org.springframework.boot.loader.tools

Class Repackager

java.lang.Object

org.springframework.boot.loader.tools.Repackager

public class Repackager
extends Object

Utility class that can be used to repackage an archive so that it can be executed using 'java -jar'.

Author:

Phillip Webb, Andy Wilkinson, Stephane Nicoll

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Repackager.MainClassTimeoutWarningListener Callback interface used to present a warning when finding the main class takes too long.

Constructor Summary

Constructors

Constructor and Description
Repackager(File source)
Repackager(File source, LayoutFactory layoutFactory)

Method Summary

Modifier and Type	Method and Description
void	addMainClassTimeoutWarningListener(Repackager.MainClassTimeoutWarningListener listener) Add a listener that will be triggered to display a warning if searching for the main class takes too long.
protected String	findMainMethod(JarFile source)
File	getBackupFile() Return the File to use to backup the original source.
void	repackage(File destination, Libraries libraries) Repackage to the given destination so that it can be launched using ' java -jar'.
void	repackage(File destination, Libraries libraries, LaunchScript launchScript) Repackage to the given destination so that it can be launched using ' java -jar'.
void	repackage(Libraries libraries) Repackage the source file so that it can be run using 'java -jar'.
void	setBackupSource(boolean backupSource) Sets if source files should be backed up when they would be overwritten.
void	setLayout(Layout layout) Sets the layout to use for the jar.
void	setLayoutFactory(LayoutFactory layoutFactory) Sets the layout factory for the jar.
void	setMainClass(String mainClass) Sets the main class that should be run.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Repackager

public Repackager(File source)

Repackager

public Repackager(File source,
                  LayoutFactory layoutFactory)

Method Detail

addMainClassTimeoutWarningListener

public void addMainClassTimeoutWarningListener(Repackager.MainClassTimeoutWarningListener listener)

Add a listener that will be triggered to display a warning if searching for the main class takes too long.

Parameters:

listener - the listener to add

setMainClass

public void setMainClass(String mainClass)

Sets the main class that should be run. If not specified the value from the MANIFEST will be used, or if no manifest entry is found the archive will be searched for a suitable class.

Parameters:

mainClass - the main class name

setBackupSource

public void setBackupSource(boolean backupSource)

Sets if source files should be backed up when they would be overwritten.

Parameters:

backupSource - if source files should be backed up

setLayout

public void setLayout(Layout layout)

Sets the layout to use for the jar. Defaults to Layouts.forFile(File).

Parameters:

layout - the layout

setLayoutFactory

public void setLayoutFactory(LayoutFactory layoutFactory)

Sets the layout factory for the jar. The factory can be used when no specific layout is specified.

Parameters:

layoutFactory - the layout factory to set

repackage

public void repackage(Libraries libraries)
               throws IOException

Repackage the source file so that it can be run using 'java -jar'.

Parameters:

libraries - the libraries required to run the archive

Throws:

IOException - if the file cannot be repackaged

repackage

public void repackage(File destination,
                      Libraries libraries)
               throws IOException

Repackage to the given destination so that it can be launched using ' java -jar'.

Parameters:

destination - the destination file (may be the same as the source)

libraries - the libraries required to run the archive

Throws:

IOException - if the file cannot be repackaged

repackage

public void repackage(File destination,
                      Libraries libraries,
                      LaunchScript launchScript)
               throws IOException

Repackage to the given destination so that it can be launched using ' java -jar'.

Parameters:

destination - the destination file (may be the same as the source)

libraries - the libraries required to run the archive

launchScript - an optional launch script prepended to the front of the jar

Throws:

IOException - if the file cannot be repackaged

Since:

1.3.0

getBackupFile

public final File getBackupFile()

Return the File to use to backup the original source.

Returns:

the file to use to backup the original source

findMainMethod

protected String findMainMethod(JarFile source)
                         throws IOException

Throws:

IOException