JDBC(Statement)--Create Table

最新推荐文章于 2022-04-26 20:59:42 发布

原创最新推荐文章于 2022-04-26 20:59:42 发布 · 2.2k 阅读

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#jdbc #mysql

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本文提供了一个使用 Java JDBC 创建 MySQL 数据库中用户表的示例代码。该示例展示了如何通过 Java 连接到 MySQL 数据库并执行 SQL 语句来创建包含主键 USER_ID 和其它字段的 DBUSER 表。

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package com.jack.common;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
 
public class JDBCStatementCreateExample {
 
	private static final String DB_DRIVER = "com.mysql.jdbc.Driver";
	private static final String DB_CONNECTION = "jdbc:mysql://localhost:3306/jdbc";
	private static final String DB_USER = "root";
	private static final String DB_PASSWORD = "root";
 
	public static void main(String[] argv) {
 
		try {
			createDbUserTable();
		} catch (SQLException e) {
			System.out.println(e.getMessage());
		}
 
	}
 
	private static void createDbUserTable() throws SQLException {
 
		Connection dbConnection = null;
		Statement statement = null;
 
		String createTableSQL = "CREATE TABLE DBUSER("
				+ "USER_ID BIGINT NOT NULL, "
				+ "USERNAME VARCHAR(20) NOT NULL, "
				+ "CREATED_BY VARCHAR(20) NOT NULL, "
				+ "CREATED_DATE DATE NOT NULL, " + "PRIMARY KEY (USER_ID) "
				+ ")";
 
		try {
			dbConnection = getDBConnection();
			statement = dbConnection.createStatement();
			System.out.println(createTableSQL);
			//可执行任何SQL语句，返回一个布尔值，表示是否返回ResultSet
			statement.execute(createTableSQL);
			System.out.println("Table \"dbuser\" is created!");
		} catch (SQLException e) {
			System.out.println(e.getMessage());
		} finally {
			if (statement != null) {
				statement.close();
			}
			if (dbConnection != null) {
				dbConnection.close();
			}
		}
	}
 
	private static Connection getDBConnection() {
		Connection dbConnection = null;
		try {
			Class.forName(DB_DRIVER);
		} catch (ClassNotFoundException e) {
			System.out.println(e.getMessage());
		}
		try {
			dbConnection = DriverManager.getConnection(DB_CONNECTION, DB_USER,DB_PASSWORD);
			return dbConnection;
		} catch (SQLException e) {
			System.out.println(e.getMessage());
		}
		return dbConnection;
	}
 
}