Java WEB之JDBC连接数据库的增删改查

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基于Myeclipse的数据库操作（非tomcat里导入驱动程序）

1>新建java Web项目右键点击项目工程new->folder 起名lib（用来存放jdbc驱动程序）

2>找到驱动程序（mysql-connector-java-5.0.4-bin.jar）导入到lib中，右键点击驱动程序->build path->add build path，看到像奶瓶的文件就代表导入成功，即数据库驱动到此就可以用了

3>打开mysql

create database books；

create table book(name varchar(15),id int)；

4>写程序进行增删改查(以java程序为例,java web里面写大同小异)

package com;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.util.Scanner;

import com.mysql.jdbc.Connection;

import com.mysql.jdbc.PreparedStatement;

import com.mysql.jdbc.ResultSet;

public class test {

public static void main(String[] args) throws ClassNotFoundException, SQLException {

Insert1(123456,"pan");

//Query1();

}

public static void Insert1(int id,String na) throws ClassNotFoundException, SQLException{

Connection conn=null;

Class.forName("com.mysql.jdbc.Driver");

conn=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/book","root","123456");

String sql="insert into b(name,id)values(?,?)";

PreparedStatement pst=(PreparedStatement) conn.prepareStatement(sql);

pst.setString(1,na);

pst.setInt(2,id);

pst.executeUpdate();

if(conn!=null){

conn.close();

}

public static void Query1() throws ClassNotFoundException, SQLException{

Connection conn=null;

Class.forName("com.mysql.jdbc.Driver");

conn=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/book","root","123456");

String sql="select * from b";

PreparedStatement pst=(PreparedStatement) conn.prepareStatement(sql);

ResultSet rs=(ResultSet) pst.executeQuery();

while(rs.next()){

int c=rs.getInt(2);

String name=rs.getString(1);

System.out.println(c+","+name+",");

}

if(conn!=null){

conn.close();

}

}
5>增加和查找编写成功了，以此为例

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