java - TemplateEngine 未在模板文件夹中查找文件

Question

我正在构建一个 SpringBoot 应用程序，该应用程序从数据库加载国际化消息。(Followed this tutorial)

由此，我必须创建一个 ThymeleafConfiguration 类并设置一个 SpringTemplateEngine Bean。本教程仅给出了有关此配置的粗略想法(仅配置了消息源，但没有配置其他模板引擎配置)，因此它破坏了我的 Controller 页面渲染( Controller 现在返回字符串而不是 View )。

我正在尝试配置 TemplateEngine 的其余部分(例如 TemplateResolver，我认为这是渲染不正确的原因)，但是，我不知道如何正确执行它[我保留收到“模板解析期间发生错误(模板:“ServletContext 资源 [/templates/login.html]”)”消息]。

如何正确配置SpringTemplateEngine？

到目前为止我的配置:

@Configuration
public class ThymeleafConfiguration implements WebMvcConfigurer, ApplicationContextAware{

    private ApplicationContext applicationContext;

    @Autowired
    private DatabaseMessageSource databaseMessageSource;

    @Bean
      public ViewResolver viewResolver() {
        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
        resolver.setTemplateEngine(thymeleafTemplateEngine());
        resolver.setCharacterEncoding("UTF-8");
        return resolver;
      }

     private ITemplateResolver templateResolver() {
            SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
            resolver.setApplicationContext(applicationContext);
            resolver.setPrefix("/templates/");
            resolver.setSuffix(".html");
            resolver.setTemplateMode(TemplateMode.HTML);
            return resolver;
          }


    @Bean
    public SpringTemplateEngine thymeleafTemplateEngine() {
        SpringTemplateEngine engine = new SpringTemplateEngine();
        engine.setTemplateResolver(templateResolver());
        engine.setTemplateEngineMessageSource(databaseMessageSource);
        return engine;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;

    }

}

Controller 类:

 @Controller
    public class ApplicationController {


    @RequestMapping("/home")
    public String home() {
        return "/home.html";
    }


    @RequestMapping("/core/index")
    public String index() {
        return "/core/index.html";
    }

    @RequestMapping("/login")
    public String login() {
        return "login";
    }

Answer 1

问题在于

private ITemplateResolver templateResolver() {
    SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
    resolver.setApplicationContext(applicationContext);
    resolver.setPrefix("/templates/"); // Here!!!
    resolver.setSuffix(".html");
    return resolver;
}

由于模板位于 src/main/resources 中，因此必须指向类路径，如下所示:

@Bean
public SpringResourceTemplateResolver templateResolver() {
    SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
    resolver.setApplicationContext(applicationContext);
    resolver.setPrefix("classpath:/templates/"); // It works after adding 'classpath:'
    resolver.setSuffix(".html");
    return resolver;
}

此外，从接口(interface)到实现类有一些变化，但不会影响结果。