Java tutorial
/* * Copyright 2002-2012 the original author or authors. * * 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 * * https://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. */ package org.springframework.security.web.authentication.rememberme; import org.springframework.dao.DataAccessException; import org.springframework.dao.EmptyResultDataAccessException; import org.springframework.dao.IncorrectResultSizeDataAccessException; import org.springframework.jdbc.core.support.JdbcDaoSupport; import java.util.*; /** * JDBC based persistent login token repository implementation. * * @author Luke Taylor * @since 2.0 */ public class JdbcTokenRepositoryImpl extends JdbcDaoSupport implements PersistentTokenRepository { // ~ Static fields/initializers // ===================================================================================== /** Default SQL for creating the database table to store the tokens */ public static final String CREATE_TABLE_SQL = "create table persistent_logins (username varchar(64) not null, series varchar(64) primary key, " + "token varchar(64) not null, last_used timestamp not null)"; /** The default SQL used by the <tt>getTokenBySeries</tt> query */ public static final String DEF_TOKEN_BY_SERIES_SQL = "select username,series,token,last_used from persistent_logins where series = ?"; /** The default SQL used by <tt>createNewToken</tt> */ public static final String DEF_INSERT_TOKEN_SQL = "insert into persistent_logins (username, series, token, last_used) values(?,?,?,?)"; /** The default SQL used by <tt>updateToken</tt> */ public static final String DEF_UPDATE_TOKEN_SQL = "update persistent_logins set token = ?, last_used = ? where series = ?"; /** The default SQL used by <tt>removeUserTokens</tt> */ public static final String DEF_REMOVE_USER_TOKENS_SQL = "delete from persistent_logins where username = ?"; // ~ Instance fields // ================================================================================================ private String tokensBySeriesSql = DEF_TOKEN_BY_SERIES_SQL; private String insertTokenSql = DEF_INSERT_TOKEN_SQL; private String updateTokenSql = DEF_UPDATE_TOKEN_SQL; private String removeUserTokensSql = DEF_REMOVE_USER_TOKENS_SQL; private boolean createTableOnStartup; protected void initDao() { if (createTableOnStartup) { getJdbcTemplate().execute(CREATE_TABLE_SQL); } } public void createNewToken(PersistentRememberMeToken token) { getJdbcTemplate().update(insertTokenSql, token.getUsername(), token.getSeries(), token.getTokenValue(), token.getDate()); } public void updateToken(String series, String tokenValue, Date lastUsed) { getJdbcTemplate().update(updateTokenSql, tokenValue, lastUsed, series); } /** * Loads the token data for the supplied series identifier. * * If an error occurs, it will be reported and null will be returned (since the result * should just be a failed persistent login). * * @param seriesId * @return the token matching the series, or null if no match found or an exception * occurred. */ public PersistentRememberMeToken getTokenForSeries(String seriesId) { try { return getJdbcTemplate().queryForObject(tokensBySeriesSql, (rs, rowNum) -> new PersistentRememberMeToken(rs.getString(1), rs.getString(2), rs.getString(3), rs.getTimestamp(4)), seriesId); } catch (EmptyResultDataAccessException zeroResults) { if (logger.isDebugEnabled()) { logger.debug("Querying token for series '" + seriesId + "' returned no results.", zeroResults); } } catch (IncorrectResultSizeDataAccessException moreThanOne) { logger.error("Querying token for series '" + seriesId + "' returned more than one value. Series" + " should be unique"); } catch (DataAccessException e) { logger.error("Failed to load token for series " + seriesId, e); } return null; } public void removeUserTokens(String username) { getJdbcTemplate().update(removeUserTokensSql, username); } /** * Intended for convenience in debugging. Will create the persistent_tokens database * table when the class is initialized during the initDao method. * * @param createTableOnStartup set to true to execute the */ public void setCreateTableOnStartup(boolean createTableOnStartup) { this.createTableOnStartup = createTableOnStartup; } }