articleservlet.java

我的博客

package com.yxq.servlet;

import java.io.IOException;
import java.util.Date;
import java.util.List;

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

import com.yxq.dao.ArticleDao;
import com.yxq.dao.ArticleTypeDao;
import com.yxq.dao.ReviewDao;
import com.yxq.toolsbean.MyTools;
import com.yxq.valuebean.ArticleBean;
import com.yxq.valuebean.ArticleTypeBean;
import com.yxq.valuebean.ReviewBean;

public class ArticleServlet extends HttpServlet
{
	private static final long serialVersionUID = 1L;

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

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException
	{
		String action = request.getParameter("action");
		if (action == null)
			action = "";
		if (action.equals("select"))
			this.selectArticle(request, response); // 获取某类别下所有文章
		if (action.equals("adminSelectList"))
			this.adminSelectList(request, response);
		if (action.equals("adminSelectSingle"))
			this.adminSelectSingle(request, response);
		if (action.equals("add"))
			this.addArticle(request, response); // 增加文章
		if (action.equals("delete"))
			this.deleteArticle(request, response); // 删除文章
		if (action.equals("modify"))
			this.modifyArticle(request, response); // 修改文章
		if (action.equals("read"))
			this.readArticle(request, response); // 阅读文章
		if (action.equals("followAdd"))
			this.validateFollow(request, response); // 发表文章回复
		if (action.equals("typeAdd"))
			this.addArticleType(request, response); // 增加文章类别
		if (action.equals("typeSelect"))
			this.selectArticleType(request, response); // 查看文章类别
		if (action.equals("typeModify"))
			this.modifyArticleType(request, response); // 修改文章类别
		if (action.equals("typeDelete"))
			this.deleteArticleType(request, response); // 删除文章类别
	}

	/**
	 * @功能 验证评论信息
	 */
	public void validateFollow(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		boolean mark = true;
		String messages = "";

		String content = request.getParameter("reContent");
		if (content == null || content.equals(""))
		{
			mark = false;
			messages = "<li>请输入 <b>评论内容！</b></li>";
		}
		if (mark)
		{
			content = MyTools.toChinese(content);
			if (content.length() > 1000)
			{
				mark = false;
				messages = "<li><b>评论内容</b> 最多允许输入1000个字符！</li>";
			}
		}
		if (!mark)
		{
			request.setAttribute("messages", messages);
			RequestDispatcher rd = request
					.getRequestDispatcher("/front/article/error.jsp");
			rd.forward(request, response);
		} else
		{
			followAdd(request, response);
		}
	}

	/**
	 * @功能 添加文章评论
	 */
	public void followAdd(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		int id = Integer.parseInt(request.getParameter("articleId"));
		String author = MyTools.toChinese(request.getParameter("reAuthor"));
		String content = MyTools.toChinese(request.getParameter("reContent"));
		String today = MyTools.changeTime(new Date());
		if (author == null || author.equals(""))
			author = "匿名好友";

		ReviewBean reviewBean = new ReviewBean();
		reviewBean.setArticleId(id);
		reviewBean.setReAuthor(author);
		reviewBean.setReContent(content);
		reviewBean.setReSdTime(today);

		ReviewDao reviewDao = new ReviewDao();
		String messages = "";
		String forward = "";
		boolean mark = reviewDao.operationReview("add", reviewBean);
		if (mark)
		{
			forward = "/front/article/success.jsp";
			messages = "<li>发表评论成功！</li>";

		} else
		{
			forward = "/front/article/error.jsp";
			messages = "<li>发表评论失败！</li>";
		}
		request.setAttribute("messages", messages);
		RequestDispatcher rd = request.getRequestDispatcher(forward);
		rd.forward(request, response);

	}

	/**
	 * @功能 阅读文章
	 * @实现 1.增加文章阅读次数<br>
	 *     2.获取指定文章信息<br>
	 *     3.获取对该文章的所有评论
	 */
	public void readArticle(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		HttpSession session = request.getSession();
		ArticleBean articleBean = new ArticleBean();
		ArticleDao articleDao = new ArticleDao();
		ReviewDao reviewDao = new ReviewDao();

		String strId = request.getParameter("id");
		int id = MyTools.strToint(strId);
		articleBean.setId(id);

		articleDao.operationArticle("readTimes", articleBean); // 累加阅读次数
		articleBean = articleDao.queryArticleSingle(id); // 查询指定文章的详细内容
		session.setAttribute("readSingle", articleBean); // 保存articleBean到request对象中

		List<?> reviewlist = reviewDao.queryReview(id);
		session.setAttribute("reviewlist", reviewlist);

		RequestDispatcher rd = request
				.getRequestDispatcher("/front/article/ArticleSingle.jsp");
		rd.forward(request, response);
	}

	/**
	 * @功能 修改文章
	 */
	public void modifyArticle(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		HttpSession session = request.getSession();
		RequestDispatcher rd = null;
		ArticleDao articleDao = new ArticleDao();
		String type = request.getParameter("type");
		if (type == null)
			type = "";
		if (!type.equals("doModify"))
		{
			int id = MyTools.strToint(request.getParameter("id"));
			ArticleBean articleBean = articleDao.queryArticleSingle(id);
			request.setAttribute("modifySingle", articleBean);
			rd = request
					.getRequestDispatcher("/admin/article/ArticleModify.jsp");
			rd.forward(request, response);
		} else
		{
			String messages = "";
			String href = "";
			String forward = "";
			boolean flag = validateArticle(request, response);
			if (flag)
			{
				ArticleBean articleBean = new ArticleBean();
				articleBean.setId(MyTools.strToint(request.getParameter("id")));
				articleBean.setTypeId(Integer.valueOf(request
						.getParameter("typeId")));
				articleBean.setTitle(MyTools.toChinese(request
						.getParameter("title")));
				articleBean.setCreate(MyTools.toChinese(request
						.getParameter("create")));
				articleBean.setInfo(MyTools.toChinese(request
						.getParameter("info")));
				articleBean.setContent(MyTools.toChinese(request
						.getParameter("content")));

				boolean mark = articleDao.operationArticle("modify",
						articleBean);
				if (mark)
				{
					messages = "<li>修改成功！</li>";
					href = "<a href='ArticleServlet?action=adminSelectList&typeId="
							+ session.getAttribute("showTypeId")
							+ "'>[继续修改其他文章]</a>";
					forward = "/admin/success.jsp";
				} else
				{
					messages = "<li>修改失败！</li>";
					href = "<a href='javascript:window.history.go(-1)'>[返回]</a>";
					forward = "/admin/error.jsp";
				}
				request.setAttribute("messages", messages);
				request.setAttribute("href", href);
			} else
			{
				href = "<a href='javascript:window.history.go(-1)>[返回]</a>";
				forward = "/admin/error.jsp";
				request.setAttribute("href", href);
			}
			rd = request.getRequestDispatcher(forward);
			rd.forward(request, response);
		}

	}

	/**
	 * @功能 后台-删除文章
	 */
	public void deleteArticle(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		ArticleDao articleDao = new ArticleDao();
		ArticleBean articleBean = new ArticleBean();

		String messages = "";
		String href = "";
		String forward = "";
		articleBean.setId(MyTools.strToint(request.getParameter("id")));
		boolean mark = articleDao.operationArticle("delete", articleBean);
		if (mark)
		{
			String typeId = request.getParameter("typeId");
			messages += "<li>删除文章成功！</li>";
			href = "<a href='ArticleServlet?action=adminSelectList&typeId="
					+ typeId + "'>[继续删除其他文章]</a>";
			forward = "/admin/success.jsp";

		} else
		{
			messages += "<li>删除文章失败！</li>";
			href = "<a href='javascript:window.history.go(-1)'>[返回]</a>";
			forward = "/admin/error.jsp";
		}
		request.setAttribute("messages", messages);
		request.setAttribute("href", href);
		RequestDispatcher rd = request.getRequestDispatcher(forward);
		rd.forward(request, response);
	}

	/**
	 * @功能 验证发表文章信息
	 */
	public boolean validateArticle(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException
	{
		boolean mark = true;
		String messages = "";

		String typeId = request.getParameter("typeId");
		String title = request.getParameter("title");
		String create = request.getParameter("create");
		String info = request.getParameter("info");
		String content = request.getParameter("content");

		if (typeId == null || typeId.equals(""))
		{
			mark = false;
			messages += "<li>请选择 <b>文章类别！</b></li>";
		}
		if (title == null || title.equals(""))
		{
			mark = false;
			messages += "<li>请输入 <b>文章标题！</b></li>";
		}
		if (create == null || create.equals(""))
		{
			mark = false;
			messages += "<li>请选择 <b>文章来源！</b></li>";
		}
		if (info == null || info.equals(""))
		{
			mark = false;
			messages += "<li>请输入 <b>文章描述！</b></li>";