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  • 新闻发布项目——Servlet类(doDelNewsServlet )

    package bdqn.newsManageServlet.Servlet;
    
    import java.io.IOException;
    import java.io.PrintWriter;
    
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import bdqn.newsManageServlet.Dao.newsTbDao;
    import bdqn.newsManageServlet.Dao.Impl.newsTbDaoImpl;
    import bdqn.newsManageServlet.Service.commentService;
    import bdqn.newsManageServlet.Service.Impl.commentServiceImpl;
    
    public class doDelNewsServlet extends HttpServlet {
    
    	/**
    	 * Destruction of the servlet. <br>
    	 */
    	public void destroy() {
    		super.destroy(); // Just puts "destroy" string in log
    		// Put your code here
    	}
    
    	/**
    	 * The doGet method of the servlet. <br>
    	 *
    	 * This method is called when a form has its tag value method equals to get.
    	 * 
    	 * @param request the request send by the client to the server
    	 * @param response the response send by the server to the client
    	 * @throws ServletException if an error occurred
    	 * @throws IOException if an error occurred
    	 */
    	public void doGet(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    
    		response.setContentType("text/html;charset=utf-8");
    		PrintWriter out = response.getWriter();
    		request.setCharacterEncoding("utf-8");
    		//获取新闻的id
    		int newsid=Integer.parseInt(request.getParameter("newsid"));
    		//执行删除的操作
    		
    		//先删除该条新闻下面的评论,直接删掉
    		commentService commService=new commentServiceImpl();
    		//根据新闻的id删除新闻
    		commService.delComment(newsid);
    			//删除新闻
    			newsTbDao nDao=new newsTbDaoImpl();
    			int nrel=nDao.delNewsTb(newsid);
    			if(nrel>0){
    				out.print("<script>alert('删除新闻成功!');location.href='adminManage/editNews.jsp';</script>");
    			}else{
    				out.print("<script>alert('删除新闻失败!');location.href='adminManage/editNews.jsp';</script>");
    			}
    	}
    
    	/**
    	 * The doPost method of the servlet. <br>
    	 *
    	 * This method is called when a form has its tag value method equals to post.
    	 * 
    	 * @param request the request send by the client to the server
    	 * @param response the response send by the server to the client
    	 * @throws ServletException if an error occurred
    	 * @throws IOException if an error occurred
    	 */
    	public void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    
    		doGet(request, response);
    	}
    
    	/**
    	 * Initialization of the servlet. <br>
    	 *
    	 * @throws ServletException if an error occurs
    	 */
    	public void init() throws ServletException {
    		// Put your code here
    	}
    
    }
    

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  • 原文地址:https://www.cnblogs.com/a1111/p/6540304.html
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