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

    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.Service.categoryTBService;
    import bdqn.newsManageServlet.Service.Impl.categoryTBServiceImpl;
    
    public class doDelCategoryServlet 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();
    
    		//获取id
    		int id=Integer.parseInt(request.getParameter("cgid"));
    		//创建业务逻辑层的对象
    		categoryTBService sgService = new categoryTBServiceImpl();
    		int rel = sgService.delCategory(id);
    		if (rel > 0) {
    		//删除成功!
    			out.print("<script>alert('删除成功');location.href='adminManage/manageTopic.jsp';</script>");
    		} else if(rel==0) {
    			//删除失败
    			out.print("<script>alert('删除失败,该类别下有新闻,不能删除');location.href='adminManage/manageTopic.jsp';</script>");
    		}else{
    			//删除失败
    			out.print("<script>alert('删除失败,请联系管理员!!!');location.href='adminManage/manageTopic.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/6540305.html
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