下面列出了怎么用org.springframework.util.PropertyPlaceholderHelper的API类实例代码及写法，或者点击链接到github查看源代码。
private static Multimap<String, String> assembleConfiguration(Properties configurationProperties,
Properties overridingProperties)
{
String profiles = getCompetingConfigurationPropertyValue(configurationProperties, overridingProperties,
Pair.of(PROFILE, PROFILES));
String environments = getConfigurationPropertyValue(configurationProperties, overridingProperties,
ENVIRONMENTS);
String suite = getConfigurationPropertyValue(configurationProperties, overridingProperties, SUITE);
Properties mergedProperties = new Properties();
mergedProperties.putAll(configurationProperties);
mergedProperties.putAll(overridingProperties);
PropertyPlaceholderHelper propertyPlaceholderHelper = createPropertyPlaceholderHelper(true);
profiles = propertyPlaceholderHelper.replacePlaceholders(profiles, mergedProperties::getProperty);
environments = propertyPlaceholderHelper.replacePlaceholders(environments, mergedProperties::getProperty);
suite = propertyPlaceholderHelper.replacePlaceholders(suite, mergedProperties::getProperty);
Multimap<String, String> configuration = LinkedHashMultimap.create();
configuration.putAll(PROFILE, asPaths(profiles));
configuration.putAll(ENVIRONMENT, asPaths(environments));
configuration.put(SUITE, suite);
return configuration;
}
private MessageTemplatePlaceholderResolver getPropertyResolver(@NonNull MessageTemplateCompiler compiler) {
Set<PropertyPlaceholderHelper.PlaceholderResolver> resolvers = new HashSet<>();
resolvers.add(compiler.getVariables());
resolvers.addAll(compiler.getResolverSet());
Locale locale = null;
if (compiler.getGuild() != null) {
locale = contextService.getLocale(compiler.getGuild());
resolvers.add(GuildPlaceholderResolver.of(compiler.getGuild(), locale, applicationContext, "server"));
}
if (compiler.getMember() != null) {
if (locale == null) {
locale = contextService.getLocale(compiler.getMember().getGuild());
}
resolvers.add(MemberPlaceholderResolver.of(compiler.getMember(), locale, applicationContext, "member"));
}
TextChannel channel = getTargetChannel(compiler);
if (channel != null) {
if (locale == null) {
locale = contextService.getLocale(channel.getGuild());
}
resolvers.add(ChannelPlaceholderResolver.of(channel, locale, applicationContext, "channel"));
}
return new MessageTemplatePlaceholderResolver(resolvers);
}
public PropertySourcesPlaceholdersResolver(Iterable<PropertySource<?>> sources,
PropertyPlaceholderHelper helper) {
this.sources = sources;
this.helper = (helper != null) ? helper
: new PropertyPlaceholderHelper(SystemPropertyUtils.PLACEHOLDER_PREFIX,
SystemPropertyUtils.PLACEHOLDER_SUFFIX,
SystemPropertyUtils.VALUE_SEPARATOR, true);
}
private String doResolvePlaceholders(String text, PropertyPlaceholderHelper helper) {
return helper.replacePlaceholders(text, new PropertyPlaceholderHelper.PlaceholderResolver() {
@Override
public String resolvePlaceholder(String placeholderName) {
return getPropertyAsRawString(placeholderName);
}
});
}
@Override
public String resolvePlaceholder(String placeholderName) {
return values.computeIfAbsent(placeholderName, p -> {
for (PropertyPlaceholderHelper.PlaceholderResolver resolver : resolvers) {
String value = resolver.resolvePlaceholder(p);
if (value != null) {
return value;
}
}
return null;
});
}
private String doResolvePlaceholders(String text, PropertyPlaceholderHelper helper) {
return helper.replacePlaceholders(text, new PropertyPlaceholderHelper.PlaceholderResolver() {
@Override
public String resolvePlaceholder(String placeholderName) {
return getPropertyAsRawString(placeholderName);
}
});
}
public StaticStringValueResolver(final Map<String, String> values) {
this.helper = new PropertyPlaceholderHelper("${", "}", ":", false);
this.resolver = new PlaceholderResolver() {
@Override
public String resolvePlaceholder(String placeholderName) {
return values.get(placeholderName);
}
};
}
/**
* {@inheritDoc}
*/
@Override
public void afterPropertiesSet()
{
PropertyCheck.mandatory(this, "propertiesSource", this.propertiesSource);
