addcmt.java

一个JAVA做的博客系统。系统采用JSP + JS + TOMCAT + MYSQL制作。用户能上传图片和音乐到系统中。游客和用户自己能在页面中浏览文件和听歌。

package cmt;

import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Vector;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import common.User;
import essay.TitleOp;

public class AddCmt extends HttpServlet
{
	public void doPost(HttpServletRequest request, HttpServletResponse response)
		throws ServletException, IOException
	{
		request.setCharacterEncoding("gb2312");
		String at, path;
		at = request.getParameter("at");
		at = at.replaceAll("'", "&sq&");
		path = "/essay/show.jsp";
		HashMap props = (HashMap)request.getSession().getAttribute("props");
		try
		{
			int titleId = (Integer)props.get("titleId");
		    String un = ((User)props.get("user")).getUsername();
			Comment c = new Comment(titleId, un, at);
			CmtOp.Insert(c);
			Vector cmts = CmtOp.selectAll(titleId);
			if(props.containsKey("cmts"))
				props.remove("cmts");
			if(cmts != null)
				props.put("cmts", cmts);
			else
				throw new Exception("cmts is null");
		}
		catch(Exception e)
		{
			path = "/common/error.jsp";
			props.put("err", e.getMessage());
		}
		finally
		{
			request.getSession().setAttribute("props", props);
			RequestDispatcher rd = request.getRequestDispatcher(path);
			rd.forward(request, response);
		}
	}
}