JDBC连接数据库(Java DataBase Connectivity,java)

通过JDBC操作数据库(以mysql为例)

1、官网下载JDBC的相关JAR包

【https://dev.mysql.com/downloads/connector/j/】

2、解压后，导入jar包

连接数据(引入外部jar包)
项目上右键->build path->configure build path->上面Libraries->Add External JARs

 

3、编程

package Head18;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;import java.sql.Statement;import com.mysql.jdbc.PreparedStatement;public class JDBC {public static void main(String[] args) {//加载驱动try {Class.forName("com.mysql.jdbc.Driver");System.out.println("加载驱动成功");} catch (ClassNotFoundException e) {e.printStackTrace();}//数据库连接String url="jdbc:mysql://127.0.0.1:13306/lianxi1?user=root&password=123456"+ "&useUnicode=true&characterEncoding=utf-8";Connection con=null;try {con= DriverManager.getConnection(url);System.out.println("数据库建立成功");} catch (SQLException e) {e.printStackTrace();System.out.println("数据库建立失败");}//建立句柄Statement stmt=null;try {stmt=con.createStatement();System.out.println("建立句柄成功");} catch (SQLException e) {// TODO Auto-generated catch block
            e.printStackTrace();}//操作句柄,插入语句String sql="INSERT INTO bp1 VALUES ('111','大饼','男','19930101','95033')";try {boolean bsql=stmt.execute(sql);if (bsql){System.out.println("插入失败");}else{System.out.println("插入成功");}} catch (SQLException e) {e.printStackTrace();}//操作句柄，查询语句String sql1="select * from bp1";try {ResultSet rs=stmt.executeQuery(sql1);int col=rs.getMetaData().getColumnCount();while(rs.next()){for (int i = 1; i <= col; i++) {System.out.print(rs.getString(i) + "\t");}System.out.println("");}} catch (SQLException e) {e.printStackTrace();}}
}