java面向对象添加数据库SQL

面向对象操作  封装   重写to string方法 空参构造方法

package SQL.work1;
//面向对象操作
public class pojo {
    private String stusum;
    private String stuname;
    private String studate;
    private String stuaddres;
    public pojo() {
    }
    public String getStusum() {
        return stusum;
    }
    public void setStusum(String stusum) {
        this.stusum = stusum;
    }
    public String getStuname() {
        return stuname;
    }
    public void setStuname(String stuname) {
        this.stuname = stuname;
    }
    public String getStudate() {
        return studate;
    }
    public void setStudate(String studate) {
        this.studate = studate;
    }
    public String getStuaddres() {
        return stuaddres;
    }
    public void setStuaddres(String stuaddres) {
        this.stuaddres = stuaddres;
    }
    @Override
    public String toString() {
        return "pojo{" +
                "stusum='" + stusum + '\'' +
                ", stuname='" + stuname + '\'' +
                ", studate='" + studate + '\'' +
                ", stuaddres='" + stuaddres + '\'' +
                '}';
    }
}

 

写入SQL

package SQL.work1;

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

public class Mxdx {
    public static void main(String []args) throws SQLException, ClassNotFoundException {
        Mxdx mx=new Mxdx();
        mx.zeng();
    }
    public void zeng() throws ClassNotFoundException, SQLException {
        pojo po = new pojo();
        po.setStusum("js1");
        po.setStuname("小红");
        po.setStudate("2008-8-2");
        po.setStuaddres("山西");
        Class.forName("com.mysql.jdbc.Driver");
        //String sql = "INSERT INTO student VALUES ('j05','陈七','2018-08-03','地狱');";
        String sql = "INSERT INTO student  VALUES (?,?,?,?);";
        Connection con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/mydata", "root", "root");
        // 执行增删改除
        PreparedStatement pre = con.prepareStatement(sql);
       /* pre.setObject(1,"j05");
        pre.setObject(2,"陈七");
        pre.setObject(3,"2018-8-03");
        pre.setObject(4,"地狱");*/
        pre.setObject(1,po.getStusum());
        pre.setObject(2,po.getStuname());
        pre.setObject(3,po.getStudate());
        pre.setObject(4,po.getStuaddres());
        //executeUpdate();  执行增删改语句  返回值为int类型   成功为1   失败为0；
        int i = pre.executeUpdate();
        if (i == 1) {
            System.out.println("添加成功！");
        } else {
            System.out.println("添加失败！");
        }
        pre.close();
        con.close();
    }
}