工具：eclipse、MySql、Navicat Premium、

import java.sql.Statement; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException;public class JDBCDemo2 {private static final String USERNAME = "root";private static final String PWD = "lwx";private static final String dbName = "rzw"; // 數據庫名private static final String url1 = "jdbc:mysql://localhost:3306/" + dbName;private static final String url2 = "?user=" + USERNAME + "&password=" + PWD;private static final String url3 = "&useUnicode=true&characterEncoding=GB2312";private static final String URL = url1 + url2 + url3; // 形成帶數據庫讀寫編碼的數據庫連接字// 此方法實現對數據庫的增刪改查 增刪改 一般 是 update(); 查 單獨public static void update() {// 增刪改Connection connection = null;Statement stmt = null;try {// a.導入驅動，加載具體的驅動類Class.forName("com.mysql.jdbc.Driver");// 加載具體的驅動類// b.與數據庫建立連接connection = DriverManager.getConnection(URL, USERNAME, PWD);// c.發送sql，執行(增刪改、查)stmt = connection.createStatement(); // String sql = "update student set STUNAME='ls' where stuno=1"; // String sql = "delete from student where stuno=1";// 執行SQLString sql = "Insert into stu_info values(17,'zs','男',20,70,177)";int count = stmt.executeUpdate(sql); // 返回值表示 增刪改 幾條數據// d.處理結果if (count > 0) {System.out.println("操作成功！");}} catch (ClassNotFoundException e) {e.printStackTrace();} catch (SQLException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();} finally {try {if (stmt != null)stmt.close();// 對象.方法if (connection != null)connection.close();} catch (SQLException e) {e.printStackTrace();}}}public static void main(String[] args) {update();} }

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