viewpicaction.java

该代码是Java数据库高级编程宝典中的重要的代码

package jdbcbook.shopping.action;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import jdbcbook.shopping.util.DispatchActionEx;
import jdbcbook.shopping.database.ManageDB;
import jdbcbook.shopping.form.Product;

public class ViewpicAction extends DispatchActionEx
{
	// 输出商品图片
	public ActionForward viewpic(ActionMapping mapping,
								ActionForm form,
								HttpServletRequest request,
								HttpServletResponse response)
								throws IOException, ServletException
	{
		int nID = ((Product)form).getId();
		// 输出图片到Response
		ManageDB.outPicture( response, nID );
		return null;
	}
	
}