MySQL操作类（本人自己写的）

package com.test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Vector;
public class DBUtil {
    
    //定义连接数据库需要的
    Connection ct=null;
    PreparedStatement pS=null;
    ResultSet rS=null;
    private static String url = "jdbc:mysql://"+DBSomeType.MYSQLURL+":3306/weixin?characterEncoding=UTF-8&autoReconnect=true";
    private static String driverName = "com.mysql.jdbc.Driver";
    
    /**
     *  数据库查询，本操作查询完需手动关闭连接
     * @param sql
     * @param params
     * @return 查询结果ResultSet
     */
    public ResultSet getSlect(String sql,Object ...params){
        Vector rowDate=new Vector();
        Vector columnDate =new Vector();
        try {
            ct = connectWithDB();
            pS=ct.prepareStatement(sql);
            for(int i = 0;i < params.length;i++){
                pS.setObject(i+1, params[i]);
            }
            rS=pS.executeQuery();
        } catch (Exception e) {
            // TODO: handle exception
        }finally{
            return rS;
        }
    }
    
    /************修改数据库操作*********************/
    public int update(String sql,Object ...params){
        int executeUpdate_int = 0;
        try {
            ct = connectWithDB();
            pS=ct.prepareStatement(sql);
            for(int i = 0;i < params.length;i++){
                pS.setObject(i+1, params[i]);
            }
            //执行操作
            executeUpdate_int = pS.executeUpdate();
            System.out.println("executeUpdate_int = "+executeUpdate_int);
        } catch (Exception e) {
            // TODO: handle exception
        }finally{
            shutDownDB();
            return executeUpdate_int;
        }
    }
    
    /************连接数据库*********************/
    private Connection connectWithDB(){
        Connection connection = null;
        try {
            Class.forName(driverName);
            connection= DriverManager.getConnection(url, DBSomeType.ROOTUSERNAME, DBSomeType.ROOTPASSWORD);
        } catch (Exception e) {
            // TODO: handle exception
        }
        return connection;
    }
    
    /************关闭数据库的相关连接*********************/
    public void shutDownDB(){
        try
        {
            if(rS!=null) rS.close();
            if(pS!=null) pS.close();
            if(ct!=null) ct.close();
        } catch (Exception e2)
        {
            e2.printStackTrace();
            // TODO: handle exception
        }
    }
    
}