springMVC传参过程中遇到这样一个错误：Could not instantiate bean class [java.util.List]: Specified class is an inte

这样一个错误：Could not instantiate bean class [java.util.List]: Specified class is an inte"/>

springMVC传参过程中遇到这样一个错误：Could not instantiate bean class [java.util.List]: Specified class is an inte

springMVC传参过程中遇到这样一个错误：Could not instantiate bean class [java.util.List]: Specified class is an interface] with root cause
解决方案:
将List参数放到实体中作为属性接收前台的参数

public class AttachmentVo implements Serializable {private List<MultipartFile> files4;private List<MultipartFile> files5;private List<MultipartFile> files7;}    

前台

<td><input type="file" style="width:200px" accept="image/jpeg,image/gif,image/png" name="files4" id="_gdfile4" /></td><td><input type="file" style="width:200px" accept="image/jpeg,image/gif,image/png" name="files4" id="_gdfile41" /></td><td><input type="file" style="width:200px" accept="image/jpeg,image/gif,image/png" name="files4" id="_gdfile42" /></td><td><input type="file" style="width:200px" accept="image/jpeg,image/gif,image/png" name="files4" id="_gdfile43" /></td>