Judgelogin.java

标签：客户端浏览器   man   rate   cat   exe   getc   string   port   encode   

package bookManage;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Response;

/**
* Servlet implementation class Judgelogin
*/
@WebServlet("/Judgelogin")
public class Judgelogin extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public Judgelogin() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/

SqlHelper sh;
Connection conn=null;
PreparedStatement psmt=null;
ResultSet rs=null;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.setCharacterEncoding("UTF-8");//设置将字符以"UTF-8"编码输出到客户端浏览器
String username = new String((request.getParameter("username")).getBytes("ISO-8859-1"),"UTF-8");
String pwd = new String((request.getParameter("password")).getBytes("ISO-8859-1"),"UTF-8");
System.out.println("username "+username);
System.out.println("pwd "+pwd);

conn=sh.getConnect();
String sql="SELECT * FROM dbo.fm_userinfo WHERE name=‘"+username+"‘ AND pwd=‘"+pwd+"‘";
try {
psmt=conn.prepareStatement(sql);
psmt.setString(1, username);
psmt.setString(2, pwd);
rs=psmt.executeQuery();
while(rs.next()) {
RequestDispatcher dispatcher = request.getRequestDispatcher("index.jsp?username="+username+"");
dispatcher .forward(request, response);
}
} catch (SQLException e) {
e.printStackTrace();
}


}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}

}

Judgelogin.java

标签：客户端浏览器   man   rate   cat   exe   getc   string   port   encode   

原文地址：https://www.cnblogs.com/yachao1120/p/8868451.html