Tool to run database scripts, Source: http://pastebin.com/ZrUcDjSx ; http://stackoverflow.com/questions/1044194/running-a-sql-script-using-mysql-with-jdbc/

ScriptRunner.java

/*
 * Added additional null checks when closing the ResultSet and Statements.
 *
 * Thanks to pihug12 and Grzegorz Oledzki at stackoverflow.com
 * http://stackoverflow.com/questions/5332149/jdbc-scriptrunner-java-lang-nullpointerexception?tab=active#tab-top
 */
/*
 * Modified: Use logWriter in print(Object), JavaDoc comments, correct Typo.
 */
/*
 * Modified by Pantelis Sopasakis <[email protected]> to take care of DELIMITER statements. This way you
 * can execute scripts that contain some TRIGGER creation code. New version using REGEXPs! Latest
 * modification: Cater for a NullPointerException while parsing. Date: Feb 16, 2011, 11:48 EET
 */
/*
 * Slightly modified version of the com.ibatis.common.jdbc.ScriptRunner class from the iBATIS Apache
 * project. Only removed dependency on Resource class and a constructor
 */
/*
 * Copyright 2004 Clinton Begin Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

import java.io.IOException;
import java.io.LineNumberReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Tool to run database scripts. This version of the script can be found at 
 * https://gist.github.com/gists/831762/  
 */
public class ScriptRunner {

	private static final String DEFAULT_DELIMITER = ";";
	private static final String DELIMITER_LINE_REGEX = "(?i)DELIMITER.+";
	private static final String DELIMITER_LINE_SPLIT_REGEX = "(?i)DELIMITER";

	private final Connection connection;
	private final boolean stopOnError;
	private final boolean autoCommit;
	private PrintWriter logWriter = new PrintWriter(System.out);
	private PrintWriter errorLogWriter = new PrintWriter(System.err);
	private String delimiter = DEFAULT_DELIMITER;
	private boolean fullLineDelimiter = false;

	/**
	 * Default constructor.
	 * 
	 * @param connection
	 * @param autoCommit
	 * @param stopOnError
	 */
	public ScriptRunner(Connection connection, boolean autoCommit, boolean stopOnError) {
		this.connection = connection;
		this.autoCommit = autoCommit;
		this.stopOnError = stopOnError;
	}

	/**
	 * @param delimiter
	 * @param fullLineDelimiter
	 */
	public void setDelimiter(String delimiter, boolean fullLineDelimiter) {
		this.delimiter = delimiter;
		this.fullLineDelimiter = fullLineDelimiter;
	}

	/**
	 * Setter for logWriter property.
	 * 
	 * @param logWriter
	 *        - the new value of the logWriter property
	 */
	public void setLogWriter(PrintWriter logWriter) {
		this.logWriter = logWriter;
	}

	/**
	 * Setter for errorLogWriter property.
	 * 
	 * @param errorLogWriter
	 *        - the new value of the errorLogWriter property
	 */
	public void setErrorLogWriter(PrintWriter errorLogWriter) {
		this.errorLogWriter = errorLogWriter;
	}

	/**
	 * Runs an SQL script (read in using the Reader parameter).
	 * 
	 * @param reader
	 *        - the source of the script
	 * @throws SQLException
	 *         if any SQL errors occur
	 * @throws IOException
	 *         if there is an error reading from the Reader
	 */
	public void runScript(Reader reader) throws IOException, SQLException {
		try {
			boolean originalAutoCommit = connection.getAutoCommit();
			try {
				if (originalAutoCommit != autoCommit) {
					connection.setAutoCommit(autoCommit);
				}
				runScript(connection, reader);
			} finally {
				connection.setAutoCommit(originalAutoCommit);
			}
		} catch (IOException e) {
			throw e;
		} catch (SQLException e) {
			throw e;
		} catch (Exception e) {
			throw new RuntimeException("Error running script.  Cause: " + e, e);
		}
	}

