deletefriend.java

功能描述 1） 后台：管理员负责对整个论坛进行管理

package bbs.servlet;
//deletefriend
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import bbs.db.FriendDBAccess;

public class DeleteFriend
    extends HttpServlet {
  private static final String CONTENT_TYPE = "text/html; charset=GBK";

  //Initialize global variables
  public void init() throws ServletException {
  }

  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    response.setContentType(CONTENT_TYPE);
    PrintWriter out = response.getWriter();
    //获得友情链接ID
    String id = request.getParameter("friendid");
    try {
      FriendDBAccess db = new FriendDBAccess();
      //判断是否删除成功
      if (db.delete(id) > 0) {
        request.getRequestDispatcher("selectfriend").forward(request,response);
        return;
      }
      else
      {
        request.setAttribute("message","对不起，删除失败！");
        request.getRequestDispatcher("selectfriend").forward(request,response);
      }
    }
    catch (Exception ex) {
      ex.printStackTrace();
      request.setAttribute("message", "数据库操作发生错误！");
      request.getRequestDispatcher("error.jsp").forward(request, response);

    }
    out.close();
  }

  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    doGet(request, response);
  }

  //Clean up resources
  public void destroy() {
  }
}