package myservlet;
import java.io.IOException;
import javax.servlet.ServletConfig;
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 mybean.*;
import java.sql.*;
import java.io.*;
import javax.servlet.http.*;
import javax.servlet.*;
/**
-
Servlet implementation class HandleRegister
*/
@WebServlet("/HandleRegister")
public class HandleRegister extends HttpServlet {
private static final long serialVersionUID = 1L;/**
- @see HttpServlet#HttpServlet() */ public HandleRegister() { super(); // TODO Auto-generated constructor stub }
/**
- @see Servlet#init(ServletConfig) / public void init(ServletConfig config) throws ServletException { // TODO Auto-generated method stub super.init(config); //加载jdbc数据库驱动程序 try { Class.forName("com.mysql.jdbc.Driver"); } catch(Exception e) {} } /*
-
@see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
response.setCharacterEncoding("UTF-8");
Connection con;
PreparedStatement sql;
Register reg=new Register();
request.setAttribute("register", reg);
String logname=request.getParameter("logname").trim(),
password=request.getParameter("password").trim(),
email=request.getParameter("email").trim();
if(logname==null)
logname="";
if(password==null)
password="";
if(email==null)
email="";
boolean isLD=true;boolean boo=logname.length()>0&&password.length()>0&&isLD;
String backNews="";
try {
String uri="jdbc:mysql://localhost:3306/test?"+
"user=root&password=pader&charset=UTF-8";
//建立与指定数据库test的连接对象con
con=DriverManager.getConnection(uri);
String insertCondition="INSERT INTO member VALUES(?,?,?)";
//利用con对象调用preparstatement方法生成执行sql语句对象
sql=con.prepareStatement(insertCondition);
if(boo) {
sql.setString(1, logname);//利用sql对象调用set方法设置？代表的具体值
sql.setString(2, password);
sql.setString(3, email);
//数据库操作对象sql调用executeupdate()方法并返回成功的记录条数
int m=sql.executeUpdate();
if(m!=0)
{
backNews="注册成功";reg.setBackNews(backNews);reg.setLogname(logname);reg.setPassword(password);reg.setEmail(email);
}
}
else {backNews="信息不完整或名字中存在非法字符"; reg.setBackNews(backNews);}
//释放资源
sql.close();
con.close();
}
catch(SQLException exp) {
backNews="该名字已被使用，请您更换名字"+exp;
reg.setBackNews(backNews);
}
RequestDispatcher dispatcher=request.getRequestDispatcher("show.jsp");//转发
dispatcher.forward(request, response);
}
/**
- @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);
}
}