PropertyCheck.mandatory(this, "rootStoreProxyName", this.rootStoreProxyName);
this.placeholderHelper = new PropertyPlaceholderHelper(this.placeholderPrefix, this.placeholderSuffix, this.valueSeparator, true);
}
/**
* Load the JSON template and perform string substitution on the ${...} tokens
* @param is
* @return
* @throws IOException
*/
@SuppressWarnings("unchecked")
Map<String, Object> loadJsonFile(InputStream is, Properties sliProps) throws IOException {
StringWriter writer = new StringWriter();
IOUtils.copy(is, writer);
String template = writer.toString();
PropertyPlaceholderHelper helper = new PropertyPlaceholderHelper("${", "}");
template = helper.replacePlaceholders(template, sliProps);
return (Map<String, Object>) JSON.parse(template);
}
public static ConfigurationResolver getInstance() throws IOException
{
if (instance != null)
{
return instance;
}
PropertiesLoader propertiesLoader = new PropertiesLoader(BeanFactory.getResourcePatternResolver());
Properties configurationProperties = propertiesLoader.loadFromSingleResource("configuration.properties");
Properties overridingProperties = propertiesLoader.loadFromOptionalResource("overriding.properties");
Properties properties = new Properties();
properties.putAll(configurationProperties);
properties.putAll(propertiesLoader.loadFromResourceTreeRecursively("defaults"));
Multimap<String, String> configuration = assembleConfiguration(configurationProperties, overridingProperties);
for (Entry<String, String> configurationEntry : configuration.entries())
{
properties.putAll(propertiesLoader.loadFromResourceTreeRecursively(configurationEntry.getKey(),
configurationEntry.getValue()));
}
properties.putAll(propertiesLoader.loadFromResourceTreeRecursively(ROOT));
Properties deprecatedProperties = propertiesLoader.loadFromResourceTreeRecursively("deprecated");
DeprecatedPropertiesHandler deprecatedPropertiesHandler = new DeprecatedPropertiesHandler(
deprecatedProperties, PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX);
deprecatedPropertiesHandler.replaceDeprecated(properties);
Properties overridingAndSystemProperties = new Properties();
overridingAndSystemProperties.putAll(overridingProperties);
overridingAndSystemProperties.putAll(System.getenv());
overridingAndSystemProperties.putAll(loadFilteredSystemProperties());
deprecatedPropertiesHandler.replaceDeprecated(overridingAndSystemProperties, properties);
properties.putAll(overridingAndSystemProperties);
resolveSpelExpressions(properties, true);
PropertyPlaceholderHelper propertyPlaceholderHelper = createPropertyPlaceholderHelper(false);
for (Entry<Object, Object> entry : properties.entrySet())
{
String key = (String) entry.getKey();
String value = (String) entry.getValue();
deprecatedPropertiesHandler.warnIfDeprecated(key, value);
entry.setValue(propertyPlaceholderHelper.replacePlaceholders(value, properties::getProperty));
}
deprecatedPropertiesHandler.removeDeprecated(properties);
resolveSpelExpressions(properties, false);
processSystemProperties(properties);
instance = new ConfigurationResolver(properties);
return instance;
}
private static PropertyPlaceholderHelper createPropertyPlaceholderHelper(boolean ignoreUnresolvablePlaceholders)
{
return new PropertyPlaceholderHelper(PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX, PLACEHOLDER_VALUE_SEPARATOR,
ignoreUnresolvablePlaceholders);
}
private PropertyPlaceholderHelper createPlaceholderHelper(boolean ignoreUnresolvablePlaceholders) {
return new PropertyPlaceholderHelper(this.placeholderPrefix, this.placeholderSuffix,
this.valueSeparator, ignoreUnresolvablePlaceholders);
}
private String doResolvePlaceholders(String text, PropertyPlaceholderHelper helper) {
return helper.replacePlaceholders(text, this::getPropertyAsRawString);
}
public StaticStringValueResolver(final Map<String, String> values) {
this.helper = new PropertyPlaceholderHelper("${", "}", ":", false);
this.resolver = values::get;
}
public PlaceholderResolvingStringValueResolver(Properties props) {
this.helper = new PropertyPlaceholderHelper(
placeholderPrefix, placeholderSuffix, valueSeparator, ignoreUnresolvablePlaceholders);
this.resolver = new PropertyPlaceholderConfigurerResolver(props);
}
/**
* 将当前内容指定前缀部分绑定到指定对象并用环境变量中的属性替换占位符, 例: 当前内容有属性 zkServers: ${zookeeper.servers}
* 在envProperties中有属性 zookeeper.servers:
* 192.168.0.1:2181,192.168.0.1:2181,192.168.0.1:2181 则当前内容 zkServers 会被替换为
* zkServers: 192.168.0.1:2181,192.168.0.1:2181,192.168.0.1:2181 注: 假设绑定的类中
* zkServers 属性是 List<String> 对象, 则会自动映射成List
*
* @param prefix 指定前缀
* @param content yml内容
* @param clazz 指定对象类型
* @param charset yml内容编码格式
* @return 对象
*/
public static <T> T bindYmlToObj(String prefix, String content, Class<T> clazz, String charset,
Properties baseProperties) {
try {
byte[] contentBytes;
if (charset == null) {
contentBytes = content.getBytes("UTF-8");
} else {
contentBytes = content.getBytes(charset);
}
YamlPropertySourceLoader propertySourceLoader = new YamlPropertySourceLoader();
Resource configResource = new ByteArrayResource(contentBytes);
PropertySource<?> propertySource = propertySourceLoader.load("manualBindConfig", configResource, null);
if (propertySource == null) {
return null;
}
Properties properties = new Properties();
Map<String, Object> propertiesRes = new LinkedHashMap<>();
if (!StringUtils.isEmpty(prefix) && !prefix.endsWith(".")) {
prefix = prefix + ".";
}
properties.putAll((Map<?, ?>) propertySource.getSource());
if (baseProperties != null) {
baseProperties.putAll(properties);
properties = baseProperties;
}
for (Map.Entry<?, ?> entry : ((Map<?, ?>) propertySource.getSource()).entrySet()) {
String key = (String) entry.getKey();
Object value = entry.getValue();
if (prefix != null) {
if (key != null && key.startsWith(prefix)) {
key = key.substring(prefix.length());
} else {
continue;
}
}
if (value instanceof String && ((String) value).contains("${") && ((String) value).contains("}")) {
PropertyPlaceholderHelper propertyPlaceholderHelper = new PropertyPlaceholderHelper("${", "}");
value = propertyPlaceholderHelper.replacePlaceholders((String) value, properties);
}
propertiesRes.put(key, value);
}
if (propertiesRes.isEmpty()) {
return null;
}
propertySource = new MapPropertySource(propertySource.getName(), propertiesRes);
T target = clazz.newInstance();
MutablePropertySources propertySources = new MutablePropertySources();
propertySources.addFirst(propertySource);
PropertiesConfigurationFactory<Object> factory = new PropertiesConfigurationFactory<Object>(target);
factory.setPropertySources(propertySources);
factory.setIgnoreInvalidFields(true);
factory.setIgnoreUnknownFields(true);
factory.bindPropertiesToTarget();
return target;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private PropertyPlaceholderHelper createPlaceholderHelper(boolean ignoreUnresolvablePlaceholders) {
return new PropertyPlaceholderHelper(this.placeholderPrefix, this.placeholderSuffix,
this.valueSeparator, ignoreUnresolvablePlaceholders);
}
private String doResolvePlaceholders(String text, PropertyPlaceholderHelper helper) {
return helper.replacePlaceholders(text, this::getPropertyAsRawString);
}
public StaticStringValueResolver(final Map<String, String> values) {
this.helper = new PropertyPlaceholderHelper("${", "}", ":", false);
this.resolver = values::get;
}
public PlaceholderResolvingStringValueResolver(Properties props) {
this.helper = new PropertyPlaceholderHelper(
placeholderPrefix, placeholderSuffix, valueSeparator, ignoreUnresolvablePlaceholders);
this.resolver = new PropertyPlaceholderConfigurerResolver(props);
}
public PlaceholderResolvingStringValueResolver(Properties props) {
this.helper = new PropertyPlaceholderHelper(
placeholderPrefix, placeholderSuffix, valueSeparator, ignoreUnresolvablePlaceholders);
this.resolver = new PropertyPlaceholderConfigurerResolver(props);
}
private PropertyPlaceholderHelper createPlaceholderHelper(boolean ignoreUnresolvablePlaceholders) {
return new PropertyPlaceholderHelper(this.placeholderPrefix, this.placeholderSuffix,
