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Polish "Make editorial changes to appendix-executable-jar-format.adoc"
Closes gh-10878
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@ -113,9 +113,9 @@ shown in the following example:
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0063 3452 3980
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----
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The preceding example shows how `A.class` can be found in `/BOOT-INF/classes` in `myapp.jar`
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at position `0063`. `B.class` from the nested jar can actually be found in `myapp.jar`
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at position `3452`, and `C.class` is at position `3980`.
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The preceding example shows how `A.class` can be found in `/BOOT-INF/classes` in
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`myapp.jar` at position `0063`. `B.class` from the nested jar can actually be found in
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`myapp.jar` at position `3452`, and `C.class` is at position `3980`.
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Armed with this information, we can load specific nested entries by seeking to
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the appropriate part of the outer jar. We do not need to unpack the archive, and we
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@ -140,16 +140,16 @@ is used as an executable jar's main entry point. It is the actual `Main-Class` i
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file, and it is used to setup an appropriate `URLClassLoader` and ultimately call your
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`main()` method.
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There are three launcher subclasses (`JarLauncher`, `WarLauncher`, and `PropertiesLauncher`).
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Their purpose is to load resources (`.class` files and so on.) from nested jar files or war
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files in directories (as opposed to those explicitly on the classpath). In the case of
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`JarLauncher` and `WarLauncher`, the nested paths are fixed. `JarLauncher` looks in
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`BOOT-INF/lib/`, and `WarLauncher` looks in `WEB-INF/lib/` and `WEB-INF/lib-provided/`.
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You can add extra jars in those locations if you want more. The `PropertiesLauncher`
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looks in `BOOT-INF/lib/` in your application archive by default, but you can add
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additional locations by setting an environment variable called `LOADER_PATH` or `loader.path`
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in `loader.properties` (which is a comma-separated list of directories, archives, or directories
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within archives).
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There are three launcher subclasses (`JarLauncher`, `WarLauncher`, and
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`PropertiesLauncher`). Their purpose is to load resources (`.class` files and so on.) from
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nested jar files or war files in directories (as opposed to those explicitly on the
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classpath). In the case of `JarLauncher` and `WarLauncher`, the nested paths are fixed.
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`JarLauncher` looks in `BOOT-INF/lib/`, and `WarLauncher` looks in `WEB-INF/lib/` and
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`WEB-INF/lib-provided/`. You can add extra jars in those locations if you want more. The
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`PropertiesLauncher` looks in `BOOT-INF/lib/` in your application archive by default, but
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you can add additional locations by setting an environment variable called `LOADER_PATH`
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or `loader.path` in `loader.properties` (which is a comma-separated list of directories,
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archives, or directories within archives).
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@ -206,12 +206,12 @@ properties (System properties, environment variables, manifest entries, or
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|Key |Purpose
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|`loader.path`
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|Comma-separated Classpath, such as `lib,${HOME}/app/lib`. Earlier entries take precedence,
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like a regular `-classpath` on the `javac` command line.
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|Comma-separated Classpath, such as `lib,${HOME}/app/lib`. Earlier entries take
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precedence, like a regular `-classpath` on the `javac` command line.
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|`loader.home`
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|Used to resolve relative paths in `loader.path`. For example, given `loader.path=lib`, then
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`${loader.home}/lib` is a classpath location (along with all jar files in that
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|Used to resolve relative paths in `loader.path`. For example, given `loader.path=lib`,
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then `${loader.home}/lib` is a classpath location (along with all jar files in that
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directory). This property is also used to locate a `loader.properties` file, as in the
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following example `file:///opt/app`
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It defaults to `${user.dir}`.
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@ -278,14 +278,14 @@ The following rules apply to working with `PropertiesLauncher`:
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with that name exists is used.
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* `loader.home` is the directory location of an additional properties file
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(overriding the default) only when `loader.config.location` is not specified.
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* `loader.path` can contain directories (which are scanned recursively for jar and zip files),
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archive paths, a directory within an archive that is scanned for jar files (for
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* `loader.path` can contain directories (which are scanned recursively for jar and zip
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files), archive paths, a directory within an archive that is scanned for jar files (for
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example, `dependencies.jar!/lib`), or wildcard patterns (for the default JVM behavior).
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Archive paths can be relative to `loader.home` or anywhere in the file system with a
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`jar:file:` prefix.
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* `loader.path` (if empty) defaults to `BOOT-INF/lib` (meaning a local directory or a
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nested one if running from an archive). Because of this, `PropertiesLauncher` behaves the
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same as `JarLauncher` when no additional configuration is provided.
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nested one if running from an archive). Because of this, `PropertiesLauncher` behaves
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the same as `JarLauncher` when no additional configuration is provided.
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* `loader.path` can not be used to configure the location of `loader.properties` (the
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classpath used to search for the latter is the JVM classpath when `PropertiesLauncher`
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is launched).
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@ -325,8 +325,8 @@ consider a different logging implementation.
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[[executable-jar-alternatives]]
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=== Alternative Single Jar Solutions
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If the preceding restrictions mean that you cannot use Spring Boot Loader, consider the following
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alternatives:
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If the preceding restrictions mean that you cannot use Spring Boot Loader, consider the
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following alternatives:
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* http://maven.apache.org/plugins/maven-shade-plugin/[Maven Shade Plugin]
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* http://www.jdotsoft.com/JarClassLoader.php[JarClassLoader]
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