使用Java连接MySQL数据库,通过JDBC执行SQL语句创建表。示例代码如下:,,“java,import java.sql.Connection;,import java.sql.DriverManager;,import java.sql.Statement;,,public class CreateTable {, public static void main(String[] args) {, String url = "jdbc:mysql://localhost:3306/test";, String user = "root";, String password = "123456";, String sql = "CREATE TABLE IF NOT EXISTS users (id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(255), age INT)";,, try {, Class.forName("com.mysql.jdbc.Driver");, Connection connection = DriverManager.getConnection(url, user, password);, Statement statement = connection.createStatement();, statement.executeUpdate(sql);, System.out.println("表创建成功");, statement.close();, connection.close();, } catch (Exception e) {, e.printStackTrace();, }, },},
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在Java中创建MySQL表,首先需要确保已经安装了MySQL数据库,并且已经添加了MySQL的JDBC驱动(如mysqlconnectorjava)到项目的依赖中,以下是详细步骤:
1、导入所需的库
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
2、加载并注册JDBC驱动
Class.forName("com.mysql.cj.jdbc.Driver");
3、建立与数据库的连接
String url = "jdbc:mysql://localhost:3306/数据库名?useSSL=false&serverTimezone=UTC";
String user = "用户名";
String password = "密码";
Connection connection = DriverManager.getConnection(url, user, password);
4、创建Statement对象
Statement statement = connection.createStatement();
5、编写SQL语句创建表
String createTableSQL = "CREATE TABLE IF NOT EXISTS 表名 (" +
"列名1 数据类型(长度) PRIMARY KEY," +
"列名2 数据类型(长度)," +
"列名3 数据类型(长度)," +
// ...其他列
")";
6、执行SQL语句创建表
int result = statement.executeUpdate(createTableSQL);
if (result == 0) {
System.out.println("创建表成功");
} else {
System.out.println("创建表失败");
}
7、关闭资源
statement.close();
connection.close();
将以上代码整合到一个方法中,即可实现在Java中创建MySQL表的功能。
public static void main(String[] args) {
try {
// 加载并注册JDBC驱动
Class.forName("com.mysql.cj.jdbc.Driver");
// 建立与数据库的连接
String url = "jdbc:mysql://localhost:3306/数据库名?useSSL=false&serverTimezone=UTC";
String user = "用户名";
String password = "密码";
Connection connection = DriverManager.getConnection(url, user, password);
// 创建Statement对象
Statement statement = connection.createStatement();
// 编写SQL语句创建表
String createTableSQL = "CREATE TABLE IF NOT EXISTS 表名 (" +
"列名1 数据类型(长度) PRIMARY KEY," +
"列名2 数据类型(长度)," +
"列名3 数据类型(长度)," +
// ...其他列
")";
// 执行SQL语句创建表
int result = statement.executeUpdate(createTableSQL);
if (result == 0) {
System.out.println("创建表成功");
} else {
System.out.println("创建表失败");
}
// 关闭资源
statement.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
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