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        基于 Spring MVC LocaleChangeInterceptor 注释不起作用

        时间:2024-08-25
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                  本文介绍了基于 Spring MVC LocaleChangeInterceptor 注释不起作用的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  import java.util.Locale;
                  
                  import org.springframework.context.MessageSource;
                  import org.springframework.context.annotation.Bean;
                  import org.springframework.context.annotation.Configuration;
                  import org.springframework.context.support.ReloadableResourceBundleMessageSource;
                  import org.springframework.web.servlet.HandlerMapping;
                  import org.springframework.web.servlet.LocaleResolver;
                  import org.springframework.web.servlet.i18n.CookieLocaleResolver;
                  import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
                  import org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping;
                  
                  @Configuration
                  public class Config {
                      @Bean
                      public LocaleResolver localeResolver() {
                          final CookieLocaleResolver ret = new CookieLocaleResolver();
                          ret.setDefaultLocale(new Locale("en_US"));
                          return ret;
                      }
                  
                      @Bean
                      public MessageSource messageSource() {
                          final ReloadableResourceBundleMessageSource ret = new ReloadableResourceBundleMessageSource();
                          ret.setBasename("classpath:lang");
                          ret.setDefaultEncoding("UTF-8");
                          return ret;
                      }
                  
                      @Bean
                      public HandlerMapping handlerMapping() {
                          final LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();
                          interceptor.setParamName("language");
                  
                          final DefaultAnnotationHandlerMapping ret = new DefaultAnnotationHandlerMapping();
                          ret.setInterceptors(new Object[] { interceptor });
                          return ret;
                      }
                  }
                  

                  以上是我的注解配置.我基本上已经翻译了 this 教程的 XML.

                  The above is my annotation configuration. I've basically translated this tutorial's XML.

                  奇怪的是,当我转到 ...?language=fr 时它不起作用.

                  Strangely it doesn't work when I go to ...?language=fr.

                  但是,以下确实有效(在 app-servlet.xml 中)(注意这里使用的是 locale):

                  However, the following does work (in app-servlet.xml) (notice here it's using locale):

                  <mvc:interceptors>
                      <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
                          <property name="paramName" value="locale" />
                      </bean>
                  </mvc:interceptors>
                  

                  另一个需要注意的重要事情是,当我在上述方法上设置断点时,所有这三个方法,每个断点都会中断,这意味着某人"正在读取这些值.

                  Another important thing to note is that when I put breakpoints on the above methods, all of the three of them, every breakpoint does break, which implies that "someone" is reading the values.

                  那么,为什么我的基于注释的拦截器不起作用?

                  So, why wouldn't my annotation based interceptor doesn't work?

                  推荐答案

                  通过 WebMvcConfigurerAdapter 扩展配置类可能会有所帮助.添加拦截器条目覆盖

                  Extending config class by WebMvcConfigurerAdapter may help. to add interceptor entry override

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

                  方法.还为 LocaleChangeInterceptor

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

                  这篇关于基于 Spring MVC LocaleChangeInterceptor 注释不起作用的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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