this.valueSeparator, ignoreUnresolvablePlaceholders);
}
public MessageTemplateCompiler withResolver(PropertyPlaceholderHelper.PlaceholderResolver resolver) {
this.resolverSet.add(resolver);
return this;
}
public MessageTemplatePlaceholderResolver(PropertyPlaceholderHelper.PlaceholderResolver... resolvers) {
this(resolvers != null ? Arrays.asList(resolvers) : Collections.emptySet());
}
public MessageTemplatePlaceholderResolver(Collection<? extends PropertyPlaceholderHelper.PlaceholderResolver> resolvers) {
this.resolvers = Set.copyOf(resolvers);
}
public PlaceholderResolvingStringValueResolver(Properties props) {
this.helper = new PropertyPlaceholderHelper(
placeholderPrefix, placeholderSuffix, valueSeparator, ignoreUnresolvablePlaceholders);
this.resolver = new PropertyPlaceholderConfigurerResolver(props);
}
private PropertyPlaceholderHelper createPlaceholderHelper(boolean ignoreUnresolvablePlaceholders) {
return new PropertyPlaceholderHelper(this.placeholderPrefix, this.placeholderSuffix,
this.valueSeparator, ignoreUnresolvablePlaceholders);
}
public PlaceholderResolvingStringValueResolver(Properties props) {
this.helper = new PropertyPlaceholderHelper(
placeholderPrefix, placeholderSuffix, valueSeparator, ignoreUnresolvablePlaceholders);
this.resolver = new PropertyPlaceholderConfigurerResolver(props);
}
private String replacePlaceholders(
PropertyPlaceholderHelper.PlaceholderResolver resolver, String input) {
return this.propertyPlaceholderHelper.replacePlaceholders(input, resolver);
}
/**
* 将当前内容指定前缀部分绑定到指定对象并用环境变量中的属性替换占位符, 例: 当前内容有属性 zkServers: ${zookeeper.servers}
* 在envProperties中有属性 zookeeper.servers:
* 192.168.0.1:2181,192.168.0.1:2181,192.168.0.1:2181 则当前内容 zkServers 会被替换为
* zkServers: 192.168.0.1:2181,192.168.0.1:2181,192.168.0.1:2181 注: 假设绑定的类中
* zkServers 属性是 List<String> 对象, 则会自动映射成List
*
* @param prefix 指定前缀
* @param content yml内容
* @param clazz 指定对象类型
* @param charset yml内容编码格式
* @return 对象
*/
public static <T> T bindYmlToObj(String prefix, String content, Class<T> clazz, String charset,
Properties baseProperties) {
try {
byte[] contentBytes;
if (charset == null) {
contentBytes = content.getBytes("UTF-8");
} else {
contentBytes = content.getBytes(charset);
}
YamlPropertySourceLoader propertySourceLoader = new YamlPropertySourceLoader();
Resource configResource = new ByteArrayResource(contentBytes);
PropertySource<?> propertySource = propertySourceLoader.load("manualBindConfig", configResource, null);
if (propertySource == null) {
return null;
}
Properties properties = new Properties();
Map<String, Object> propertiesRes = new LinkedHashMap<>();
if (!StringUtils.isEmpty(prefix) && !prefix.endsWith(".")) {
prefix = prefix + ".";
}
properties.putAll((Map<?, ?>) propertySource.getSource());
if (baseProperties != null) {
baseProperties.putAll(properties);
properties = baseProperties;
}
for (Map.Entry<?, ?> entry : ((Map<?, ?>) propertySource.getSource()).entrySet()) {
String key = (String) entry.getKey();
Object value = entry.getValue();
if (prefix != null) {
if (key != null && key.startsWith(prefix)) {
key = key.substring(prefix.length());
} else {
continue;
}
}
if (value instanceof String && ((String) value).contains("${") && ((String) value).contains("}")) {
PropertyPlaceholderHelper propertyPlaceholderHelper = new PropertyPlaceholderHelper("${", "}");
value = propertyPlaceholderHelper.replacePlaceholders((String) value, properties);
}
propertiesRes.put(key, value);
}
if (propertiesRes.isEmpty()) {
return null;
}
propertySource = new MapPropertySource(propertySource.getName(), propertiesRes);
T target = clazz.newInstance();
MutablePropertySources propertySources = new MutablePropertySources();
propertySources.addFirst(propertySource);
PropertiesConfigurationFactory<Object> factory = new PropertiesConfigurationFactory<Object>(target);
factory.setPropertySources(propertySources);
factory.setIgnoreInvalidFields(true);
factory.setIgnoreUnknownFields(true);
factory.bindPropertiesToTarget();
return target;
} catch (Exception e) {
throw new RuntimeException(e);
}
}