如何从Spring Java配置@Configuration类从WEB-INF获取资源？ [英] How to get resources from WEB-INF from Spring java configuration @Configuration class?

问题描述

我正在尝试在春季之一创建 @Bean 的过程中将特定资源加载到 WEB-INF 目录下 @Configuration 类。

I am trying to load specific resource under WEB-INF directory during @Bean creation in one of the Spring @Configuration classes.

据我所知 @ImportResource 仅用于Spring xml配置，而不用于其他文件。
使用 ClassLoader 的方法不起作用，并且始终返回 null 。

As I know @ImportResource is used only for Spring xml configurations and not for other files. Approaches with ClassLoader don't work and always return null.

例如：

    @Bean
    public aBean someBean() {
        final URL someFolderDirUrl = WebConfig.class.getClassLoader().getResource("WEB-INF/someFolder");
        final URL someFolderDirUrl2 = WebConfig.class.getClassLoader().getResource("/someFolder");
        final URL someFolderDirUrl3 = WebConfig.class.getClassLoader().getResource("/WEB-INF/someFolder");
        final URL someFolderDirUrl4 = WebConfig.class.getClassLoader().getResource("someFolder");

        // final URI someFolderDirUri = new URI("file:/WEB-INF/someFolder");

        if(modulesDirUrl != null) {
            File someFolderDirFile;
            try {
                someFolderDirFile = new File(someFolderDirUrl.toURI());
            } catch(final URISyntaxException e) {
                someFolderDirFile = new File(someFolderDirUrl.getPath());
            }

            return new aBean(someFolderDirFile);
        }

        return new aBean();
    }

最后，所有 someFolderDirUrlX 变量都是 null ，与 someFolderDirUri 相同。

At the end all someFolderDirUrlX variables are null, the same for someFolderDirUri.

是否可以在Spring的 @Configuration 类中获得一个 File 对象，该对象指向 WEB-中的文件或目录。 INF ？

Is it possible to get a File object inside Spring's @Configuration class which points to file or directory inside WEB-INF?

推荐答案

您可以从ServletContext中访问它：

You could access this from the ServletContext:

@Autowired
ServletContext servletContext;

@Bean
public aBean someBean() {
     File someFolderDirUrl = new File( servletContext.getRealPath("/WEB-INF/") );
     ....
}

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