一、测试题目
二、完成过程
1.设计思想
①连接mysql数据库
②设计user类,增加参数
③设计add类,向数据库内增加内容
④设计addInput页面,完成录入操作
⑤设计add页面,接收录入的参数,并调用add类函数
2.源代码
user.java
package xihuan;public class User { private String kcmc; private String rkjs; private String skdd; public String getKcmc() { return kcmc; } public void setKcmc(String kcmc) { this.kcmc = kcmc; } public String getRkjs() { return rkjs; } public void setRkjs(String rkjs) { this.rkjs = rkjs; } public String getSkdd() { return skdd; } public void setSkdd(String skdd) { this.skdd = skdd; } }
add.java
package xihuan;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;public class add{ public void add1(User user) { //获得链接对象 Connection connection = DBUtil.getConnection(); //准备sql语句 String sql = "select count(*) from t_user where 'kcmc' = ?"; //创建语句传输对象 PreparedStatement preparedStatement = null; ResultSet resultSet = null; try { preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1, user.getKcmc()); //接收结果集 resultSet = preparedStatement.executeQuery(); //遍历结果集 sql = "insert into t_user(kcmc,rkjs,skdd) value (?,?,?)"; preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1, user.getKcmc()); preparedStatement.setString(2, user.getRkjs()); preparedStatement.setString(3, user.getSkdd()); preparedStatement.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { //关闭资源 DBUtil.close(resultSet); DBUtil.close(preparedStatement); DBUtil.close(connection); } }}
DBUtil.java
package xihuan;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 { //1 加载驱动 Class.forName("com.mysql.jdbc.Driver").newInstance(); } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } String user = "root"; String password = "root"; String url = "jdbc:mysql://localhost:3306/web1?useUnicode=true&characterEncoding=utf-8&useSSL=false"; Connection connection = null; try { //2 创建链接对象connection connection = DriverManager.getConnection(url,user,password); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } return connection; } //关闭资源的方法 public static void close(Connection connection ) { try { if (connection != null) { connection.close(); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void close(PreparedStatement preparedStatement ) { try { if (preparedStatement != null) { preparedStatement.close(); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void close(ResultSet resultSet ) { try { if (resultSet != null) { resultSet.close(); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
UserException
package xihuan;public class UserException extends RuntimeException{ public UserException() { super(); // TODO Auto-generated constructor stub } public UserException(String arg0, Throwable arg1, boolean arg2, boolean arg3) { super(arg0, arg1, arg2, arg3); // TODO Auto-generated constructor stub } public UserException(String arg0, Throwable arg1) { super(arg0, arg1); // TODO Auto-generated constructor stub } public UserException(String arg0) { super(arg0); // TODO Auto-generated constructor stub } public UserException(Throwable arg0) { super(arg0); // TODO Auto-generated constructor stub }}
addInput1.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>用户添加页面
add1.jsp
<%@page import="xihuan.*"%><%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><% //接受客户端传递过来的参数 String kcmc= request.getParameter("kcmc"); String rkjs= request.getParameter("rkjs"); String skdd= request.getParameter("skdd"); String jt= request.getParameter("jt"); User f=new User(); f.setKcmc(kcmc); f.setSkdd(skdd+jt); f.setRkjs(rkjs); add a = new add(); a.add1(f);%> 保存成功
三、结果显示
三、psp0级
1.项目计划总结
时间计划:上课时间10点-10点40,下午2点-3点,晚上6点-7点
内容规划:上午完成最基本的连接录入,下午完成中间的异常情况,晚上撰写博客园总结收获
2.时间记录日志
实际时间:10点开始-10点43,下午1点42-2点24,晚上6点28-7点10,共计约2小时
内容基本完成
3.缺陷记录日志
①界面不美观
②有一些异常处理没有写到,比如录入为空时
四、实验总结
这次实验完成的很顺,因为前一天晚上看了四个多小时关于这方面的操作,主要是中间那部分选择老师和地点的,我没有按照老师的要求,而是做了一个下拉菜单,因为我看课程表都是可以选择的,这样更加方便一些。