Question

我有一个非常基本的Spring Boot应用程序，旨在使用JPA / MySQL：

...
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <scope>runtime</scope>
</dependency>
...

但是，我的MySQL数据库是Docker容器：

docker run --name mysql -e MYSQL_ROOT_PASSWORD=mypass123 -d mysql:8.0.1

下面是我的application.properties文件，用于配置数据库连接：

spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/db_example
spring.datasource.username=springuser
spring.datasource.password=ThePassword

我已经这样设置了数据库和用户：

> docker exec -it mysql bash -l
root@cef13b77d8c6:/# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 8.0.1-dmr MySQL Community Server (GPL)
...
mysql> create database db_example;
Query OK, 1 row affected (0.07 sec)

mysql> create user 'springuser'@'%' identified by 'ThePassword';
Query OK, 0 rows affected (0.06 sec)

mysql> grant all on db_example.* to 'springuser'@'%';
Query OK, 0 rows affected (0.11 sec)

就绪...：）

运行JAR时，我得到Access denied to user 'springuser'@'localhost' (using password: YES)：

> mvn clean package
...
> java -jar .\target\accessing-data-mysql-0.0.1-SNAPSHOT.jar
...
2019-12-19 11:28:29.659  INFO 42768 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-12-19 11:28:29.685  INFO 42768 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-12-19 11:28:29.686  INFO 42768 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.22]
2019-12-19 11:28:29.783  INFO 42768 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-12-19 11:28:29.783  INFO 42768 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1424 ms
2019-12-19 11:28:29.926  INFO 42768 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2019-12-19 11:28:31.512 ERROR 42768 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Exception during pool initialization.

java.sql.SQLException: Access denied for user 'springuser'@'localhost' (using password: YES)
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
        at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
        at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:827) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
        at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:447) ~[mysql-connector-java-8.0.17.jar!/:8.0.17]
...

我可以与此用户一起访问数据库：

> docker exec -it mysql bash -l
root@cef13b77d8c6:/# mysql -uspringuser -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 8.0.1-dmr MySQL Community Server (GPL)
...
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| db_example         |
| information_schema |
+--------------------+
2 rows in set (0.00 sec)

看来我的用户存在并且可以通过这种方式访问数据库，而不能从Spring Boot应用程序访问。有什么我想念的吗？我不确定要尝试在Docker容器上连接MySQL的事实是否需要在Spring Boot应用程序中进行额外配置，而不是我遵循的教程所建议的内容，还是我是否需要使容器更多？实例化时可见” ...任何帮助将不胜感激。

使用MySQL Docker容器的Spring Boot JPA-用户被拒绝访问

0 个答案: