sql server操作类（本人自己写的）

package com.mytest;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;        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();        } catch (Exception e) {            // TODO: handle exception        }finally{            shutDownDB();            return executeUpdate_int;        }    }        /************连接数据库*********************/    private Connection connectWithDB(){        Connection connection = null;        try {            //加载驱动            Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");            connection =  DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;databaseName=spdb","sa","123456");        } 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        }    }    }