我的maven spring项目目录结构如下所示。我正在使用基于Spring-4注释的配置。我按如下方式配置资源。我尝试了许多Stackoverflow问题和其他网站中建议的许多方法

但是jsp文件无法加载资源，所有静态内容请求均返回404错误。我在jsp中尝试了这些东西，

 <link href="resources/css/bootstrap.css" rel="stylesheet" media="screen">
 <link href="/resources/css/bootstrap.css" rel="stylesheet" media="screen">
 <link href="css/bootstrap.css" rel="stylesheet" media="screen">

编辑：我正在使用Servlet 2.5，因为到目前为止，我无法将项目从JBoss 5升级到更高版本。JBoss5不支持Servlet 3，这有关系吗？

@Configuration
@ComponentScan("com.mgage.mvoice")
public class MyAppWebConfig extends WebMvcConfigurerAdapter {
     public void addResourceHandlers(ResourceHandlerRegistry registry) {  
        // I tried these many combinations separately.

        ResourceHandlerRegistration resourceRegistration = registry
            .addResourceHandler("resources/**");
        resourceRegistration.addResourceLocations("/resources/**");
        registry.addResourceHandler("/css/**").addResourceLocations("/css/**");
        registry.addResourceHandler("/img/**").addResourceLocations("/img/**");
        registry.addResourceHandler("/js/**").addResourceLocations("/js/**");
        registry.addResourceHandler("/resources/**")
                .addResourceLocations("classpath:/resources/"); 
              // do the classpath works with the directory under webapp?
     }

}