src/servlet/AddServlet.java

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package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import util.Validate;

import bean.InsertUpdateDelBean;

public class AddServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public AddServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Validate vd = new Validate();
		String name = vd.getUnicode(request.getParameter("name"));
		String candi = vd.getUnicode(request.getParameter("candi"));
		String jinjia = vd.getUnicode(request.getParameter("jinjia"));
		String leibie = vd.getUnicode(request.getParameter("leibie"));
		String sql = "insert into wenxian values('"+name+"','"+candi+"','"+jinjia+"','"+leibie+"')";
		InsertUpdateDelBean iudb = new InsertUpdateDelBean();
		int flag = iudb.insertANDupdateANDdel(sql);
		if(flag == -1){
			request.setAttribute("error", "1");
		}else{
			request.setAttribute("ok", "1");
		}
		RequestDispatcher rd=request.getRequestDispatcher("/add.jsp");
        rd.forward(request,response);
	}

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

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */