UserChecker.java
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package com.servlet.bksh.UMC;
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 javax.servlet.http.HttpSession;
import com.service.bksh.SHUserService;
/**
* Servlet implementation class UserChecker
*/
public class UserChecker extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public UserChecker() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request,response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
String username = request.getParameter("username");
String password = request.getParameter("password");
SHUserService service = new SHUserService();
String validateC = (String)request.getSession().getAttribute("checkCode");
String veryCode = request.getParameter("yanzm");
PrintWriter out = response.getWriter();
try{
double qty = service.login(username, password);
if(qty == -1){
out.print("<script language='javascript'>");
out.println("alert('您输入的帐号或密码错误!');history.back(-2)");
//out.print("window.location.reload();");
out.print("</script>");
}
else{
if(validateC==null||"".equals(veryCode)){
out.print("<script language='javascript'>");
out.println("alert('验证码不能为空!');history.back(-1)");
out.print("</script>");
}else if (validateC.equals(veryCode)) {
HttpSession session = request.getSession();
session.setAttribute("username", username);
session.setAttribute("password", password);
session.setMaxInactiveInterval(600);
response.sendRedirect(request.getContextPath()+"/pages/bksh/index.jsp");
//request.getRequestDispatcher("/page/index.jsp");
}
else {
out.print("<script language='javascript'>");
out.println("alert('验证码错误!');history.back(-1)");
out.print("</script>");
}
out.flush();
out.close();
}
} catch(Exception e){
e.printStackTrace();
}
}
}