CustomerAction.java（Action物件,接收檔案型別引數）：

package cn.xxx.web.action;

import java.io.File;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import cn.xxx.domain.Customer;

public class CustomerAction extends ActionSupport implements ModelDriven<Customer> {
	private Customer customer = new Customer();  //Action接收引數的方式,模型驅動和屬性驅動等方式可以混用(一起用) 
	
	//上傳的檔案會自動封裝到File物件
	//"photo"要與前臺<input type="file" name="photo" />元件 name屬性值相同
	private File photo;
	//上傳檔案的名稱會自動封裝到xxxFileName屬性中
	private String photoFileName;
	//上傳檔案的MIME型別會自動封裝到xxxContentType屬性中 
	private String photoContentType;
	

	@Override
	public String execute() throws Exception {
		if(photo!=null){
			System.out.println("檔名稱:"+photoFileName);   //abc.jpg
			System.out.println("檔案MIME型別:"+photoContentType);  //image/jpeg
			//將上傳的檔案儲存到指定位置
			photo.renameTo(new File("E:/upload/xxx.jpg"));
		}
		// ...................
		
		return "success";
	}

	@Override
	public Customer getModel() {
		return customer;
	}

	public File getPhoto() {
		return photo;
	}

	public void setPhoto(File photo) {
		this.photo = photo;
	}

	public String getPhotoContentType() {
		return photoContentType;
	}

	public void setPhotoContentType(String photoContentType) {
		this.photoContentType = photoContentType;
	}

	public String getPhotoFileName() {
		return photoFileName;
	}

	public void setPhotoFileName(String photoFileName) {
		this.photoFileName = photoFileName;
	}
	
}