struts2+hibernate做的上传和文件

package action;

import java.io.InputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class DownAction extends ActionSupport{
	private String inputPath;


	public void setInputPath（String inputPath） {
		this.inputPath = inputPath;
	}
	public InputStream getInputStream（） throws Exception{
		return ServletActionContext.getServletContext（）.getResourceAsStream（inputPath）;
	}
	@Override
	public String execute（） throws Exception {
		// TODO Auto-generated method stub
		return “su“;
	}

}