server.java
来自「是一个利用AJAX Mysql Java 编写的聊天室系统 主要功能都实现了聊天」· Java 代码 · 共 133 行
JAVA
133 行
package Service;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.List;
import java.util.Vector;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class server extends HttpServlet {
/**
* Constructor of the object.
*/
public server() {
super();
}
/**
* 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");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* 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 {
request.setCharacterEncoding("gb2312"); //设置request的读入字符集
response.setContentType("text/html;charset=gb2312");//设置输出格式及字符集
PrintWriter out = response.getWriter();
String loginname = request.getParameter("loginname");
String password = request.getParameter("password");
out.println(loginname+password);
try{
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost:3306/chat";
String user = "root";
String pwd = "123456";
Connection con;
Statement sta;
ResultSet rs = null;
Class.forName(driver);
con = DriverManager.getConnection(url,user,pwd);
sta =con.createStatement();
rs=sta.executeQuery("select teacherid from teacherinfo where loginname='"+loginname+"' and password='"+password+"'");
//System.out.println("hello");
// rs=sta.executeQuery("select * from teacherinfo ");
if (rs.next()){ System.out.println(rs.getString("teacherid"));
String s=rs.getString("teacherid");
int i=Integer.parseInt(rs.getString("teacherid"));
sta.executeUpdate("update teacherinfo set online=1 where teacherid ='"+i+"' ");
response.sendRedirect("/ServiceChat/ServiceChat.jsp?teacheridlogin="+i+"");
//request.getRequestDispatcher("/ServiceChatTeacher.jsp").include(request, response);
} else{out.println("Erro! Please input again!");
request.getRequestDispatcher("/login.jsp").include(request, response);}
/*int i=Integer.parseInt(rs.getString("teacherid"));
if(i!=0){
sta.executeUpdate("update teacherinfo set online=1 where id ='"+i+"' ");
response.sendRedirect("/ServiceChat.html");}
else{request.getRequestDispatcher("/login.jsp").include(request, response);}*/
// sta.executeUpdate("insert into chatmessage(name,company,partment,tel,email) values ('"+name+"','"+company+"','"+partment+"','"+tel+"','"+email+"')");
}catch(Exception e){e.printStackTrace();}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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