gateway网关启动报错依赖错误Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean

之前正常的网关忽然启动不了，打开idea右侧maven依赖项分析，有一个包引用了javax.servlet.

在这个包里面排除掉即可.

<exclusions>
    <exclusion>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
    </exclusions>
</exclusion>