java_option的博客

mysql> show global variables like '%lower_case%';+------------------------+-------+| Variable_name | Value |+------------------------+-------+| lower_case_file_system | OFF || lower_case_table_names | 0 |+------------------------+--

在数据库连接 右击选择命令行界面在这直接重置为rootmysql> use mysql;Database changedmysql> UPDATE user SET authentication_string = PASSWORD('root') WHERE user = 'root';Query OK, 1 row affected (0.04 sec)Rows matched: 1 Changed: 1 Warnings: 1mysql> flush privil.

java.sql.SQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections" at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQL