LocaleContextHolder.setLocale void 无法转换为语言环境

Question

@RequestMapping(method = RequestMethod.GET)
    public ModelAndView viewMain(Locale locale) {

        Locale currentLocale = LocaleContextHolder.setLocale(Locale.US);
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("locale", currentLocale);
        LOG.info("main " /* + name*/ + "page shown");
        modelAndView.setViewName("main_page");
        return modelAndView;
    }

当我尝试将本地设置设置为 Locale.US 时，我收到一个错误，即 void 无法转换为本地设置。但是 Locale.US 并非无效。如果我将 setLocale 更改为 getLocale() 一切正常。

Answer 1

这是因为LocaleContextHolder.setLocale() returns void。

所以只要把它设置在那里并在下面得到它：

@RequestMapping(method = RequestMethod.GET)
    public ModelAndView viewMain(Locale locale) {

        LocaleContextHolder.setLocale(Locale.US);
        Locale currentLocale = LocaleContextHolder.getLocale();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("locale", currentLocale);
        LOG.info("main " /* + name*/ + "page shown");
        modelAndView.setViewName("main_page");
        return modelAndView;
    }