public class PropertyPlaceholder extends Object
${name}. Using PropertyPlaceholder these placeholders can be substituted for
user-supplied values.
Values for substitution can be supplied using a Properties instance or using a
PropertyPlaceholder.PlaceholderResolver.| 限定符和类型 | 类和说明 |
|---|---|
static interface |
PropertyPlaceholder.PlaceholderResolver
Strategy interface used to resolve replacement values for placeholders contained in Strings.
|
| 构造器和说明 |
|---|
PropertyPlaceholder(Logger log,
String placeholderPrefix,
String placeholderSuffix)
Creates a new
PropertyPlaceholderHelper that uses the supplied prefix and suffix. |
PropertyPlaceholder(Logger log,
String placeholderPrefix,
String placeholderSuffix,
String valueSeparator,
boolean ignoreUnresolvablePlaceholders)
Creates a new
PropertyPlaceholderHelper that uses the supplied prefix and suffix. |
| 限定符和类型 | 方法和说明 |
|---|---|
protected String |
parseStringValue(String value,
PropertyPlaceholder.PlaceholderResolver placeholderResolver,
Set<String> visitedPlaceholders) |
String |
replacePlaceholders(String value,
Properties properties)
Replaces all placeholders of format
${name} with the corresponding
property from the supplied Properties. |
String |
replacePlaceholders(String value,
PropertyPlaceholder.PlaceholderResolver placeholderResolver)
Replaces all placeholders of format
${name} with the value returned from the supplied PropertyPlaceholder.PlaceholderResolver. |
public PropertyPlaceholder(Logger log, String placeholderPrefix, String placeholderSuffix)
PropertyPlaceholderHelper that uses the supplied prefix and suffix.
Unresolvable placeholders are ignored.placeholderPrefix - the prefix that denotes the start of a placeholderplaceholderSuffix - the suffix that denotes the end of a placeholderpublic PropertyPlaceholder(Logger log, String placeholderPrefix, String placeholderSuffix, String valueSeparator, boolean ignoreUnresolvablePlaceholders)
PropertyPlaceholderHelper that uses the supplied prefix and suffix.placeholderPrefix - the prefix that denotes the start of a placeholderplaceholderSuffix - the suffix that denotes the end of a placeholdervalueSeparator - the separating character between the placeholder variable
and the associated default value, if anyignoreUnresolvablePlaceholders - indicates whether unresolvable placeholders should
be ignored (true) or cause an exception (false)public String replacePlaceholders(String value, Properties properties)
${name} with the corresponding
property from the supplied Properties.value - the value containing the placeholders to be replacedproperties - the Properties to use for replacementpublic String replacePlaceholders(String value, PropertyPlaceholder.PlaceholderResolver placeholderResolver)
${name} with the value returned from the supplied PropertyPlaceholder.PlaceholderResolver.value - the value containing the placeholders to be replaced.placeholderResolver - the PlaceholderResolver to use for replacement.NullPointerException - if value is nullprotected String parseStringValue(String value, PropertyPlaceholder.PlaceholderResolver placeholderResolver, Set<String> visitedPlaceholders)
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