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Add loader.args to PropertiesLauncher

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Also new section of README for propery keys used by the
launcher.
This commit is contained in:
Dave Syer
2014-01-27 11:48:19 +00:00
parent 8d05cd1fb6
commit 91998d5942
3 changed files with 67 additions and 4 deletions
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33
spring-boot-tools/spring-boot-loader/README.md
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@@ -158,6 +158,39 @@ $ unzip -q myapp.jar
$ java org.springframework.boot.loader.JarLauncher
```
## PropertiesLauncher Features
`PropertiesLauncher` has a few special features that can be enabled
with external properties (System properties, environment variables,
manifest entries or `application.properties`).
| Key | Purpose | Typical value |
|------------|---------|---------------|
|loader.path |Classpath (colon-separated) |lib:${HOME}/app/lib|
|loader.home |Location of additional properties file (defaults to `${user.dir}`) |file:///opt/app|
|loader.args |Default arguments for the main method (space separated) ||
|loader.main |Name of main class to launch | com.app.Application |
|loader.config.name|Name of properties file (default "application") | loader|
|loader.config.location|Path to properties file (default "application/.properties") | classpath:loader.properties|
|loader.system|Boolean flag to indicate that all properties should be added to System properties (default false)|true|
Manifest entry keys are formed by capitalizing intial letters of words
and changing the separator to '-' from '.' (e.g. "Loader-Path"). The
exception is "loader.main" which is looked up as "Start-Class" in the
manifest for compatibility with `JarLauncher`).
Environment variables can be capitalized with underscore separators
instead of periods.
* `loader.home` is the directory location of an additional properties
file (overriding the default) as long as `loader.config.location` is
not specified
* `loader.path` can contain directories (scanned recursively for jar
and zip files), archive paths, or wildcard patterns (for the default
JVM behaviour)
* Placeholder replacement is done from System and environment
variables plus the properties file itself on all values before use.
## Restrictions
There are a number of restrictions that you need to consider when working with a Spring
Boot Loader packaged application.