javaweb 测试

时间：2019-10-21 23:35:22 阅读：148 评论：0 收藏：0 [点我收藏+]

题目要求：

1登录账号：要求由6到12位字母、数字、下划线组成，只有字母可以开头；（1分）

2登录密码：要求显示“• ”或“*”表示输入位数，密码要求八位以上字母、数字组成。（1分）

3性别：要求用单选框或下拉框实现，选项只有“男”或“女”；（1分）

4学号：要求八位数字组成，前四位为“2018”开头，输入自己学号；（1分）

5姓名：输入自己的姓名；

5电子邮箱：要求判断正确格式xxxx@xxxx.xxxx；（1分）

6点击“添加”按钮，将学生个人信息存储到数据库中。（3分）

7可以演示连接上数据库。（2分）

代码：

1连接数据库

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* 数据库连接工具
* @author Hu
*
*/
public class DBUtil {

public static String db_url = "jdbc:mysql://localhost:3306/zzm?useSSL=false";
public static String db_user = "root";
public static String db_pass = "123456";

public static Connection getConn () {
  Connection conn = null;

  try {
   Class.forName("com.mysql.jdbc.Driver");//加载驱动
   conn = DriverManager.getConnection(db_url, db_user, db_pass);
  } catch (Exception e) {
   e.printStackTrace();
  }

  return conn;
}

/**
* 关闭连接
* @param state
* @param conn
*/
public static void close (Statement state, Connection conn) {
  if (state != null) {
   try {
    state.close();
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }

  if (conn != null) {
   try {
    conn.close();
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }
}

public static void close (ResultSet rs, Statement state, Connection conn) {
  if (rs != null) {
   try {
    rs.close();
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }

  if (state != null) {
   try {
    state.close();
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }

  if (conn != null) {
   try {
    conn.close();
   } catch (SQLException e) {
    e.printStackTrace();
   }
  }
}

}

2创建变量

package lzx;

public class Lzx {
private int id;
private String zhanghao;
private String password;
private String sex;
private String number;
private String name;
private String mail;
private String xueyuan;
private String zhuanye;
private String banji;
private String year;
private String shengyuandi;
private String beizhu;
public int getId()
{
  return id;
}
public void setId()
{
  this.id=id;
}
public String getZhanghao()
{
  return zhanghao;
}
public void setZhanghao()
{
  this.zhanghao=zhanghao;
}
public String getPassword()
{
  return password;
}
public void setPassword()
{
  this.password=password;
}
public String getSex()
{
  return sex;
}
public void setSex()
{
  this.sex=sex;
}
public String getName()
{
  return name;
}
public void setName()
{
  this.name=name;
}
public String getMail()
{
  return mail;
}
public void setMail()
{
  this.mail=mail;
}
public String getNumber()
{
  return number;
}
public void setNumber()
{
  this.number=number;
}
public String getXueyuan()
{
  return xueyuan;
}
public void setXueyuan()
{
  this.xueyuan=xueyuan;
}
public String getZhuanye()
{
  return zhuanye;
}
public void setZhuanye()
{
  this.zhuanye=zhuanye;
}
public String getBanji()
{
  return banji;
}
public void setBanji()
{
  this.banji=banji;
}
public String getYear()
{
  return year;
}
public void setYear()
{
  this.year=year;
}
public String getShengyuandi()
{
  return shengyuandi;
}
public void setShengyuandi()
{
  this.shengyuandi=shengyuandi;
}
public String getBeizhu()
{
  return beizhu;
}
public void setBeizhu()
{
  this.beizhu=beizhu;
}
public Lzx() {}
public Lzx(int id,String zhanghao,String password,String sex,String name,String number,String mail,String xueyuan,String zhuanye,String banji,String year,String shengyuandi,String beizhu)
{
  this.id=id;
  this.zhanghao = zhanghao;
  this.password = password;
  this.name = name;
  this.sex = sex;
  this.number =number;
  this.name = name;
  this.mail = mail;
  this.xueyuan = xueyuan;
  this.zhuanye = zhuanye;
  this.banji = banji;
  this.year = year;
  this.shengyuandi = shengyuandi;
  this.beizhu = beizhu;
}
public Lzx(String zhanghao, String password,String sex, String name,String number,String mail,String xueyuan,String zhuanye,String banji,String year,String shengyuandi,String beizhu)
{
  this.zhanghao = zhanghao;
  this.password = password;
  this.name = name;
  this.sex = sex;
  this.number = number;
  this.mail = mail;
  this.xueyuan = xueyuan;
  this.zhuanye = zhuanye;
  this.banji = banji;
  this.year = year;
  this.shengyuandi = shengyuandi;
  this.beizhu = beizhu;
}
}

