Question

我创建了两个thymleaf解析器并将它们添加到模板引擎中，因此我可以在spring-boot中处理txt / svg模板。

@Configuration
public class TemplateEngineConfig {

    @Bean
    public SpringTemplateEngine textTemplateEngine() {
        SpringTemplateEngine templateEngine = new SpringTemplateEngine();
        templateEngine.addTemplateResolver(textTemplateResolver());
        templateEngine.addTemplateResolver(svgTemplateResolver());
        return templateEngine;
    }

    private ITemplateResolver textTemplateResolver() {
        ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
        templateResolver.setOrder(1);
        templateResolver.setPrefix("templates/");
        templateResolver.setSuffix(".txt");
        templateResolver.setTemplateMode(TemplateMode.TEXT);
        templateResolver.setCacheable(false);
        return templateResolver;
    }

    private ITemplateResolver svgTemplateResolver() {
        ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
        templateResolver.setOrder(2);
        templateResolver.setPrefix("templates/");
        templateResolver.setSuffix(".svg");
        templateResolver.setTemplateMode(TemplateMode.TEXT);
        templateResolver.setCacheable(false);
        return templateResolver;
    }
}

我这样使用它。

@Component
public class TemplateRenderer {

    @Autowired
    @Qualifier("textTemplateEngine")
    private TemplateEngine textTemplateEngine;

    public String renderPlainText(String filename, Map<String, Object> params) {
        Context context = new Context(LocaleContextHolder.getLocale(), params);
        return textTemplateEngine.process(filename, context);
    }

}

它不起作用。我尝试渲染templates/img.svg，但是Thymleaf抱怨它找不到templates/img.txt文件，我怎么能让它工作？

Answer 1

只需强制SpringTemplateEngine检查模板是否存在，而不仅仅是使用定义的模式。请强制添加

templateResolver.setCheckExistence(true);

到每个模板解析器。

Answer 2

我认为你应该用@bean和Qualifier标记ITemplateResolver 你将@autowire textTemplateEngine或svgTemplateEngine，所以spring将使用限定符名称自动装配它们。

@Bean
@Qualifier("textTemplateEngine")
private ITemplateResolver textTemplateResolver() {
    ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
    templateResolver.setOrder(1);
    templateResolver.setPrefix("templates/");
    templateResolver.setSuffix(".txt");
    templateResolver.setTemplateMode(TemplateMode.TEXT);
    templateResolver.setCacheable(false);
    return templateResolver;
}

@Bean
@Qualifier("svgTemplateEngine")
private ITemplateResolver svgTemplateResolver() {
    ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
    templateResolver.setOrder(2);
    templateResolver.setPrefix("templates/");
    templateResolver.setSuffix(".svg");
    templateResolver.setTemplateMode(TemplateMode.TEXT);
    templateResolver.setCacheable(false);
    return templateResolver;
}

您也可以通过xml配置配置Thymeleaf多个解析器，如：

<bean class="org.thymeleaf.spring4.view.ThymeleafViewResolver">
  <property name="characterEncoding" value="UTF-8" />
  <property name="templateEngine">
    <bean class="org.thymeleaf.spring4.SpringTemplateEngine">
      <property name="dialects">
        <set>
          <bean class="org.thymeleaf.spring4.dialect.SpringStandardDialect" />
        </set>
      </property>
      <property name="templateResolvers">
        <set>
          <bean class="org.thymeleaf.templateresolver.ServletContextTemplateResolver">
            <property name="cacheable" value="false" />
            <property name="prefix" value="/fragments/" />
            <property name="suffix" value=".html" />
            <property name="templateMode" value="HTML5" />
          </bean>
          <bean class="org.thymeleaf.templateresolver.ServletContextTemplateResolver">
            <property name="cacheable" value="false" />
            <property name="prefix" value="/views/" />
            <property name="suffix" value=".html" />
            <property name="templateMode" value="HTML5" />
          </bean>
        </set>
      </property>
    </bean>
  </property>
</bean>

在spring-boot中使用一个模板引擎渲染多个后缀

2 个答案: