无法更改 spring 应用程序中的语言

Question

我正在尝试使用 <spring:message> 标签更改语言。但它没有被识别。

language.jsp

<%@ taglib prefix="spring"
           uri="http://www.springframework.org/tags" %>
<html>
    <body>
        <h1><spring:message code="home.title" /></h1>
        <p><spring:message code="home.intro" /></p>
<p>
    <a href="?lang=en">English</a> |
    <a href="?lang=fr">French</a>
</p>
</body>
</html>

AppConfig.java

  @Configuration
@EnableWebMvc
@ComponentScan(basePackages = {"com.dilini.controller", "com.dilini.service"})
@Import({DatabaseConfig.class, SecurityConfig.class})
public class AppConfig extends WebMvcConfigurerAdapter {


    @Bean
    public ViewResolver jspViewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setViewClass(JstlView.class);
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Bean
    public HandlerInterceptor performanceInterceptor() {
        PerformanceInterceptor interceptor;
        interceptor = new PerformanceInterceptor();
        return interceptor;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(performanceInterceptor()).addPathPatterns("/user/*");
        registry.addInterceptor(localeChangeInterceptor());
    }

    @Bean
    public MessageSource messageSource() {
        ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
        messageSource.setBasename("classpath:/messages");
        messageSource.setUseCodeAsDefaultMessage(true);
        return messageSource;
    }

    @Bean
    public HandlerInterceptor localeChangeInterceptor() {
        LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();
        interceptor.setParamName("lang");
        return interceptor;
    }

    @Bean
    public LocaleResolver localeResolver() {
        CookieLocaleResolver localeResolver = new CookieLocaleResolver();
        localeResolver.setDefaultLocale(new Locale("en"));
        return localeResolver;
    }
}

src/main/resources/messages/en.properties

home.title=Home
home.intro= this is my magnificent intro

法国人也一样。

src/main/resources/messages/fr.properties

home.title=Accueil
home.intro=Splendide page d'accueil,

我是否需要为此功能添加其他依赖项？还是代码有问题？

请帮忙

Answer 1

在您的 appconfig 中，我没有看到拦截器注册。您只是简单地定义了它，但从未注册过它。您应该重写 addInterceptors 方法

@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(localeChangeInterceptor());
}

尝试添加并检查是否有效

Answer 2

在您的 src/main/resources/messages/ 中创建两个 i18 文件（en 和 fr 命名如下）：

在您的 MessageSource 中，您只需将 basename 设置为 messages => messageSource.setBasename("classpath:/messages");

因此您的本地文件应命名为 messages_[local].properties（spring 将搜索在 as .setBasename() 中设置的本地名称文件）

如下

messages_en.properties 包含：

home.title=Home
home.intro= this is my magnificent intro

和messages_fr.properties

home.title=Accueil
home.intro= ceci est ma magnifique intro

它应该有效

Answer 3

试试下面的代码

@Bean(name = "localeResolver")
    public LocaleResolver getLocaleResolver()  {
        CookieLocaleResolver resolver= new CookieLocaleResolver();
        resolver.setCookieDomain("myAppLocaleCookie");
        resolver.setCookieMaxAge(600); 
        return resolver;
    } 

    @Bean(name = "messageSource")
    public MessageSource messageSource()  {
        ReloadableResourceBundleMessageSource messageResource= new ReloadableResourceBundleMessageSource();         
        // For example: i18n/messages_en.properties
        // For example: i18n/messages_fr.properties
        messageResource.setBasename("classpath:i18n/messages");
        messageResource.setDefaultEncoding("UTF-8");
        return messageResource;
    }
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        LocaleChangeInterceptor localeInterceptor = new LocaleChangeInterceptor();
        localeInterceptor.setParamName("lang");
        registry.addInterceptor(localeInterceptor).addPathPatterns("/*");
    }

注意：messages_en.properties 和 messages_fr.properties 应该出现在 src/main/resources/i18n

中

无法更改 spring 应用程序中的语言

cannot change language in spring application

java

spring

jsp

spring-messaging