1. 伪静态化

为了迎合搜索引擎的排名规则
web.xml

<!-- springmvc的前端控制器 -->
    <servlet>
        <servlet-name>e3-portal-web</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- contextConfigLocation不是必须的， 如果不配置contextConfigLocation， springmvc的配置文件默认在：WEB-INF/servlet的name+"-servlet.xml" -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>e3-portal-web</servlet-name>
        <!-- 伪静态化 -->
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>

2. 拦截配置，不需要输入后缀，访问首页

配置web.xml

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

<!-- springmvc的前端控制器 -->
    <servlet>
        <servlet-name>e3-portal-web</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- contextConfigLocation不是必须的， 如果不配置contextConfigLocation， springmvc的配置文件默认在：WEB-INF/servlet的name+"-servlet.xml" -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>e3-portal-web</servlet-name>
        <!-- 伪静态化 -->
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>

创建IndexController

@Controller
public class IndexController {
    
    @RequestMapping("/index")
    public String showIndex(Model model) {
        return "index";
    }
}

这样就可以直接通过主域名直接访问到首页，例如http://jd.com