新闻发布项目——Servlet类(doDelNewsServlet )
2023-09-14 08:57:41 时间
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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