org.skfiy.util

类 SystemPropertyUtils

java.lang.Object

org.skfiy.util.SystemPropertyUtils

public abstract class SystemPropertyUtils
extends Object

Helper class for resolving placeholders in texts. Usually applied to file paths.

A text may contain ${...} placeholders, to be resolved as system properties: e.g. ${user.dir}. Default values can be supplied using the ":" separator between key and value.

从以下版本开始:

1.2.5

作者:

Juergen Hoeller, Rob Harrop, Dave Syer

另请参阅:

PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX, System.getProperty(String)

字段概要

字段

限定符和类型	字段和说明
static String	PLACEHOLDER_PREFIX Prefix for system property placeholders: "${"
static String	PLACEHOLDER_SUFFIX Suffix for system property placeholders: "}"
static String	VALUE_SEPARATOR Value separator for system property placeholders: ":"

构造器概要

构造器

构造器和说明
SystemPropertyUtils()

方法概要

方法

限定符和类型	方法和说明
static String	resolvePlaceholders(String text) Resolve ${...} placeholders in the given text, replacing them with corresponding system property values.
static String	resolvePlaceholders(String text, boolean ignoreUnresolvablePlaceholders) Resolve ${...} placeholders in the given text, replacing them with corresponding system property values.

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

PLACEHOLDER_PREFIX

public static final String PLACEHOLDER_PREFIX

Prefix for system property placeholders: "${"

另请参阅:

常量字段值

PLACEHOLDER_SUFFIX

public static final String PLACEHOLDER_SUFFIX

Suffix for system property placeholders: "}"

另请参阅:

常量字段值

VALUE_SEPARATOR

public static final String VALUE_SEPARATOR

Value separator for system property placeholders: ":"

另请参阅:

常量字段值

构造器详细资料

SystemPropertyUtils

public SystemPropertyUtils()

方法详细资料

resolvePlaceholders

public static String resolvePlaceholders(String text)

Resolve ${...} placeholders in the given text, replacing them with corresponding system property values.

参数:

text - the String to resolve

返回:

the resolved String

抛出:

IllegalArgumentException - if there is an unresolvable placeholder

另请参阅:

PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX

resolvePlaceholders

public static String resolvePlaceholders(String text,
                         boolean ignoreUnresolvablePlaceholders)

Resolve ${...} placeholders in the given text, replacing them with corresponding system property values. Unresolvable placeholders with no default value are ignored and passed through unchanged if the flag is set to true.

参数:

text - the String to resolve

ignoreUnresolvablePlaceholders - flag to determine is unresolved placeholders are ignored

返回:

the resolved String

抛出:

IllegalArgumentException - if there is an unresolvable placeholder and the flag is false

另请参阅:

PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX