目录
* Comma-separated list of basenames, each following the ResourceBundle convention.
* Essentially a fully-qualified classpath location. If it doesn't contain a package
* qualifier (such as "org.mypackage"), it will be resolved from the classpath root.
*/
private String basename = "messages";
/**
* Message bundles encoding.
*/
private Charset encoding = Charset.forName("UTF-8");
/**
* Loaded resource bundle files cache expiration, in seconds. When set to -1, bundles
* are cached forever.
*/
private int cacheSeconds = -1;
/**
* Set whether to fall back to the system Locale if no files for a specific Locale
* have been found. if this is turned off, the only fallback will be the default file
* (e.g. "messages.properties" for basename "messages").
*/
private boolean fallbackToSystemLocale = true;
/**
* Set whether to always apply the MessageFormat rules, parsing even messages without
* arguments.
*/
private boolean alwaysUseMessageFormat = false;
@Bean
public MessageSource messageSource() {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
if (StringUtils.hasText(this.basename)) {
messageSource.setBasenames(StringUtils.commaDelimitedListToStringArray(
StringUtils.trimAllWhitespace(this.basename)));
}
if (this.encoding != null) {
messageSource.setDefaultEncoding(this.encoding.name());
}
messageSource.setFallbackToSystemLocale(this.fallbackToSystemLocale);
messageSource.setCacheSeconds(this.cacheSeconds);
messageSource.setAlwaysUseMessageFormat(this.alwaysUseMessageFormat);
return messageSource;
}
public String getBasename() {
return this.basename;
}
public void setBasename(String basename) {
this.basename = basename;
}
public Charset getEncoding() {
return this.encoding;
}
public void setEncoding(Charset encoding) {
this.encoding = encoding;
}
public int getCacheSeconds() {
return this.cacheSeconds;
}
public void setCacheSeconds(int cacheSeconds) {
this.cacheSeconds = cacheSeconds;
}
public boolean isFallbackToSystemLocale() {
return this.fallbackToSystemLocale;
}
public void setFallbackToSystemLocale(boolean fallbackToSystemLocale) {
this.fallbackToSystemLocale = fallbackToSystemLocale;
}
public boolean isAlwaysUseMessageFormat() {
return this.alwaysUseMessageFormat;
}
public void setAlwaysUseMessageFormat(boolean alwaysUseMessageFormat) {
this.alwaysUseMessageFormat = alwaysUseMessageFormat;
}
protected static class ResourceBundleCondition extends SpringBootCondition {
private static ConcurrentReferenceHashMap<String, ConditionOutcome> cache = new ConcurrentReferenceHashMap<String, ConditionOutcome>();
@Override
public ConditionOutcome getMatchOutcome(ConditionContext context,
AnnotatedTypeMetadata metadata) {
String basename = context.getEnvironment()
.getProperty("spring.messages.basename", "messages");
ConditionOutcome outcome = cache.get(basename);
if (outcome == null) {
outcome = getMatchOutcomeForBasename(context, basename);
cache.put(basename, outcome);
}
return outcome;
}
private ConditionOutcome getMatchOutcomeForBasename(ConditionContext context,
String basename) {
ConditionMessage.Builder message = ConditionMessage
.forCondition("ResourceBundle");
for (String name : StringUtils.commaDelimitedListToStringArray(
StringUtils.trimAllWhitespace(basename))) {
for (Resource resource : getResources(context.getClassLoader(), name)) {
if (resource.exists()) {
return ConditionOutcome
.match(message.found("bundle").items(resource));
}
}
}
return ConditionOutcome.noMatch(
message.didNotFind("bundle with basename " + basename).atAll());
}
private Resource[] getResources(ClassLoader classLoader, String name) {
try {
return new PathMatchingResourcePatternResolver(classLoader)
.getResources("classpath*:" + name + ".properties");
}
catch (Exception ex) {
return NO_RESOURCES;
}
}
}
}
从上面的MessageSource自动配置可以看出，可以通过spring.message.basename指定要配置国际化文件位置，默认值是“message”。spring boot默认就支持国际化的，默认会去resouces目录下寻找message.properties文件。
这里就不进行过多关于国际化相关信息的介绍了，肯定少不了区域解析www.cppcns.com器。springboot国际化相关知识请参考：Spring Boot国际化（i18n）
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