java连接mysql插入数据操作

package impl;

import java.sql.PreparedStatement;
import java.sql.SQLException;

import db.DBConnection;

import entity.Student;

public class StudentImpl {
	
	public String  joinString(String[] slikes){
		String joinslikes="";
		for(String temp:slikes){
			joinslikes+=temp+"-";
		}
		System.out.println(joinslikes.substring(0, joinslikes.length()-1));
		return joinslikes.substring(0, joinslikes.length()-1);
	}
	
	public void saveStudent(Student student) throws Exception {
		// 连接数据库，完成数据的录入操作
		//System.out.println("---saveStudent---");
		DBConnection db=new DBConnection();
		String sql="insert into student (sname,slikes,saddress) values (?,?,?)";
		try {
			PreparedStatement preStmt=db.getConn().prepareStatement(sql);
			preStmt.setString(1, student.getSname());
			preStmt.setString(2, student.getSlikes());
			preStmt.setString(3, student.getSaddress());
			
			preStmt.executeUpdate();
			
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
}