问题描述
我正在开发一个 Spring JPA 应用程序，使用 MySQL 作为数据库.我确保所有 spring-jpa 库、hibernate 和 mysql-connector-java 都已加载.
I'm working on a Spring JPA Application, using MySQL as database. I ensured that all spring-jpa libraries, hibernate and mysql-connector-java is loaded.
我正在运行一个 mysql 5 实例.这是我的 application.properties 文件的摘录:
I'm running a mysql 5 instance. Here is a excerpt of my application.properties file:
spring.jpa.show-sql=false
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.datasource.url=jdbc:mysql://localhost/mydatabase
spring.datasource.username=myuser
spring.datasource.password=SUPERSECRET
spring.datasource.driverClassName=com.mysql.jdbc.Driver
在执行集成测试时，spring 正常启动，但在创建休眠 SessionFactory 时失败，除了:
When executing an integration test, spring startsup properly but fails on creating the hibernate SessionFactory, with the exception:
org.hibernate.MappingException: No Dialect mapping for JDBC type: 1111
我认为我的方言应该是 Mysql5Dialect，我也尝试过明确说明 InnoDB 的方言，以及不指示版本 5 的两个方言选项.但我总是以相同的无方言映射 JDBC 类型"告终:1111'消息.我的 application.properties 文件位于 test/resources 源文件夹中.它被 JUnit 测试运行器识别(我之前因为输入错误而得到一个异常).
I think my dialects should be Mysql5Dialect, I also tried the one explicitly stating InnoDB, and the two dialect options which don't indicate the version 5. But I always end up with the same 'No Dialect mapping for JDBC type: 1111' message.My application.properties file resides in the test/resources source folder. It is recognized by the JUnit Test runner (I previously got an exception because of an typo in it).
我设置的属性有误吗?我找不到关于这些属性名称的一些官方文档，但在这个 stackoverflow 答案中找到了一个提示:https://stackoverflow.com/a/25941616/1735497
Are the properties I'm setting wrong? I couldn't find some official documentation on these property names but found a hint in this stackoverflow answer: https://stackoverflow.com/a/25941616/1735497
期待您的回答，谢谢！
顺便说一句，该应用程序已经在使用 spring boot.
BTW The application is already using spring boot.
推荐答案
这里是基于 SubOptimal 评论的答案:
Here the answer based on the comment from SubOptimal:
错误消息实际上是说一种列类型无法通过休眠映射到数据库类型.就我而言，它是我在某些实体中用作主键的 java.util.UUID 类型.只需应用注释 @Type(type="uuid-char")(对于 postgres @Type(type="pg-uuid"))
The error message actually says that one column type cannot be mapped to a database type by hibernate.In my case it was the java.util.UUID type I use as primary key in some of my entities. Just apply the annotation @Type(type="uuid-char") (for postgres @Type(type="pg-uuid"))
这篇关于JDBC 类型没有方言映射:1111的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！