
javac Ls.java && java Ls hex
```
JDK 7 gives this:
```
-0000000000000003c793c479e3375d1959e899f
```
JDK 6 gives this:
```
-000000000000000003c793c473c5ad1959e899f
```
It's clear that this has nothing to do with the terminal. It's something on the Filesystem level or System encoding level.
## Versions:
JDK 7 `mvn --version`
```
Apache Maven 3.0.3 (r1075438; 2011-02-28 17:31:09+0000)
Maven home: /usr/share/maven
Java version: 1.7.0_06-ea, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.7.4", arch: "x86_64", family: "mac"
```
JDK 6 `mvn --version`
```
Apache Maven 3.0.3 (r1075438; 2011-02-28 17:31:09+0000)
Maven home: /usr/share/maven
Java version: 1.6.0_33, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.7.4", arch: "x86_64", family: "mac"
```
Maven