PreparedStatement缓存开启

数据库	配置样式
mysql	config.addConnectProperty("cachePrepStmts", "true"); config.addConnectProperty("prepStmtCacheSize", "50"); config.addConnectProperty("prepStmtCacheSqlLimit", "2048"); config.addConnectProperty("useServerPrepStmts", "true");
mariadb	同上
Oracle	config.addConnectProperty("oracle.jdbc.implicitStatementCacheSize", "50");
postgresql	config.addConnectProperty("extendedCacheEverything", "true"); config.addConnectProperty("preparedStatementCacheQueries", "50");