Question

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Client does not support authentication protocol requested by server; consider upgrading MySQL client
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3558)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3490)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)
    at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3996)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2137)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:776)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:284)
    at java.sql/java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql/java.sql.DriverManager.getConnection(Unknown Source)
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:154)
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:145)
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:205)
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:169)
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180)
    at org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl.getIsolatedConnection(DdlTransactionIsolatorNonJtaImpl.java:43)

即使更新了mysql密码，我也会收到此错误。我在一些帖子中读到mysql有一个新的缓存机制，并且所有客户端都需要运行以下我已经做过的但仍然是同样的错误：

 update user set authentication_string='test' where user='root';
 flush privileges

Answer 1

第1步：使用SELECT version();查询来检查当前Mysql的版本。

第2步：检查Maven中Mysql jdbc驱动程序的版本或Mysql依赖项。

第3步：升级Mysql的jar版本或maven依赖版本。

Answer 2

可以使用以下步骤纠正此问题：-

步骤1：-在mysql中运行以下查询并重新启动（对于版本> 8.0，用户名在此处为root）

使用“ yourpassword”通过mysql_native_password标识ALTER USER'root'@'localhost';

步骤2：-通过运行select version（）来检查mysql的版本；在mysql中

 the version of mysql in pom.xml should be same as the version of mysql installed (mine is 8.0.14)
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.14</version>

步骤3：-如果maven存储库中没有mysql-connector jar文件，则可以下载8.0.14版本的jar并将其粘贴到存储库中

$ \。m2 \ repository \ mysql \ mysql-connector-java \ 8.0.14

步骤4：-更新您的Maven项目

步骤5：-在config.xml中检查driverClassName，它应该是“ com.mysql.cj.jdbc.Driver”。

Answer 3

您必须使用MySQL的OLD_PASSWORD函数更新数据库用户的密码。 SOLUTION

例如：

[rajesh-tpl-01@home ~]$ mysql -u root -p mysql
Enter password:

mysql> update user set password=OLD_PASSWORD('password') WHERE 
user='username';
Query OK, 0 rows affected (0.02 sec)
Rows matched: 0  Changed: 0  Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

Answer 4

在项目的lib文件夹中检查mysql-connector-java-version.jar（例如：mysql-connector-java-8.0.11.jar），并进行相应升级。

Answer 5

我已经完成了提示信息。我曾在pom.xml中进餐：

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.18</version>
</dependency>

并更改为latest version：

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.12</version>
</dependency>

Answer 6

只需将mysql-connector-java更新到最新版本，就不需要其他任何事情

Answer 7

问题出在mysql-connector-java版本5.1.6。尝试升级到5.1.44版。为我工作。我使用了以下依赖版本：

compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.44'

Answer 8

只需更新POM.XML文件中的版本，如果问题仅与客户端版本有关，则只需升级最新版本->然后清除项目即可。运行成功了。

MySQLNonTransientConnectionException：客户端不支持服务器请求的身份验证协议;考虑升级MySQL客户端

8 个答案: