使用JDBC连接到MySQL时访问被拒绝
[英]Access denied when using JDBC to connect to MySQL
问题描述
This question has several occurrence, but no answer provides information on how to fix or diagnose the problem. 
该问题已多次出现，但没有答案提供有关如何解决或诊断问题的信息。 I have a simple java application that uses MySQL JDBC to connect to MySQL database on my local server: 我有一个简单的Java应用程序，它使用MySQL JDBC连接到本地服务器上的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();
}
However java throws an exception: 但是，java抛出异常：
java.sql.SQLException: Access denied for user 'parser'@'localhost' (using password: YES)
Many answers to simillar question suggest that user has no privileges for connetction, but in my case it has: 相似问题的许多答案表明用户没有连接特权，但在我的情况下，它具有：
+---------------------------------------------------------------+
| Grants for parser@% |
+---------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'parser'@'%' WITH GRANT OPTION |
+---------------------------------------------------------------+
Can any one explain to me why this happens, how to diagnose or understand what's the issue? 谁能向我解释为什么会发生这种情况，如何诊断或了解问题所在？
Update 1: Permissions list for mysql users 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 |
+--------------------------+---------------+-------------------------+--------------+
1 个解决方案
解决方案1
0 2017-07-29 22:58:56
It seems like the permission of user "parser" is not correct. 似乎用户“解析器”的权限不正确。 You can check the configuration of user with statement. 您可以使用语句检查用户的配置。
SELECT * FROM information_schema.USER_PRIVILEGES;
If you have granded an user new permission you have to reload the settings. 如果授予用户新的权限，则必须重新加载设置。 You can do this with this FLUSH PRIVILEGES; 您可以使用此FLUSH PRIVILEGES;来做到这一点FLUSH PRIVILEGES;
How To Grant Different User Permissions: 如何授予不同的用户权限：
- ALL PRIVILEGES- as we saw previously, this would allow a MySQL user all access to a designated database (or if no database is selected, across the system) ALL PRIVILEGES-正如我们之前看到的，这将允许MySQL用户全部访问指定的数据库（或者如果未选择数据库，则跨系统）
- CREATE- allows them to create new tables or databases 创建-允许他们创建新表或数据库
- DROP- allows them to them to delete tables or databases DROP-允许他们删除表或数据库
- DELETE- allows them to delete rows from tables INSERT- allows them to insert rows into tables DELETE-允许他们从表中删除行INSERT-允许他们将表中的行插入
- SELECT- allows them to use the Select command to read through databases SELECT-允许他们使用Select命令来读取数据库
- UPDATE- allow them to update table rows UPDATE-允许他们更新表行
- GRANT OPTION- allows them to grant or remove other users' privileges GRANT OPTION-允许他们授予或删除其他用户的特权
To provide a specific user with a permission, you can use this framework: 要为特定用户提供权限，您可以使用以下框架：
GRANT [type of permission] ON [database name].[table name] TO ‘[username]’@'localhost’;
I hope this will help you solve your issue. 希望这可以帮助您解决问题。 Never forget to flush!!! 永远不要忘记冲洗！！！
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