public class UploadsAction extends BaseAction{
    private File[] file;
    private String[] fileFileName;
    private String[] fileContentType;
    private String serverDir = "/Upload";

    public File[] getFile() {
        return file;
    }

    public void setFile(File[] file) {
        this.file = file;
    }

    public String[] getFileFileName() {
        return fileFileName;
    }

    public void setFileFileName(String[] fileFileName) {
        this.fileFileName = fileFileName;
    }

    public String[] getFileContentType() {
        return fileContentType;
    }

    public void setFileContentType(String[] fileContentType) {
        this.fileContentType = fileContentType;
    }
    /**
     * 獲取資料夾的真實路徑
     *
     * @param Path
     * @return
     */
    private String getRealPath(String Path) {
        return this.request.getServletContext().getRealPath(Path);
    }



    /**
     * 上傳
     *
     * @return
     */
    public String upload() throws IOException {
        for (int i = 0; i < file.length; i++) {
            System.out.println("名字" + fileFileName[i]);
            System.out.println("型別" + fileContentType[i]);
            //真實路徑  ,檔名前面加上uuid是因為可能會因為檔名相同而覆蓋
            String realPath = getRealPath(serverDir + "/" + UUID.randomUUID().toString() +fileFileName[i]);
            System.out.println(realPath);
            //複製
            FileUtils.copyFile(file[i], new File(realPath));
        }
        

        return "Interceptor";
    }

}
 

BaseAction

package com.hw.one.web;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;

/**
 * 每一個開發的子控制器要用的屬性都定義在通用的action中。
 * @author Administrator
 *
 */
public class BaseAction implements ServletRequestAware, ServletResponseAware{
	/**
	 * 為了傳值使用
	 */
	protected HttpServletResponse response;
	protected HttpServletRequest request;
	protected HttpSession session;
	protected ServletContext application;
	
	/**
	 * 為了配置跳轉頁面所用
	 */
	protected final static String SUCCESS = "success";
	protected final static String FAIL = "fail";
	protected final static String LIST = "list";
	protected final static String ADD = "add";
	protected final static String EDIT = "edit";
	protected final static String DETAIL = "detail";
	
	/**
	 * 具體傳值欄位	後端向jsp頁面傳值所用欄位
	 */
	protected Object result;
	protected Object msg;
	protected int code;

	public Object getResult() {
		return result;
	}

	public Object getMsg() {
		return msg;
	}

	public int getCode() {
		return code;
	}

	@Override
	public void setServletResponse(HttpServletResponse arg0) {
		this.response = arg0;
		
	}

	@Override
	public void setServletRequest(HttpServletRequest arg0) {
		this.request = arg0;
		this.session = arg0.getSession();
		this.application = arg0.getServletContext();
	}
	

}
 

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