io.zhudy.duic.config.util

类 PropertyPlaceholderHelper

java.lang.Object

io.zhudy.duic.config.util.PropertyPlaceholderHelper

public class PropertyPlaceholderHelper
extends java.lang.Object

Utility class for working with Strings that have placeholder values in them. A placeholder takes the form ${name}. Using PropertyPlaceholderHelper these placeholders can be substituted for user-supplied values.

Values for substitution can be supplied using a Properties instance or using a PropertyPlaceholderHelper.PlaceholderResolver.

从以下版本开始:

3.0

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	PropertyPlaceholderHelper.PlaceholderResolver Strategy interface used to resolve replacement values for placeholders contained in Strings.

构造器概要

构造器

构造器和说明
PropertyPlaceholderHelper(java.lang.String placeholderPrefix, java.lang.String placeholderSuffix) Creates a new PropertyPlaceholderHelper that uses the supplied prefix and suffix.
PropertyPlaceholderHelper(java.lang.String placeholderPrefix, java.lang.String placeholderSuffix, java.lang.String valueSeparator, boolean ignoreUnresolvablePlaceholders) Creates a new PropertyPlaceholderHelper that uses the supplied prefix and suffix.

方法概要

限定符和类型	方法和说明
protected java.lang.String	parseStringValue(java.lang.String strVal, PropertyPlaceholderHelper.PlaceholderResolver placeholderResolver, java.util.Set<java.lang.String> visitedPlaceholders)
java.lang.String	replacePlaceholders(java.lang.String value, java.util.Properties properties) Replaces all placeholders of format ${name} with the corresponding property from the supplied Properties.
java.lang.String	replacePlaceholders(java.lang.String value, PropertyPlaceholderHelper.PlaceholderResolver placeholderResolver) Replaces all placeholders of format ${name} with the value returned from the supplied PropertyPlaceholderHelper.PlaceholderResolver.

从类继承的方法 java.lang.Object

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

构造器详细资料

PropertyPlaceholderHelper

public PropertyPlaceholderHelper(java.lang.String placeholderPrefix,
                                 java.lang.String placeholderSuffix)

Creates a new PropertyPlaceholderHelper that uses the supplied prefix and suffix. Unresolvable placeholders are ignored.

参数:

placeholderPrefix - the prefix that denotes the start of a placeholder.

placeholderSuffix - the suffix that denotes the end of a placeholder.

PropertyPlaceholderHelper

public PropertyPlaceholderHelper(java.lang.String placeholderPrefix,
                                 java.lang.String placeholderSuffix,
                                 java.lang.String valueSeparator,
                                 boolean ignoreUnresolvablePlaceholders)

Creates a new PropertyPlaceholderHelper that uses the supplied prefix and suffix.

参数:

placeholderPrefix - the prefix that denotes the start of a placeholder

placeholderSuffix - the suffix that denotes the end of a placeholder

valueSeparator - the separating character between the placeholder variable and the associated default value, if any

ignoreUnresolvablePlaceholders - indicates whether unresolvable placeholders should be ignored (true) or cause an exception (false).

方法详细资料

replacePlaceholders

public java.lang.String replacePlaceholders(java.lang.String value,
                                            java.util.Properties properties)

Replaces all placeholders of format ${name} with the corresponding property from the supplied Properties.

参数:

value - the value containing the placeholders to be replaced.

properties - the Properties to use for replacement.

返回:

the supplied value with placeholders replaced inline.

replacePlaceholders

public java.lang.String replacePlaceholders(java.lang.String value,
                                            PropertyPlaceholderHelper.PlaceholderResolver placeholderResolver)

Replaces all placeholders of format ${name} with the value returned from the supplied PropertyPlaceholderHelper.PlaceholderResolver.

参数:

value - the value containing the placeholders to be replaced.

placeholderResolver - the PlaceholderResolver to use for replacement.

返回:

the supplied value with placeholders replaced inline.

parseStringValue

protected java.lang.String parseStringValue(java.lang.String strVal,
                                            PropertyPlaceholderHelper.PlaceholderResolver placeholderResolver,
                                            java.util.Set<java.lang.String> visitedPlaceholders)