SpringMVC Failed to instantiate [java.util.List]: Specified class is an interface

@RequestMapping("/test/save")
public Result save(Integer threadNum, Integer pageIndex, Integer pageSize, Integer totalPage,  List<String> productCodes) {
...
}

在SpringMVC中使用List<T>参数，用Postman测试接口报错，提示：

org.springframework.beans.BeanInstantiationException: Failed to instantiate [java.util.List]: Specified class is an interface
SpringMvc报错解决：Failed to instantiate [java.util.List]: Specified class is an interface 

解决方式：
方法1：List参数加上@RequestParam(value = "productCodes")注解，调用方式不变

@RequestMapping("/saveAllGroupProductPrice")
public Result save(Integer threadNum, Integer pageIndex, Integer pageSize, Integer totalPage, @RequestParam(value = "productCodes", required = false) List<String> productCodes) {
...
}

方法2：请求参数封装为XxxReqvo，使用@RequestBody注解，改用application/json调用。