when i use command `mvn test -Xlint:unchecked` . some error appear

Looks like your question is similar with Trouble with -Xlint:all and maven or even How to compile using -Xlint:unchecked in a Maven project?

Just add

<compilerArguments>
    <Xlint:unchecked />
</compilerArguments>

or

<compilerArguments>-Xlint:unchecked</compilerArguments>

to your maven-compiler-plugin configuration