articleupdate.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.*;

/**
 * 修改留言的取得留言处理方法
 */
public class ArticleUpdate extends HttpServlet 
{
	public void doGet(HttpServletRequest request, HttpServletResponse response)
		throws IOException, ServletException
	{
		// 得到要修改的留言的主键
		int nArticleID = RequestUtil.getInt( request, "articleid", 0 );

		boolean founded = false;
		if( nArticleID > 0 )
		{
			// 得到留言的信息
			Article art = ArticleBean.getArticle( nArticleID );
			if( AuthorityBean.hasAuthority( art, request ) )
			{
				request.setAttribute( "art", art );
				founded = true;
			}
		}
		if( !founded )
		{
			// 没找到要修改的留言，设置提示信息
			RequestUtil.setMsg( this, request, "notfundarticle" );
		}

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