articledelete.java

JDBC数据库高级编程源代码

package jdbcbook.msgboard;

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

import jdbcbook.pub.util.*;

public class ArticleDelete extends HttpServlet 
{

	public void doGet(HttpServletRequest request, HttpServletResponse response)
		throws IOException, ServletException
	{
		// 得到用户要删除的留言的主键
		int nArticleID = RequestUtil.getInt( request, "articleid", 0 );

		// 进行权限的判断
		if( nArticleID > 0 && AuthorityBean.hasAuthority( nArticleID, request ) )
		{
			// 用户具有对该留言的操作权限
			// 执行删除操作
			ArticleBean.deleteArticle( nArticleID );
			// 设置提示信息
			RequestUtil.setMsg( this, request, "artdelsuccess" );
		}
		else
		{
			// 用户不具有对该留言的操作权限
			// 设置提示信息
			RequestUtil.setMsg( this, request, "notfundarticle" );
		}

		// 跳转到留言列表Servlet
		RequestDispatcher dispatcher = request.getRequestDispatcher( "articlelist" );
		dispatcher.forward( request, response );
	}
}