No primary or single unique constructor found for interface java.util.List

参考：https://blog.csdn.net/bryangp/article/details/112789234
注意要设置：required=false，不然这个参数没有的话，就会报错。

@RequestMapping("/batchDeleteProduct")
public   TmyResult batchDeleteProduct( List<Integer> ids){
    System.out.println(ids);
    return null;
}
/**需要在list前面添加注解@RequestParam(value = "ids" ,required=false) */
   @RequestMapping("/batchDeleteProduct")
    public   TmyResult batchDeleteProduct( @RequestParam(value = "ids",required=false) List<Integer> ids){
    System.out.println(ids);
    return null;
}