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在Java中操作MySQL数据库,通常使用JDBC(Java Database Connectivity)API。以下是一个简单的示例,展示了如何连接到MySQL数据库、执行增删改查操作。
import java.sql.*;
public class MySQLExample {
// JDBC URL, username, and password of MySQL server
static final String JDBC_URL = "jdbc:mysql://localhost:3306/mydb";
static final String USER = "username";
static final String PASS = "password";
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
try {
// 1. Register JDBC driver
Class.forName("com.mysql.cj.jdbc.Driver");
// 2. Open a connection
System.out.println("Connecting to database...");
conn = DriverManager.getConnection(JDBC_URL, USER, PASS);
// 3. Execute a query
System.out.println("Creating statement...");
stmt = conn.createStatement();
// Insert operation
String sqlInsert = "INSERT INTO employees (id, name, age, position) VALUES (1, 'John Doe', 30, 'Manager')";
stmt.executeUpdate(sqlInsert);
System.out.println("Inserted record into the table...");
// Update operation
String sqlUpdate = "UPDATE employees SET age = 31 WHERE id = 1";
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