這篇文章主要講解了Springmvc如何實(shí)現(xiàn)國(guó)際化自動(dòng)配置，內(nèi)容清晰明了，對(duì)此有興趣的小伙伴可以學(xué)習(xí)一下，相信大家閱讀完之后會(huì)有幫助。
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在 springmvc 中通過(guò) LocalResover 獲取區(qū)域信息對(duì)象 Local（對(duì)語(yǔ)言信息、國(guó)家代碼等的封裝），進(jìn)行國(guó)際化配置，在 springboot 為我們提供了默認(rèn)的區(qū)域信息解析器
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@Configuration(
proxyBeanMethods = false
)
@ConditionalOnWebApplication(
type = Type.SERVLET
)
@ConditionalOnClass({Servlet.class, DispatcherServlet.class, WebMvcConfigurer.class})
@ConditionalOnMissingBean({WebMvcConfigurationSupport.class})
@AutoConfigureOrder(-2147483638)
@AutoConfigureAfter({DispatcherServletAutoConfiguration.class, TaskExecutionAutoConfiguration.class, ValidationAutoConfiguration.class})
public class WebMvcAutoConfiguration {
public static final String DEFAULT_PREFIX = "";
public static final String DEFAULT_SUFFIX = "";
private static final String[] SERVLET_LOCATIONS = new String[]{"/"};
@Bean
@ConditionalOnMissingBean //容器中沒(méi)有 LocaleResolver 時(shí)
@ConditionalOnProperty(
prefix = "spring.mvc",
name = {"locale"}
)
public LocaleResolver localeResolver() { //如果屬性中指定用固定的就用固定的 FixedLocaleResolver 區(qū)域化信息解析器
if (this.mvcProperties.getLocaleResolver() == org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties.LocaleResolver.FIXED) {
return new FixedLocaleResolver(this.mvcProperties.getLocale());
} else { //否則使用 AcceptHeaderLocaleResolver 區(qū)域化信息解析器
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
localeResolver.setDefaultLocale(this.mvcProperties.getLocale());
return localeResolver;
}
}AcceptHeaderLocaleResolver 在 request 請(qǐng)求頭中獲取到區(qū)域信息
public class AcceptHeaderLocaleResolver implements LocaleResolver {
private final List supportedLocales = new ArrayList(4);
public Locale resolveLocale(HttpServletRequest request) {
Locale defaultLocale = this.getDefaultLocale();
if (defaultLocale != null && request.getHeader("Accept-Language") == null) {
return defaultLocale;
} else {
Locale requestLocale = request.getLocale();
List supportedLocales = this.getSupportedLocales();
if (!supportedLocales.isEmpty() && !supportedLocales.contains(requestLocale)) {
Locale supportedLocale = this.findSupportedLocale(request, supportedLocales);
if (supportedLocale != null) {
return supportedLocale;
} else {
return defaultLocale != null ? defaultLocale : requestLocale;
}
} else {
return requestLocale;
}
}
} 默認(rèn)就是更具請(qǐng)求頭帶來(lái)的區(qū)域信息獲取 Local 進(jìn)行國(guó)際化
我們可以通過(guò)定義自己的區(qū)域化解析器生成區(qū)域化信息
public class MyLocaleResolver implements LocaleResolver {
@Override
public Locale resolveLocale(HttpServletRequest request) {
String l = request.getParameter("l");
Locale locale = Locale.getDefault();
if(!StringUtils.isEmpty(l)){
String[] split = l.split("_");
locale = new Locale(split[0],split[1]);
}
return locale;
}
@Override
public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
}
}
@Configuration
public class MyMvcConfig extends WebMvcConfigurerAdapter {
@Bean
public LocaleResolver localeResolver(){
return new MyLocaleResolver();
}
}量變引起質(zhì)變，這就是我所理解的因果。
看完上述內(nèi)容，是不是對(duì)Springmvc如何實(shí)現(xiàn)國(guó)際化自動(dòng)配置有進(jìn)一步的了解，如果還想學(xué)習(xí)更多內(nèi)容，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。
