zoukankan html css js c++ java

1204整理

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户注册</title>
<script type="text/javascript">

//判断注册时输入的用户信息是否为空
function check()
{
    var uid = document.getElementById("userid");
    if (uid.value == "")
        {
        alert("用户代码不能为空");
        
        return false;
    
        }
    if(uform.password.value == "")
        {
         alert("密码不能为空");
        
        return false;
        }
    if(uform.password.value != uform.queren.value)
        {
         alert("两次输入密码不一致");
    
         return false;
        }
    return true;
    }
</script>
</head>
<body>


<form id="uform" action="SaveUser" onSubmit="return check()">

用户代码：<input id="userid" type="text" name="userid" width=30/>
<br>
用户名称：<input id="username" type="text" name="username" width=30/>
<br>
登录密码：<input id="password" type="password" name="password" width=30/>
<br>
确认密码：<input id="queren" type="password" name="queren" width=30/>
<br>
<input type="submit" value="提交"/>

</form>
</body>
</html>

package com.hanqi;

import java.io.IOException;

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 java.sql.*;
/**
 * Servlet implementation class saveUser
 */
@WebServlet("/SaveUser")
public class SaveUser extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public SaveUser() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
        request.setCharacterEncoding("UTF-8");
            
        response.setContentType("text/html; charset=UTF-8");
        
        String userid =  request.getParameter("userid");

        String username =  request.getParameter("username");

        String pw =  request.getParameter("password");
        
        if(userid == null ||userid.trim().length() == 0)
        {
            response.getWriter().append("用户ID不能为空");
        }
        else if(username == null ||username.trim().length() == 0)
        {
            response.getWriter().append("用户名称不能为空");    
        }
        else
        {
            try 
            {
                Class.forName("oracle.jdbc.driver.OracleDriver");
                
                String url = "jdbc:oracle:thin:@localhost:1521:ORCL" ;
                
                Connection conn = DriverManager.getConnection(url, "test2", "1234");
                
                if(conn != null)
                {
                    //操作数据库
                    String sql = "insert into t_user (user_id,user_name,password) values(?,?,?)" ;
                    
                    // 执行SQL语句的类
                    PreparedStatement pps = conn.prepareStatement(sql);
                    
                    username = new String(username.getBytes("ISO-8859-1"),"UTF-8");
                    
                    pps.setString(1, userid);
                    pps.setString(2, username);
                    pps.setString(3, pw);
                    
                    int row = pps.executeUpdate();//执行SQL语句并返回数据行数
                    
                    if(row > 0)
                    {
                        response.getWriter().append("保存"+row+"条数据成功");
                    }
                    else
                    {
                        response.getWriter().append("保存数据失败");
                    }
                    
                    //释放资源
                    
                    pps.close();
                    
                    conn.close();
                }
                else
                {
                    response.getWriter().append("连接数据库失败");
                }
            }
            catch (Exception e) 
            {
                e.printStackTrace();
                
                response.getWriter().append(e.getMessage());
            }
        }

        
        response.getWriter().append("Served at: ").append(request.getContextPath());
    }

    /**
     * @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);
    }

}

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原文地址：https://www.cnblogs.com/zxw0004/p/5020780.html