每日日报2021.1.28

标签：nts   sed   static   his   数据库   nec   import   每日   cat   

今天完成内容：

开发家庭小账本

1.编写代码

package com.edu.entity;

import java.util.Date;

public class User {
private int id;
private String username;
private String userused;
private String usermoney;
private Date usedate;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUserused() {
return userused;
}
public void setUserused(String userused) {
this.userused = userused;
}
public String getUsermoney() {
return usermoney;
}
public void setUsermoney(String usermoney) {
this.usermoney = usermoney;
}
public Date getUsedate() {
return usedate;
}
public void setUsedate(Date usedate) {
this.usedate = usedate;
}
public User(int id, String username, String userused, String usermoney, Date usedate) {
super();
this.id = id;
this.username = username;
this.userused = userused;
this.usermoney = usermoney;
this.usedate = usedate;
}
public User() {
}

}

package com.edu.entity;

import java.sql.Connection;

import java.sql.DriverManager;

public class DbHelper {

private static String url = "jdbc:mysql://localhost:3306/countuser"; // 数据库地址

private static String userName = "root"; // 数据库用户名

private static String passWord = "123456"; // 数据库密码

private static Connection conn = null;

private DbHelper() {

}

public static Connection getConnection() {

if (null == conn) {

try {

Class.forName("com.mysql.jdbc.Driver");

conn = DriverManager.getConnection(url, userName, passWord);

} catch (Exception e) {

e.printStackTrace();

}

}

return conn;

}

public static void main(String[] args) { // 测试数据库是否连通

System.err.println(getConnection());

}

}

遇到问题：

无

明日目标：

学习Android studio的开发

每日日报2021.1.28

标签：nts   sed   static   his   数据库   nec   import   每日   cat   

原文地址：https://www.cnblogs.com/leiyu1905/p/14905609.html