The format is rather unusual.
The time is 16 bits: 5 bits for the hour, 6 bits for the minutes, and 5
bits for the seconds. 5 bits only allows 32 values (0-31) so the number
must be doubled, meaning that the time is only accurate to the nearest
two seconds. Also, the JDK rounds this down by subtracting one. The
doubling and rounding is performed by shifting one place to the left
and masking off the right-most bit respectively.
The date is 16 bits: 7 bits for the year, 4 bits for the month, and 5
bits for the day. The year is from 1980, i.e. the earliest date that
can be represented is 1980-01-01.
See http://mindprod.com/jgloss/zip.html for more details of the format.
Fixes gh-2826
If user runs an executable archive then it and its lib directory will be
on the classpath. Entries from loader.path take precedence in a way that
should make sense to users (earlier wins like in CLASSPATH env var).
Also added new integration tests to verify the behaviour (big improvement
on the old ones, which probably aought to be beefed up to the same
standard).
Fixes gh-2314
Previously, WarLauncher included its root on the classpath. It also used
a filtered version of its root archive to hide both the WEB-INF and
META-INF directories. This meant that files in WEB-INF and META-INF
could be found by the classloader (as they were on the classpath) but
could not be read as the filtered archive was hiding them.
This commit updates WarLauncher to remove the root of the war file from
the classpath. It also removes the filtering of the archive, thereby
allowing files in META-INF and WEB-INF to be accessed via the
ServletContext.
Closes gh-1792
* Windows: allow absolute file paths without file:/// prefix
* All: only add nested archives (not directories), so loader.path=lib/*
behaves the same as -classpath=lib/* (except for adding zip files)
Fixes gh-1352
The ExplodedArchive would erroneously always attempt to filter
its contents (and thereby shield them from a classloader that wrapped
it) even if they haven't been explicitly provided.
See gh-1352
Use Java 7 `registerAsParallelCapable` and `getClassLoadingLock` methods
when possible. This should improve performance when running on JDK 7+
whilst still remaining JDK 6 compatible.
Closes gh-1284
Fix 'fat jar' support for windows to correctly deal with URL and path
slash issues. The root cause of the original problem was caused by JAR
URLs not including a root slash (ie `file:C:/Users` vs `file:/C:/Users`)
Fixes gh-1145
Update ExecutableArchiveLauncher so that `-cp` URLs are not added
when they are already contained as nested JARs. This prevents a
SecurityException "signer information does not match error" when using
signed jars. The root cause of the issue was that the primary JAR file
was on the default classpath with the URL "file:....jar" and in the
main URL set as "jar:file:....jar". It is now filtered so that only
the "jar:" variant is added.
Fixes gh-1134
Update the executable JAR code to automatically unpack any entries
which include an entry comment starting `UNPACK:` to the temp folder.
The existing Maven and Gradle plugins have been updated with new
configuration options and the `spring-boot-tools` project has been
updated to write the appropriate entry comment based on a flag passed
in via the `Library` class.
This support has been added to allow libraries such a JRuby (which
assumes that `jruby-complete.jar` is always accessible as file) to work
with Spring Boot executable jars.
Fixes gh-1070
Update JarURLConnection to allow the resolution of items within a nested
jar, even if the jarFile passed to the connection is several levels up.
This prevent a connection from incorrectly resolving an entry against
the wrong jar file.
See gh-1070
Tweak 'fat jar' handling to generally improve performance:
- Allow JarURLConnection to throw a static FileNotFoundException when
loading classes. This exception is thrown many times when attempting
to load a class and is silently swallowed so there is no point in
providing the entry name.
- Expose JarFile.getJarEntryData(AsciiBytes) and store AsciiBytes in
the JarURLConnection. Previously AsciiBytes were created, discarded
then created again.
- Use EMPTY_JAR_URL for the JarURLConnection super constructor. The URL
is never actually used so we can improve performance by using a
constant.
- Extract JarEntryName for possible caching. The jar entry name
extracted from the URL is now contained in an inner JarEntryName
class. This could be cached if necessary (although currently it is
not because no perceivable performance benefit was observed)
Fixes gh-1119
Update JarFile to reuse the previously parsed entries when creating
filtered jars. This saves needing to re-scan the underlying file to
recreate a subset of entries.
See gh-1119
Drop JarEntryFilter arguments from the JarFile constructor and the
getNestedJarFile methods. Filtered JarFiles can still be obtained by
using the getFilteredJarFile() method.
This helps simplify the code a little and will make it easier to add
caching.
See gh-1119
Update `spring-boot-loader` ZIP processing code to support prefixed
bytes within the fat jar. This technique allows a bash script to be
embedded at the start of the JAR whilst still allowing `java -jar`
execution.
Fixes gh-1073
Unify the versions used in integration tests launched by the
maven-invoker-plugin. Allows for already cached local copies to be
used, hopefully speeding up the build.
Unify the versions used in integration tests launched by the
maven-invoker-plugin. Allows for already cached local copies to be
used, hopefully speeding up the build.
Unify the versions used in integration tests launched by the
maven-invoker-plugin. Allows for already cached local copies to be
used, hopefully speeding up the build.
ExecutableArchiveLauncher creates a ClassLoader that is used by the
Launcher to load an application’s classes. During the creation of this
ClassLoader URLs from another ClassLoader are copied over. This was
resulting in Java agents that are added to the system class loader
via the -javaagent launch option being available on both the system
class loader and the created class loader. Java agents are intended to
always be loaded by the system class loader. Making them available on
another class loader breaks this model.
This commit updates ExecutableArchiveLauncher so that it skips the URLs
of any Java agents (found by examining the JVM’s input arguments) when
copying URLs over to the new classloader, thereby ensuring that Java
agents are only ever loaded by the system class loader.
Fixes#863
The problem all along has been in AsciiBytes, so the fix in
commit ce3aaf was just a stop gap for a system where multi-byte
characters are supported but the default encoding is not UTF-8 (e.g.
most Windows systems). The real solution is not to leave it to
chance and always pick an encoding for the JarEntry names (i.e.
in AsciiBytes).
(Cherry picked from commit 06e364a9ff)
Fixes gh-764
The problem all along has been in AsciiBytes, so the fix in
commit ce3aaf was just a stop gap for a system where multi-byte
characters are supported but the default encoding is not UTF-8 (e.g.
most Windows systems). The real solution is not to leave it to
chance and always pick an encoding for the JarEntry names (i.e.
in AsciiBytes).
Fixes gh-764
The encoding of UTF-8 (et al.) chars in the
JarUrlConnection has to be made explicit, otherwise
Wdinows apparently does not pick the default(?).
Fixes gh-711, Fixes gh-753
The encoding of UTF-8 (et al.) chars in the
JarUrlConnection has to be made explicit, otherwise
Wdinows apparently does not pick the default(?).
Fixes gh-711, Fixes gh-753
Andy Wilkinson
Phillip Webb
Dave Syer
Michael Cramer
Eric Dahl
Phillip Webb
Andy Wilkinson
Dave Syer
Artem Bilan