photodeleteservlet.java

来自「JDBC数据库高级编程源代码」· Java 代码 · 共 43 行

package jdbcbook.photo;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

import jdbcbook.pub.util.*;

/**
 * 删除照片处理Servlet
 */
public class PhotoDeleteServlet extends HttpServlet
{

	public void doPost(HttpServletRequest request, HttpServletResponse response)
						throws IOException, ServletException
	{
		// 得到照片的主键值
		int nPhotoID = RequestUtil.getInt( request, "photoid", 0 );
		if( nPhotoID > 0 )
		{
			// 删除照片
			Boolean result = PhotoBean.deletePhoto( nPhotoID );
			if( result )
				RequestUtil.setMsg( this, request, "deletephotosuccess" );
			else
				RequestUtil.setMsg( this, request, "deletephotofailure" );
		}

		// 跳转到照片列表Servlet
		RequestDispatcher dispatcher = request.getRequestDispatcher( "photolist" );
		dispatcher.forward( request, response );
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
						throws IOException, ServletException
	{
		doPost( request, response );
	}
}