maven依赖

1、若手动移除jar包的依赖包，而项目中其它地方没有依赖，编译不会报错，实际运行到此处会报错

<dependency>
    <groupId>com.xxx.xxx</groupId>
    <artifactId>cert</artifactId>
    <version>1.0-SNAPSHOT</version>
    <exclusions>
        <exclusion>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </exclusion>
    </exclusions>
</dependency>