如何从JUnit测试中访问webapp下的静态资源？

import org.junit.Test;
import org.springframework.mock.web.MockServletContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.ServletContextLoader;

import java.io.InputStream;
import java.net.URL;

public class MyTest {

    @Test
    public void testAccessStaticResource() {
        // 创建一个MockServletContext对象
        MockServletContext servletContext = new MockServletContext();

        // 加载webapp的配置
        ServletContextLoader loader = new ServletContextLoader(servletContext);
        loader.loadContext();

        // 获取WebApplicationContext对象
        WebApplicationContext webApplicationContext = (WebApplicationContext) servletContext.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE);

        // 获取ServletContext对象
        ServletContext servletContext = webApplicationContext.getServletContext();

        // 获取静态资源的URL
        URL resourceUrl = servletContext.getResource("/static/myfile.txt");
        System.out.println("静态资源URL：" + resourceUrl);

        // 获取静态资源的输入流
        InputStream inputStream = servletContext.getResourceAsStream("/static/myfile.txt");
        // 进行相应的处理
    }
}