当用户登录时，Spring保存语言环境并更改语言环境

您可以实现LocaleResolver接口以将用户Locale绑定到数据库。下面是示例实现 “
ApplicationLocaleResolver.java”

import java.util.Locale;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Configuration;import org.springframework.security.core.context.SecurityContext;import org.springframework.security.core.context.SecurityContextHolder;import org.springframework.web.servlet.i18n.SessionLocaleResolver;import net.app.locale.service.UserService;@Configurationpublic class ApplicationLocaleResolver extends SessionLocaleResolver {    @Autowired    UserService userService;    @Override    public Locale resolveLocale(HttpServletRequest request) {        SecurityContext securityContext = SecurityContextHolder.getContext();        String userName = securityContext.getAuthentication().getName();        String localeOption = userService.getUsersPreferedLocaleOption(userName);        Locale userLocale = Locale.forLanguageTag(localeOption);        return userLocale;    }    @Override    public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {        super.setLocale(request, response, locale);        SecurityContext securityContext = SecurityContextHolder.getContext();        String userName = securityContext.getAuthentication().getName();        userService.saveUsersPreferedLocaleOption(userName, locale);    }}

我假设您的userService具有将用户保存到db本地的方法。我希望

userService.saveUsersPreferedLocaleOption(userName,locale);

然后，您可以如下替换localeResolver bean定义。

@Bean(name = "localeResolver")public LocaleResolver localeResolver() {    return new ApplicationLocaleResolver();}