2020.12.7收获

志愿者信息管理系统

entity->Course.java

package entity;

public class Course {

    private int id;
    private String name;
    private String sex;
    private String minzu;
    private String time;
    private String age;
    private String mianmao;
    private String fuwu;

    public Course() {}
    
    public Course(int id, String name, String sex, String minzu,String time,String age,String mianmao,String fuwu) {
        this.setId(id);
        this.setName(name);
        this.setSex(sex);
        this.setMinzu(minzu);
        this.setTime(time);
        this.setAge(age);
        this.setMianmao(mianmao);
        this.setFuwu(fuwu);
    }
    
    public Course(String name, String sex, String minzu,String time,String age,String mianmao,String fuwu) {
        this.setName(name);
        this.setSex(sex);
        this.setMinzu(minzu);
        this.setTime(time);
        this.setAge(age);
        this.setMianmao(mianmao);
        this.setFuwu(fuwu);
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getMinzu() {
        return minzu;
    }

    public void setMinzu(String minzu) {
        this.minzu = minzu;
    }
    public String getTime() {
        return time;
    }

    public void setTime(String time) {
        this.time = time;
    }
    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }
    public String getMianmao() {
        return mianmao;
    }

    public void setMianmao(String mianmao) {
        this.mianmao = mianmao;
    }
    public String getFuwu() {
        return fuwu;
    }

    public void setFuwu(String fuwu) {
        this.fuwu = fuwu;
    }
}

util->DBUtil.java

package util;

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


public class DBUtil {
    
    public static String db_url = "jdbc:mysql://localhost:3306/trycurd?useSSL=false&characterEncoding=UTF-8";
    public static String db_user = "root";
    public static String db_pass = "20183641";
    
    public static Connection getConn () {
        Connection conn = null;
        
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(db_url, db_user, db_pass);
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return 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();
            }
        }
    }

}