java.lang.Object
- org.springframework.boot.loader.Launcher
- - org.springframework.boot.loader.PropertiesLauncher

```
public class PropertiesLauncher
extends Launcher
```
Launcher for archives with user-configured classpath and main class via a properties file. This model is often more flexible and more amenable to creating well-behaved OS-level services than a model based on executable jars.
Looks in various places for a properties file to extract loader settings, defaulting to application.properties either on the current classpath or in the current working directory. The name of the properties file can be changed by setting a System property loader.config.name (e.g. -Dloader.config.name=foo will look for foo.properties. If that file doesn't exist then tries loader.config.location (with allowed prefixes classpath: and file: or any valid URL). Once that file is located turns it into Properties and extracts optional values (which can also be provided overridden as System properties in case the file doesn't exist):
- loader.path: a comma-separated list of directories (containing file resources and/or nested archives in *.jar or *.zip or archives) or archives to append to the classpath. BOOT-INF/classes,BOOT-INF/lib in the application archive are always used
- loader.main: the main method to delegate execution to once the class loader is set up. No default, but will fall back to looking for a Start-Class in a MANIFEST.MF, if there is one in ${loader.home}/META-INF.

字段概要

字段
修饰符和类型	字段	说明
`static String`	`ARGS`	Properties key for default command line arguments.
`static String`	`CONFIG_LOCATION`	Properties key for config file location (including optional classpath:, file: or URL prefix).
`static String`	`CONFIG_NAME`	Properties key for name of external configuration file (excluding suffix).
`static String`	`HOME`	Properties key for home directory.
`static String`	`MAIN`	Properties key for main class.
`static String`	`PATH`	Properties key for classpath entries (directories possibly containing jars or jars).
`static String`	`SET_SYSTEM_PROPERTIES`	Properties key for boolean flag (default false) which if set will cause the external configuration properties to be copied to System properties (assuming that is allowed by Java security).

构造器概要
构造器
构造器说明
PropertiesLauncher()

方法概要

所有方法静态方法实例方法具体方法
修饰符和类型	方法	说明
`protected ClassLoader`	`createClassLoader(List<Archive> archives)`	Create a classloader for the specified archives.
`protected String[]`	`getArgs(String... args)`
`protected List<Archive>`	`getClassPathArchives()`	Returns the archives that will be used to construct the class path.
`protected File`	`getHomeDirectory()`
`protected String`	`getMainClass()`	Returns the main class that should be launched.
`static void`	`main(String[] args)`
`static String`	`toCamelCase(CharSequence string)`

从类继承的方法 org.springframework.boot.loader.Launcher
createArchive, createClassLoader, createMainMethodRunner, launch, launch

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - MAIN
```
public static final String MAIN
```
    Properties key for main class. As a manifest entry can also be specified as Start-Class.
    另请参阅:
    常量字段值
  - PATH
```
public static final String PATH
```
    Properties key for classpath entries (directories possibly containing jars or jars). Multiple entries can be specified using a comma-separated list. BOOT-INF/classes,BOOT-INF/lib in the application archive are always used.
    另请参阅:
    常量字段值
  - HOME
```
public static final String HOME
```
    Properties key for home directory. This is the location of external configuration if not on classpath, and also the base path for any relative paths in the loader path. Defaults to current working directory ( ${user.dir}).
    另请参阅:
    常量字段值
  - ARGS
```
public static final String ARGS
```
    Properties key for default command line arguments. These arguments (if present) are prepended to the main method arguments before launching.
    另请参阅:
    常量字段值
  - CONFIG_NAME
```
public static final String CONFIG_NAME
```
    Properties key for name of external configuration file (excluding suffix). Defaults to "application". Ignored if loader config location is provided instead.
    另请参阅:
    常量字段值
  - CONFIG_LOCATION
```
public static final String CONFIG_LOCATION
```
    Properties key for config file location (including optional classpath:, file: or URL prefix).
    另请参阅:
    常量字段值
  - SET_SYSTEM_PROPERTIES
```
public static final String SET_SYSTEM_PROPERTIES
```
    Properties key for boolean flag (default false) which if set will cause the external configuration properties to be copied to System properties (assuming that is allowed by Java security).
    另请参阅:
    常量字段值
- 构造器详细资料
  - PropertiesLauncher
```
public PropertiesLauncher()
```
- 方法详细资料
  - getHomeDirectory
```
protected File getHomeDirectory()
```
  - getArgs
```
protected String[] getArgs(String... args)
                    throws Exception
```
    抛出:
    Exception
  - getMainClass
```
protected String getMainClass()
                       throws Exception
```
    从类复制的说明: Launcher
    Returns the main class that should be launched.
    指定者:
    getMainClass 在类中 Launcher
    返回:
    the name of the main class
    抛出:
    Exception - if the main class cannot be obtained
  - createClassLoader
```
protected ClassLoader createClassLoader(List<Archive> archives)
                                 throws Exception
```
    从类复制的说明: Launcher
    Create a classloader for the specified archives.
    覆盖:
    createClassLoader 在类中 Launcher
    参数:
    archives - the archives
    返回:
    the classloader
    抛出:
    Exception - if the classloader cannot be created
  - getClassPathArchives
```
protected List<Archive> getClassPathArchives()
                                      throws Exception
```
    从类复制的说明: Launcher
    Returns the archives that will be used to construct the class path.
    指定者:
    getClassPathArchives 在类中 Launcher
    返回:
    the class path archives
    抛出:
    Exception - if the class path archives cannot be obtained
  - main
```
public static void main(String[] args)
                 throws Exception
```
    抛出:
    Exception
  - toCamelCase
```
public static String toCamelCase(CharSequence string)
```

类 PropertiesLauncher

字段概要

构造器概要

方法概要

从类继承的方法 org.springframework.boot.loader.Launcher

从类继承的方法 java.lang.Object

字段详细资料

MAIN

PATH

HOME

ARGS

CONFIG_NAME

CONFIG_LOCATION

SET_SYSTEM_PROPERTIES

构造器详细资料

PropertiesLauncher

方法详细资料

getHomeDirectory

getArgs

getMainClass

createClassLoader

getClassPathArchives

main

toCamelCase