类包中的 Thymeleaf 模板

Question

有没有办法将 Thymeleaf 模板存储在 resources 或 webapp 中，而不是在与类相同的包中？例如这样的结构：

com
   example
      myapp
         foo
            Foo.class
            Template.html
         bar
            Bar.class
            Template.html
            OtherTemplate.html

为了实现这一点，我必须如何配置 Spring 和 Thymeleaf？

Answer 1

您需要在WebMvcConfigurer 中定义一个ClassLoaderTemplateResolver。

在以下示例中，我拥有模板的基本包是 net.yadaframework.views（在您的情况下应该是 com.example.myapp）。 当我从控制器返回视图时，路径是相对于该包的，因此在您的示例中为 "/foo/Template"。 patterns 集应包含基本包的子文件夹，因此在您的示例中为 "/foo/*" 和 "/bar/*"。

@EnableWebMvc
@ComponentScan(basePackages = { "net.yadaframework.views" })
public class YadaWebConfig implements WebMvcConfigurer {

    public ClassLoaderTemplateResolver yadaTemplateResolver() {
        ClassLoaderTemplateResolver resolver = new ClassLoaderTemplateResolver();
        resolver.setPrefix("net/yadaframework/views");
        /* From the tutorial:
         When several template resolvers are applied, it is recommended to specify patterns 
         for each template resolver so that Thymeleaf can quickly discard those template resolvers 
         that are not meant to resolve the template, enhancing performance. Doing this is not a 
         requirement, but a recommendation
         */
        Set<String> patterns = new HashSet<>();
        patterns.add("/yada/*"); // Start with "yada". Patterns are NOT regexp
        patterns.add("/yadacms/*"); // Start with "yadacms". Patterns are NOT regexp
        resolver.setResolvablePatterns(patterns);
        resolver.setSuffix(".html");
        resolver.setCharacterEncoding("UTF-8");
        resolver.setTemplateMode(TemplateMode.HTML);
        resolver.setCacheable(true);
        resolver.setOrder(10); 
        return resolver;
    }