1.导入依赖

<!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
<dependency>
    <groupId>commons-beanutils</groupId>
    <artifactId>commons-beanutils</artifactId>
    <version>1.9.4</version>
</dependency>

2.具体方法
String[] empnoarrays = request.getParameterValues("empnoarray");

//将string[]强转成Integer[]
Integer[] ids = (Integer[])ConvertUtils.convert(empnoarrays, Integer.class);
Integer delete = empService.delete(ids);