课程 教师 教室

Posted 2020-10-16 格式化。

1. 设计思想

定义三个信息，连接数据库，输入用户信息。

1. 源程序代码
截图

package bean;

public class Ms {
    String classname;
    String place;
    String teacher;
    public String getClassname() {
        return classname;
    }
    public void setClassname(String classname) {
        this.classname = classname;
    }
    public String getPlace() {
        return place;
    }
    public void setPlace(String place) {
        this.place = place;
    }
    public String getTeacher() {
        return teacher;
    }
    public void setTeacher(String teacher) {
        this.teacher = teacher;
    }
    

}

View Code

package dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import bean.Ms;
import util.DButil;

public class classMs {
    
    public void add(Ms  ms)
    {
        //获得链接对象
                Connection connection = DButil.getConnection();
                //创建语句传输对象
                PreparedStatement preparedStatement = null;
                try {
                
                    
                    String sql = "insert into kc_msg (classname,teacher,place) value (?,?,?)";
                    preparedStatement = connection.prepareStatement(sql);
                    preparedStatement.setString(1, ms.getClassname());
                    preparedStatement.setString(2,ms.getTeacher());
                    preparedStatement.setString(3,ms.getPlace());
                    
                    preparedStatement.executeUpdate();
                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }finally {
                    //关闭资源
                    DButil.close(connection);
                }
        
    }
    
    
    

}

package util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DButil {
    public static Connection getConnection()
    {
        try {
            Class.forName("com.mysql.jdbc.Driver").newInstance();
        } catch (InstantiationException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
        String user="root";
        String password="root";
        String url = "jdbc:mysql://localhost:3306/jaovo_msg";
        Connection connection=null;
        try {
            connection=DriverManager.getConnection(url,user,password);
        } catch (SQLException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
        
        return connection;
    }
    
    public static void close(Connection connection)
    {
        try {
            connection.close();
        } catch (SQLException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
    }
    public static void close(PreparedStatement preparedStatement)
    {
        try {
            preparedStatement.close();
        } catch (SQLException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
    }
    public static void close(ResultSet resultSet)
    {
        try {
            resultSet.close();
        } catch (SQLException e) {
            // TODO 自动生成的 catch 块
            e.printStackTrace();
        }
    }

}

package util;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

public class Exception {
    
    public static  boolean validateNull(HttpServletRequest request,String[] fileds) {
    
        boolean validate = true;
        //map对象用来装载不同的错误信息
        Map<String,String> errorMsg = new  HashMap();
        for(String filed :fileds) {
            String value = request.getParameter(filed);
            if (value == null || "".equals(value.trim())) {
                validate = false;
                errorMsg.put(filed, "不能为空！");
            }
            if (!validate) {
                request.setAttribute("errormsg", errorMsg);
            }
            
        }
        
        return validate;
    }
    public static String showError(HttpServletRequest request , String filed) {
        Map<String, String> errorMsg = (Map<String,String>)request.getAttribute("errormsg");
        if (errorMsg == null) {
            return "";
        }
        String msg = errorMsg.get(filed);
        if (msg == null) {
            return "";
        }
        return msg;
    }

}

View Code

<%@page import="java.util.Map"%>
<%@page import="util.Exception"%>
<%@ 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>添加课程</title>
</head>
<body>
<%Map<String,String> errorMs = (Map<String,String>)request.getAttribute("errorms"); 
%>
<form  action="saveInput.jsp" method="get">

<br>
<center > 课程名称:<input  type="text"  name="classname" /><%= Exception.showError(request, "classname") %></center>

<br>
<center > 任课教师:<input  type="text"  name="teacher" /><%= Exception.showError(request, "teacher") %></center>

<br>
<center > 上课地点:<input  type="text"  name="place" /><%= Exception.showError(request, "place") %></center>

<br>
<center><input type="submit" value="保存"  /> </center>
</form>

</body>
</html>

View Code

<%@page import="util.Exception"%>
<%@page import="bean.Ms"%>
<%@page import="dao.classMs"%>
<%@ 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>添加课程</title>
</head>
<body>
<%
    //接收客户端传递过来的参数
    String classname = request.getParameter("classname");
    String teacher = request.getParameter("teacher");
    String place = request.getParameter("place");
    
    boolean validate = Exception.validateNull(request, new String[]{"classname","teacher","place"});
    if(!validate){
    
%>
<jsp:forward page="save.jsp"></jsp:forward>
<%
    }
    if(!place.startsWith("基教")&&!place.startsWith("一教")&&!place.startsWith("二教")&&!place.startsWith("三教"))
    {
        %>
        <script language=‘javascript‘ > alert(‘没有这个教室\n请重新输入！‘);window.history.back(-1);</script>
        <% 
    }
    else if(!teacher.equals("王建民")&&!teacher.equals("刘立嘉")&&!teacher.equals("刘丹"))
    {
        %>
        <script language=‘javaScript‘ > alert(‘没有这个老师！\n请重新输入‘);window.history.back(-1);</script>
        <% 
    }
    else
    {
           Ms msg=new Ms();
           msg.setClassname(classname);
           msg.setTeacher(teacher);
           msg.setPlace(place);
           classMs cm=new classMs();
           cm.add(msg);    
    }    
    %>
    <center>保存成功!!<br></center>
    <center><a href="save.jsp">继续添加</a></center>
</body>
</html>

View Code

1. 项目计划日历

时间	课堂测试	编写程序	总计
上午	50分钟		50分钟
下午		2个小时	120分钟

时间记录日历

日期	开始时间	中断时间	净时间	活动	备注
11.28
上午	9：00	9：50	50	编程	课堂测试
下午	1：00	3：00	120	编程	编程

 

缺陷记录日志

日期	编号	类型	引入阶段	排除阶段	修复时间	修复缺陷
11.28	1				5分钟
	描述：无法传入数据库。
	2				10分钟
	描述：界面跳转不正确。