mysql通过jdbc备份

import java.io.FileWriter;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQLBackup {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";
        String backupFile = "backup.sql";

        try (Connection conn = DriverManager.getConnection(url, user, password);
             Statement stmt = conn.createStatement();
             FileWriter fileWriter = new FileWriter(backupFile)) {

            // 获取所有表名
            ResultSet tables = stmt.executeQuery("SHOW TABLES");
            while (tables.next()) {
                String tableName = tables.getString(1);
                fileWriter.write("-- Table: " + tableName + "\n");

                // 导出表结构
                ResultSet tableSchema = stmt.executeQuery("SHOW CREATE TABLE " + tableName);
                if (tableSchema.next()) {
                    fileWriter.write(tableSchema.getString(2) + ";\n\n");
                }
                tableSchema.close();

                // 导出表数据
                ResultSet tableData = stmt.executeQuery("SELECT * FROM " + tableName);
                while (tableData.next()) {
                    fileWriter.write("INSERT INTO " + tableName + " VALUES (");
                    for (int i = 1; i <= tableData.getMetaData().getColumnCount(); i++) {
                        if (i > 1) fileWriter.write(", ");
                        fileWriter.write("'" + tableData.getString(i).replace("'", "''") + "'");
                    }
                    fileWriter.write(");\n");
                }
                fileWriter.write("\n");
                tableData.close();
            }
            tables.close();

            System.out.println("Backup completed successfully.");
        } catch (SQLException | IOException e) {
            e.printStackTrace();
        }
    }
}