package lzx;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

/**
*
* Dao层操作数据
* @author Zhao
*
*/
public class lzxDao {

/**
* 添加
* @param zzm
* @return
*/
public boolean add(Lzx zzm) {
  String sql = "insert into zzm(zhanghao,password,sex,name,number,mail,xueyuan,zhuanye,banji,year,shengyuandi,beizhu) values(‘" + zzm.getZhanghao() + "‘,‘" + zzm.getPassword() + "‘,‘" + zzm.getSex() + "‘,‘"+zzm.getName()+"‘,‘" + zzm.getNumber() + "‘,‘" + zzm.getMail()+"‘,‘"+zzm.getXueyuan()+"‘,‘"+zzm.getZhuanye()+"‘,‘"+zzm.getBanji() +"‘,‘"+zzm.getYear()+"‘,‘"+zzm.getShengyuandi()+"‘,‘"+zzm.getBeizhu() +"‘)";
  Connection conn = DBUtil.getConn();
  Statement state = null;
  boolean f = false;
  int a = 0;

  try {
   state = conn.createStatement();
   state.executeUpdate(sql);
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   DBUtil.close(state, conn);
  }

  if (a > 0) {
   f = true;
  }
  return f;
}

public boolean zhanghao(String zhanghao) {
// TODO Auto-generated method stub
return false;
}

}

package lzx;

import java.util.List;
/**
* ZzmService
* 服务层
* @author Zhao
*
*/
public class LzxService {

lzxDao cDao = new lzxDao();

/**
* 添加
* @param Zzm
* @return
*/
public boolean add(Lzx zzm) {
  boolean f = false;
  if(!cDao.zhanghao(zzm.getZhanghao())) {
   cDao.add(zzm);
   f = true;
  }
  return f;
}

}

package lzx;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/LzxServlet")
public class LzxServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

LzxService service = new LzxService();

protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  req.setCharacterEncoding("utf-8");
  String method = req.getParameter("method");
  if ("add".equals(method)) {
   add(req, resp);
  }
}

/**
* 添加
* @param req
* @param resp
* @throws IOException
* @throws ServletException
*/
private void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
  req.setCharacterEncoding("utf-8");
  String zhanghao = req.getParameter("zhanghao");
  String password = req.getParameter("password");
  String sex = req.getParameter("sex");
  String number = req.getParameter("number");
  String name = req.getParameter("name");
  String mail = req.getParameter("mail");
  String xueyuan = req.getParameter("xueyuan");
  String zhuanye = req.getParameter("zhuanye");
  String banji = req.getParameter("banji");
  String year = req.getParameter("year");
  String shengyuandi = req.getParameter("shengyuandi");
  String beizhu = req.getParameter("beizhu");
  Lzx zzm= new Lzx(zhanghao,password,sex,name,number,mail,xueyuan,zhuanye,banji,year,shengyuandi,beizhu);

  //添加后消息显示
  if(service.add(zzm)) {
   req.setAttribute("message", "添加成功");
   req.getRequestDispatcher("zzm.jsp").forward(req,resp);
  } else {
   req.setAttribute("message", "用户名重复，请重新输入");
   req.getRequestDispatcher("zzm.jsp").forward(req,resp);
  }
}

}

6写页面

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>

</head>
<body>
<%
      Object message = request.getAttribute("message");
      if(message!=null && !"".equals(message)){

%>
      <script type="text/javascript">
           alert("<%=request.getAttribute("message")%>");
      </script>
<%} %>
<div align="center">
<form action="LzxServlet?method=add" method="post" onsubmit="return check()">

   <tr height="50" align="center" bgcolor="#FFFFCC">
   <td width="400"><button type="submit" >添加<button></td>
   <td width="400"><input type="reset" value="重新输入" /></td>
   </tr>

</form>
</div>
<script type="text/javascript">
function check() {
var zhanghao = document.getElementById("zhanghao");
var password = document.getElementById("password");
var number = document.getElementById("number");
var mail = document.getElementById("mail");

if (!zhanghao.value.match(/^[a-zA-Z]\w{5,11}$/)) {

alert("用户名由六到十二英文字符和数字组成，以英文字母开头");

num.focus();

return false;

}

else if (!password.value.match(/^[A-Za-z0-9]\w{7,20}$/)) {

alert(" 密码由八位以上英文和数字组成");

mima.focus();

return false;

}
else if(number.value<"20180000"|| number.value>"20189999")
  {
   alert(" 学号由2018开头的八位组成");
         number.focus();

return false;
}

else if (!mail.value.match(/^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$/)) {

alert(" 邮箱格式错误");

mail.focus();

return false;

}

}
</script>
</body>
</html>

javaweb 测试

原文：https://www.cnblogs.com/--lzx1--/p/11716744.html

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