Error:(12, 8) java: 无法访问javax.servlet.ServletException 找不到javax.servlet.ServletException的类文件

Error:(12, 8) java: 无法访问javax.servlet.ServletException
找不到javax.servlet.ServletException的类文件

需要添加servlet依赖

<dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

或者

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>7.0</version>
</dependency>