自动重定向根路径到Spring Boot上下文路径

Question

我正在使用application.properties文件中指定的Spring Boot上下文路径，它工作得很好

server.port=5000
server.context-path=/services

Spring Boot 2.0及以上版本

server.port=5000
server.servlet.context-path=/services

Answer 1

我想我可以提供一个解决方案。请参考下面的代码。

@Configuration
public class RootServletConfig {

    @Bean
    public TomcatServletWebServerFactory servletWebServerFactory() {
        return new TomcatServletWebServerFactory() {

            @Override
            protected void prepareContext(Host host, ServletContextInitializer[] initializers) {
                super.prepareContext(host, initializers);
                StandardContext child = new StandardContext();
                child.addLifecycleListener(new Tomcat.FixContextListener());
                child.setPath("");
                ServletContainerInitializer initializer = getServletContextInitializer(getContextPath());
                child.addServletContainerInitializer(initializer, Collections.emptySet());
                child.setCrossContext(true);
                host.addChild(child);
            }
        };
    }

    private ServletContainerInitializer getServletContextInitializer(String contextPath) {
        return (c, context) -> {
            Servlet servlet = new HttpServlet() {
                @Override
                protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
                    resp.sendRedirect(contextPath);
                }
            };
            context.addServlet("root", servlet).addMapping("/*");
        };
    }
}