	/**
	 * Runs an SQL script (read in using the Reader parameter) using the connection passed in.
	 * 
	 * @param conn
	 *        - the connection to use for the script
	 * @param reader
	 *        - the source of the script
	 * @throws SQLException
	 *         if any SQL errors occur
	 * @throws IOException
	 *         if there is an error reading from the Reader
	 */
	private void runScript(Connection conn, Reader reader) throws IOException, SQLException {
		StringBuffer command = null;
		try {
			LineNumberReader lineReader = new LineNumberReader(reader);
			String line = null;
			while ((line = lineReader.readLine()) != null) {
				if (command == null) {
					command = new StringBuffer();
				}
				String trimmedLine = line.trim();
				if (trimmedLine.startsWith("--")) {
					println(trimmedLine);
				} else if (trimmedLine.length() < 1 || trimmedLine.startsWith("//")) {
					// Do nothing
				} else if (trimmedLine.length() < 1 || trimmedLine.startsWith("--")) {
					// Do nothing
				} else if (!fullLineDelimiter && trimmedLine.endsWith(getDelimiter())
						|| fullLineDelimiter && trimmedLine.equals(getDelimiter())) {

					Pattern pattern = Pattern.compile(DELIMITER_LINE_REGEX);
					Matcher matcher = pattern.matcher(trimmedLine);
					if (matcher.matches()) {
						setDelimiter(trimmedLine.split(DELIMITER_LINE_SPLIT_REGEX)[1].trim(),
								fullLineDelimiter);
						line = lineReader.readLine();
						if (line == null) {
							break;
						}
						trimmedLine = line.trim();
					}

					command.append(line.substring(0, line.lastIndexOf(getDelimiter())));
					command.append(" ");
					Statement statement = conn.createStatement();

					println(command);

					boolean hasResults = false;
					if (stopOnError) {
						hasResults = statement.execute(command.toString());
					} else {
						try {
							statement.execute(command.toString());
						} catch (SQLException e) {
							e.fillInStackTrace();
							printlnError("Error executing: " + command);
							printlnError(e);
						}
					}

					if (autoCommit && !conn.getAutoCommit()) {
						conn.commit();
					}

					ResultSet rs = statement.getResultSet();
					if (hasResults && rs != null) {
						ResultSetMetaData md = rs.getMetaData();
						int cols = md.getColumnCount();
						for (int i = 0; i < cols; i++) {
							String name = md.getColumnLabel(i);
							print(name + "\t");
						}
						println("");
						while (rs.next()) {
							for (int i = 1; i <= cols; i++) {
								String value = rs.getString(i);
								print(value + "\t");
							}
							println("");
						}
					}

					command = null;
					try {
						if (rs != null) {
							rs.close();
						}
					} catch (Exception e) {
						e.printStackTrace();
					}
					try {
						if (statement != null) {
							statement.close();
						}
					} catch (Exception e) {
						e.printStackTrace();
						// Ignore to workaround a bug in Jakarta DBCP
					}
				} else {
					Pattern pattern = Pattern.compile(DELIMITER_LINE_REGEX);
					Matcher matcher = pattern.matcher(trimmedLine);
					if (matcher.matches()) {
						setDelimiter(trimmedLine.split(DELIMITER_LINE_SPLIT_REGEX)[1].trim(),
								fullLineDelimiter);
						line = lineReader.readLine();
						if (line == null) {
							break;
						}
						trimmedLine = line.trim();
					}
					command.append(line);
					command.append(" ");
				}
			}
			if (!autoCommit) {
				conn.commit();
			}
		} catch (SQLException e) {
			e.fillInStackTrace();
			printlnError("Error executing: " + command);
			printlnError(e);
			throw e;
		} catch (IOException e) {
			e.fillInStackTrace();
			printlnError("Error executing: " + command);
			printlnError(e);
			throw e;
		} finally {
			conn.rollback();
			flush();
		}
	}

	private String getDelimiter() {
		return delimiter;
	}

	private void print(Object o) {
		if (logWriter != null) {
			logWriter.print(o);
		}
	}

	private void println(Object o) {
		if (logWriter != null) {
			logWriter.println(o);
		}
	}

	private void printlnError(Object o) {
		if (errorLogWriter != null) {
			errorLogWriter.println(o);
		}
	}

	private void flush() {
		if (logWriter != null) {
			logWriter.flush();
		}
		if (errorLogWriter != null) {
			errorLogWriter.flush();
		}
	}
}