94 lines
2.5 KiB
Markdown
94 lines
2.5 KiB
Markdown
---
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title: Mybaits连接MySQL8.0版本的配置
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date: 2022-04-13 00:15:50.985
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updated: 2022-09-05 00:15:50.985
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url: https://hhdxw.top/archives/36
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categories:
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- JAVA EE
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tags:
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- JAVA EE
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---
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# Mybaits连接MySQL8.0版本的配置问题
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## 特别要注意 properties 文件中不能有**任何**错误，以及空格
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## 1.更改 maven 文件
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```java
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>8.0.28</version>
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</dependency>
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```
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## 2.修改 Maven 配置文件
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mysql 8.0 以后的版本驱动为
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```java
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com.mysql.cj.jdbc.Dirver
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```
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url 一般为
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```java
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jdbc:mysql://localhost:3306/mybatis
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```
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如果不能用的话，添加以下代码
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```java
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?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT&nullCatalogMeansCurrent = true
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```
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来添加编码集
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## 3.使用 xml 配置方式
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```java
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<environments default="mysql">
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<!-- 配置mysql环境-->
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<environment id="mysql">
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<!-- 配置事务-->
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<transactionManager type="JDBC"></transactionManager>
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<!-- 配置连接池-->
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<dataSource type="POOLED">
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<property name="driver" value="com.mysql.cj.jdbc.Driver"/>
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<property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT&nullCatalogMeansCurrent = true"/>
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<property name="username" value="root"/>
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<property name="password" value="8520"/>
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</dataSource>
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</environment>
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</environments>
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```
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## 4.使用的是 properties 文件的配置方式
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```java
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jdbc.driver=com.mysql.cj.jdbc.Driver
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jdbc.url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT&nullCatalogMeansCurrent = true
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jdbc.username=root
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jdbc.password=8520
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```
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```java
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<properties resource="db.properties"/>
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<!-- 配置环境-->
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<environments default="mysql">
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<!-- 配置mysql环境-->
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<environment id="mysql">
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<!-- 配置事务-->
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<transactionManager type="JDBC"></transactionManager>
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<!-- 配置连接池-->
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<dataSource type="POOLED">
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<property name="driver" value="${jdbc.driver}"/>
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<property name="url" value="${jdbc.url}"/>
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<property name="username" value="${jdbc.username}"/>
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<property name="password" value="${jdbc.password}"/>
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</dataSource>
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</environment>
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</environments>
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``` |