这个问题有几次出现，但没有答案提供有关如何修复或诊断问题的信息。
我有一个简单的java应用程序，它使用MySQL JDBC连接到我本地服务器上的MySQL数据库：
String url = "jdbc:mysql://localhost:3306/dbName";
String userName = "parser";
String password = "123";
try {
Connection conn = DriverManager.getConnection(url,userName, password);
} catch (SQLException e1) {
e1.printStackTrace();
}
然而，Java会引发异常：
java.sql.SQLException: Access denied for user 'parser'@'localhost' (using password: YES)
simillar问题的许多答案表明用户没有连接权限，但在我的情况下它有：
+---------------------------------------------------------------+
| Grants for parser@% |
+---------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'parser'@'%' WITH GRANT OPTION |
+---------------------------------------------------------------+
任何人都可以向我解释为什么会发生这种情况，如何诊断或了解问题是什么？
更新1： mysql用户的权限列表
+--------------------------+---------------+-------------------------+--------------+
| GRANTEE | TABLE_CATALOG | PRIVILEGE_TYPE | IS_GRANTABLE |
+--------------------------+---------------+-------------------------+--------------+
| 'root'@'localhost' | def | SELECT | YES |
| 'root'@'localhost' | def | INSERT | YES |
| 'root'@'localhost' | def | UPDATE | YES |
| 'root'@'localhost' | def | DELETE | YES |
| 'root'@'localhost' | def | CREATE | YES |
| 'root'@'localhost' | def | DROP | YES |
| 'root'@'localhost' | def | RELOAD | YES |
| 'root'@'localhost' | def | SHUTDOWN | YES |
| 'root'@'localhost' | def | PROCESS | YES |
| 'root'@'localhost' | def | FILE | YES |
| 'root'@'localhost' | def | REFERENCES | YES |
| 'root'@'localhost' | def | INDEX | YES |
| 'root'@'localhost' | def | ALTER | YES |
| 'root'@'localhost' | def | SHOW DATABASES | YES |
| 'root'@'localhost' | def | SUPER | YES |
| 'root'@'localhost' | def | CREATE TEMPORARY TABLES | YES |
| 'root'@'localhost' | def | LOCK TABLES | YES |
| 'root'@'localhost' | def | EXECUTE | YES |
| 'root'@'localhost' | def | REPLICATION SLAVE | YES |
| 'root'@'localhost' | def | REPLICATION CLIENT | YES |
| 'root'@'localhost' | def | CREATE VIEW | YES |
| 'root'@'localhost' | def | SHOW VIEW | YES |
| 'root'@'localhost' | def | CREATE ROUTINE | YES |
| 'root'@'localhost' | def | ALTER ROUTINE | YES |
| 'root'@'localhost' | def | CREATE USER | YES |
| 'root'@'localhost' | def | EVENT | YES |
| 'root'@'localhost' | def | TRIGGER | YES |
| 'root'@'localhost' | def | CREATE TABLESPACE | YES |
| 'mysql.sys'@'localhost' | def | USAGE | NO |
| 'parser'@'127.0.0.1' | def | SELECT | YES |
| 'parser'@'127.0.0.1' | def | INSERT | YES |
| 'parser'@'127.0.0.1' | def | UPDATE | YES |
| 'parser'@'127.0.0.1' | def | DELETE | YES |
| 'parser'@'127.0.0.1' | def | CREATE | YES |
| 'parser'@'127.0.0.1' | def | DROP | YES |
| 'parser'@'127.0.0.1' | def | RELOAD | YES |
| 'parser'@'127.0.0.1' | def | SHUTDOWN | YES |
| 'parser'@'127.0.0.1' | def | PROCESS | YES |
| 'parser'@'127.0.0.1' | def | FILE | YES |
| 'parser'@'127.0.0.1' | def | REFERENCES | YES |
| 'parser'@'127.0.0.1' | def | INDEX | YES |
| 'parser'@'127.0.0.1' | def | ALTER | YES |
| 'parser'@'127.0.0.1' | def | SHOW DATABASES | YES |
| 'parser'@'127.0.0.1' | def | SUPER | YES |
| 'parser'@'127.0.0.1' | def | CREATE TEMPORARY TABLES | YES |
| 'parser'@'127.0.0.1' | def | LOCK TABLES | YES |
| 'parser'@'127.0.0.1' | def | EXECUTE | YES |
| 'parser'@'127.0.0.1' | def | REPLICATION SLAVE | YES |
| 'parser'@'127.0.0.1' | def | REPLICATION CLIENT | YES |
| 'parser'@'127.0.0.1' | def | CREATE VIEW | YES |
| 'parser'@'127.0.0.1' | def | SHOW VIEW | YES |
| 'parser'@'127.0.0.1' | def | CREATE ROUTINE | YES |
| 'parser'@'127.0.0.1' | def | ALTER ROUTINE | YES |
| 'parser'@'127.0.0.1' | def | CREATE USER | YES |
| 'parser'@'127.0.0.1' | def | EVENT | YES |
| 'parser'@'127.0.0.1' | def | TRIGGER | YES |
| 'parser'@'127.0.0.1' | def | CREATE TABLESPACE | YES |
| 'simple_cms'@'localhost' | def | USAGE | NO |
| 'root'@'%' | def | SELECT | YES |
| 'root'@'%' | def | INSERT | YES |
| 'root'@'%' | def | UPDATE | YES |
| 'root'@'%' | def | DELETE | YES |
| 'root'@'%' | def | CREATE | YES |
| 'root'@'%' | def | DROP | YES |
| 'root'@'%' | def | RELOAD | YES |
| 'root'@'%' | def | SHUTDOWN | YES |
| 'root'@'%' | def | PROCESS | YES |
| 'root'@'%' | def | FILE | YES |
| 'root'@'%' | def | REFERENCES | YES |
| 'root'@'%' | def | INDEX | YES |
| 'root'@'%' | def | ALTER | YES |
| 'root'@'%' | def | SHOW DATABASES | YES |
| 'root'@'%' | def | SUPER | YES |
| 'root'@'%' | def | CREATE TEMPORARY TABLES | YES |
| 'root'@'%' | def | LOCK TABLES | YES |
| 'root'@'%' | def | EXECUTE | YES |
| 'root'@'%' | def | REPLICATION SLAVE | YES |
| 'root'@'%' | def | REPLICATION CLIENT | YES |
| 'root'@'%' | def | CREATE VIEW | YES |
| 'root'@'%' | def | SHOW VIEW | YES |
| 'root'@'%' | def | CREATE ROUTINE | YES |
| 'root'@'%' | def | ALTER ROUTINE | YES |
| 'root'@'%' | def | CREATE USER | YES |
| 'root'@'%' | def | EVENT | YES |
| 'root'@'%' | def | TRIGGER | YES |
| 'root'@'%' | def | CREATE TABLESPACE | YES |
| 'parser'@'%' | def | SELECT | YES |
| 'parser'@'%' | def | INSERT | YES |
| 'parser'@'%' | def | UPDATE | YES |
| 'parser'@'%' | def | DELETE | YES |
| 'parser'@'%' | def | CREATE | YES |
| 'parser'@'%' | def | DROP | YES |
| 'parser'@'%' | def | RELOAD | YES |
| 'parser'@'%' | def | SHUTDOWN | YES |
| 'parser'@'%' | def | PROCESS | YES |
| 'parser'@'%' | def | FILE | YES |
| 'parser'@'%' | def | REFERENCES | YES |
| 'parser'@'%' | def | INDEX | YES |
| 'parser'@'%' | def | ALTER | YES |
| 'parser'@'%' | def | SHOW DATABASES | YES |
| 'parser'@'%' | def | SUPER | YES |
| 'parser'@'%' | def | CREATE TEMPORARY TABLES | YES |
| 'parser'@'%' | def | LOCK TABLES | YES |
| 'parser'@'%' | def | EXECUTE | YES |
| 'parser'@'%' | def | REPLICATION SLAVE | YES |
| 'parser'@'%' | def | REPLICATION CLIENT | YES |
| 'parser'@'%' | def | CREATE VIEW | YES |
| 'parser'@'%' | def | SHOW VIEW | YES |
| 'parser'@'%' | def | CREATE ROUTINE | YES |
| 'parser'@'%' | def | ALTER ROUTINE | YES |
| 'parser'@'%' | def | CREATE USER | YES |
| 'parser'@'%' | def | EVENT | YES |
| 'parser'@'%' | def | TRIGGER | YES |
| 'parser'@'%' | def | CREATE TABLESPACE | YES |
+--------------------------+---------------+-------------------------+--------------+
答案 0 :(得分：0)
似乎是用户＆＃34;解析器＆＃34;的许可。是不正确的。您可以使用statement检查user配置。
SELECT * FROM information_schema.USER_PRIVILEGES;
如果您已为用户授予新权限，则必须重新加载设置。您可以使用此FLUSH PRIVILEGES;
如何授予不同的用户权限：
要向特定用户提供权限，您可以使用此框架：
GRANT [type of permission] ON [database name].[table name] TO ‘[username]’@'localhost’;
我希望这可以帮助您解决问题。永远不要忘记冲洗!!!