Java代码
package com.zm.bbs;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DB {
public static Connection getConn(){
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/bbs","root","root");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}

public static Statement getStmt(Connection conn){
Statement stmt=null;
try {
stmt=conn.createStatement();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return stmt;
}
public static ResultSet getRs(Statement stmt,String sql){
ResultSet rs=null;
try {
rs=stmt.executeQuery(sql);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return rs;
}

public static void close(ResultSet rs){
if(rs!=null){
try {
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rs=null;
}
}

public static void close(Statement stmt){
if(stmt!=null){
try {
stmt.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
stmt=null;
}
}

public static void close(Connection conn){
if(conn!=null){
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
conn=null;
}
}
}

作者“不做浮躁的人!!!”