thymeleaf:将webjar css文件的内容插入到样式标记中

所以我和一个特别的圣殿骑士合作。它的逻辑和Spring的相似 WebJarsResourceResolver 及用途 WebJarAssetLocator .

public class WebJarTemplateResolver extends ClassLoaderTemplateResolver {

    private final static String WEBJARS_PREFIX = "/webjars/";

    private final static int WEBJARS_PREFIX_LENGTH = WEBJARS_PREFIX.length();

    private final WebJarAssetLocator webJarAssetLocator = new WebJarAssetLocator();

    @Override
    protected ITemplateResource computeTemplateResource(IEngineConfiguration configuration, String ownerTemplate, String template, String resourceName, String characterEncoding, Map<String, Object> templateResolutionAttributes) {

        resourceName = findWebJarResourcePath(template);
        if (resourceName == null) {
            return null;
        }

        return super.computeTemplateResource(configuration, ownerTemplate, template, resourceName, characterEncoding, templateResolutionAttributes);
    }

    @Nullable
    protected String findWebJarResourcePath(String templateName) {
        if (!templateName.startsWith(WEBJARS_PREFIX)) {
            return null;
        }

        int startOffset = WEBJARS_PREFIX_LENGTH;
        int endOffset = templateName.indexOf('/', startOffset);

        if (endOffset == -1) {
            return null;
        }

        String webjar = templateName.substring(startOffset, endOffset);
        String partialPath = templateName.substring(endOffset + 1);
        return this.webJarAssetLocator.getFullPathExact(webjar, partialPath);
    }
}

这与此配置集成到应用程序中:

@Configuration
public class ThymeleafConfiguration {

    private SpringTemplateEngine templateEngine;

    public ThymeleafConfiguration(SpringTemplateEngine templateEngine) {
        this.templateEngine = templateEngine;
    }

    @PostConstruct
    public void enableWebjarTemplates() {
        templateEngine.addTemplateResolver(new WebJarTemplateResolver());
    }
}