JDBC实现学生管理系统

本文实例为大家分享了jdbc实现学生管理系统的具体代码，供大家参考，具体内容如下

1、学生类

package manage;
 
import java.util.date;
 
/**
 * @author fanxf
 * @since 2018/4/27 17:01
 */
public class student {
 
  private int id;
 
  private int age;
 
  private string sex;
 
  private string name;
 
  private date datecreated;
 
  public int getid() {
    return id;
  }
 
  public void setid(int id) {
    this.id = id;
  }
 
  public int getage() {
    return age;
  }
 
  public void setage(int age) {
    this.age = age;
  }
 
  public string getsex() {
    return sex;
  }
 
  public void setsex(string sex) {
    this.sex = sex;
  }
 
  public string getname() {
    return name;
  }
 
  public void setname(string name) {
    this.name = name;
  }
 
  public date getdatecreated() {
    return datecreated;
  }
 
  public void setdatecreated(date datecreated) {
    this.datecreated = datecreated;
  }
 
  public student() {
  }
 
  public student(int age, string sex, string name) {
    this.age = age;
    this.sex = sex;
    this.name = name;
  }
 
  public student(int id, int age, string sex, string name) {
    this.id = id;
    this.age = age;
    this.sex = sex;
    this.name = name;
  }
 
  @override
  public string tostring() {
    return "student{" +
        "id=" + id +
        ", age=" + age +
        ", sex='" + sex + '\'' +
        ", name='" + name + '\'' +
        ", datecreated=" + datecreated +
        '}';
  }
}

2、jdbc工具类

package manage;
 
import java.io.ioexception;
import java.sql.*;
import java.util.properties;
 
/**
 * @author fanxf
 * @since 2018/4/27 11:06
 */
//数据库的工具类
public class jdbcutils {
 
  private static string driver = "";
  private static string url = "";
  private static string user = "";
  private static string password = "";
 
  static {
    properties p = new properties();
    try {
      p.load(thread.currentthread().getcontextclassloader().getresourceasstream("db.properties"));
    } catch (ioexception e) {
      e.printstacktrace();
    }
    driver = p.getproperty("driver");
    url = p.getproperty("url");
    user = p.getproperty("user");
    password = p.getproperty("password");
    try {
      class.forname(driver);
    } catch (classnotfoundexception e) {
      e.printstacktrace();
    }
  }
 
  public static connection getconnection() {
    try {
      return drivermanager.getconnection(url, user, password);
    } catch (sqlexception e) {
      e.printstacktrace();
    }
    return null;
  }
  //释放的时候要从小到大释放
  //connection -> statement --> resultset
 
 
  public static void release(resultset rs, statement stmt, connection conn) {
    if (rs != null) {
      try {
        rs.close();
      } catch (sqlexception e) {
        e.printstacktrace();
      }
    }
    if (stmt != null) {
      try {
        stmt.close();
      } catch (sqlexception e) {
        e.printstacktrace();
      }
    }
 
    if (conn != null) {
      try {
        conn.close();
      } catch (sqlexception e) {
        e.printstacktrace();
      }
    }
  }
}

3、代码

package manage;
 
import java.sql.connection;
import java.sql.preparedstatement;
import java.sql.resultset;
import java.sql.sqlexception;
import java.util.scanner;
 
/**
 * @author fanxf
 * @since 2018/4/27 17:06
 */
public class managesystem {
 
  private static connection conn = null;
  private static preparedstatement ps = null;
  private static resultset rs = null;
 
  /**
   * 添加学生数据
   *
   * @param student
   * @return
   */
  public static int addstudent(student student) {
    conn = jdbcutils.getconnection();
    int result = 0;
    try {
      ps = conn.preparestatement("insert into student (age, sex, `name`, datecreated) values (?, ?, ?, now())");
      ps.setint(1, student.getage()); //设置第一个参数
      ps.setstring(2, student.getsex()); //设置第二个参数
      ps.setstring(3, student.getname()); //设置第三个参数
      result = ps.executeupdate();
    } catch (sqlexception e) {
      e.printstacktrace();
    } finally {
      jdbcutils.release(null, ps, conn); //关闭连接
    }
    return result;
  }
 
  public void add() {
    scanner scan = new scanner(system.in);
    system.out.println("请输入学生年龄");
    int age = scan.nextint();
    system.out.println("请输入学生性别");
    string sex = scan.next();
    system.out.println("请输入学生姓名");
    string name = scan.next();
    student s = new student(age, sex, name);
    int flag = addstudent(s);
    if (flag > 0) {
      system.out.println("添加成功");
    } else {
      system.out.println("添加失败");
    }
  }
 
  /**
   * 修改
   *
   * @param student
   * @return
   */
  public static int updatestudent(student student) {
    conn = jdbcutils.getconnection();
    int result = 0;
    try {
      ps = conn.preparestatement("update student set age = ?, sex = ?, `name` = ? where id = ?");
      ps.setint(1, student.getage()); //设置第一个参数
      ps.setstring(2, student.getsex()); //设置第二个参数
      ps.setstring(3, student.getname()); //设置第三个参数
      ps.setint(4, student.getid());
      result = ps.executeupdate();
    } catch (sqlexception e) {
      e.printstacktrace();
    } finally {
      jdbcutils.release(null, ps, conn); //关闭连接
    }
    return result;
  }
 
  public void update() {
    scanner scan = new scanner(system.in);
    system.out.println("请输入学生id");
    int id = scan.nextint();
    system.out.println("请输入学生年龄");
    int age = scan.nextint();
    system.out.println("请输入学生性别");
    string sex = scan.next();
    system.out.println("请输入学生姓名");
    string name = scan.next();
    student s = new student(id, age, sex, name);
    int flag = updatestudent(s);
    if (flag > 0) {
      system.out.println("更新成功");
    } else {
      system.out.println("更新失败");
    }
  }
 
  /**
   * 删除
   *
   * @param id
   * @return
   */
  public static int deletestudent(int id) {
    conn = jdbcutils.getconnection();
    int result = 0;
    try {
      ps = conn.preparestatement("delete from student where id = ?");
      ps.setint(1, id); //设置第一个参数
      result = ps.executeupdate();
    } catch (sqlexception e) {
      e.printstacktrace();
    } finally {
      jdbcutils.release(null, ps, conn); //关闭连接
    }
    return result;
  }
 
  public void delete() {
    scanner scan = new scanner(system.in);
    system.out.println("请输入学生id");
    int id = scan.nextint();
    int flag = deletestudent(id);
    if (flag > 0) {
      system.out.println("删除成功");
    } else {
      system.out.println("删除失败");
    }
  }
 
  public static void main(string[] args) {
    system.out.println("************ 欢迎进入学生管理系统 *************");
    managesystem ms = new managesystem();
    boolean b = true;
    while (b) {
      system.out.println("你想进行以下哪项操作");
      system.out.println("1、添加学生  2、更新学生数据  3、学生信息查询  4、删除学生 0、退出");
      scanner scan = new scanner(system.in);
      int i = scan.nextint();
      switch (i) {
        case 1:
          ms.add();
          break;
        case 2:
          ms.update();
          break;
        case 3:
          system.out.println();
          break;
        case 4:
          ms.delete();
          break;
        default:
          system.out.println("没有该操作选项,请重新来过！");
          main(args);
          break;
      }
    }
  }
}

4、properties数据库文件自己配置

数据库字段根据学生类建立！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。