jdbc 增删改

来源：互联网发布：淘宝详情页视频时间编辑：程序博客网时间：2024/05/16 13:53

package java_web;

import java.sql.DriverManager;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

/**
* jdbc CURD
* @author Administrator
*
*/

public class rbacDemo {
public final static String URL="jdbc:mysql://localhost:3306/test";
public final static String USERNAME="root";
public final static String PASSWORD="";
public final static String DRIVER="com.mysql.jdbc.Driver";
/**
* 插入
*/
public static void insert(){
try {
Class.forName(DRIVER);

Connection conn = (Connection) DriverManager.getConnection(URL,USERNAME,PASSWORD);

String sql = "insert into test(name,sex)values('fifi2',1),('fifi3',3)";

Statement state = (Statement) conn.createStatement();

int result=state.executeUpdate(sql);
state.close();
conn.close();
System.out.println(result+"success");
} catch (ClassNotFoundException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}

public static void update(){
try {
Class.forName(DRIVER);

Connection conn = (Connection) DriverManager.getConnection(URL,USERNAME,PASSWORD);

String sql = "update test set name='fifi3aaa' where name='fifi3'";

Statement state = (Statement) conn.createStatement();

int result=state.executeUpdate(sql);
state.close();
conn.close();
System.out.println(result+"success");
} catch (ClassNotFoundException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}

public static void delete(){
try {
Class.forName(DRIVER);

Connection conn = (Connection) DriverManager.getConnection(URL,USERNAME,PASSWORD);

String sql = "delete from test where name='fifi3aaa'";

Statement state = (Statement) conn.createStatement();

int result=state.executeUpdate(sql);
state.close();
conn.close();
System.out.println(result+"success");
} catch (ClassNotFoundException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}

public static void main(String[] args){
//insert();
//update();
delete();
}
}

0 0