2020/10/27

一.

在entity层中

package entity;

public class student {

	private String sid;
    private String sname;
    private String ssex;
    private String sclass;
    private String szy;
    
    public String getSid() {
		return sid;
	}
	public void setSid(String sid) {
		this.sid = sid;
	}
	public String getSsex() {
		return ssex;
	}
	public void setSsex(String ssex) {
		this.ssex = ssex;
	}
	public String getSclass() {
		return sclass;
	}
	public void setSclass(String sclass) {
		this.sclass = sclass;
	}
	public String getSzy() {
		return szy;
	}
	public void setSzy(String szy) {
		this.szy = szy;
	}
	public String getSname() {
		return sname;
	}
	public void setSname(String sname) {
		this.sname = sname;
	}
	@Override
	public String toString() {
		return "student [sid=" + sid + ", sname=" + sname + ", ssex=" + ssex + ", sclass=" + sclass + ", szy=" + szy
				+ "]";
	}
	public student(String sid, String sname, String ssex, String sclass, String szy) {
		super();
		this.sid = sid;
		this.sname = sname;
		this.ssex = ssex;
		this.sclass = sclass;
		this.szy = szy;
	}
	
}

 在这层写get与set

package Dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.sql.ResultSet;
import java.sql.SQLException;

import DBUtil.DBUtil;
import entity.student;
public class Dao {

}

 在dao层写sql的语句

二. dao中的一些语句还不太会使用

三.web