之前試過springboot 1.5.6版本整合mybatis，pom依賴如下：

<!-- mybatis start -->
<dependency>
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
	<version>1.0.0</version>
</dependency>

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

<dependency>
	<groupId>org.mybatis</groupId>
	<artifactId>mybatis-spring</artifactId>
	<version>1.2.5</version>
</dependency>
<!-- mybatis end -->
 

後來springboot升級到2.0.6，依然沿用這個pom依賴，啟動一直報錯，

Failed to parse mapping resource: 'class path resource [mapper/xml/*.xml]'; nested exception is java.io.FileNotFoundException: class path resource [mapper/xml/*.xml] cannot be opened because it does not exist

原因：

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.2.5</version>
</dependency>
 

這個依賴的version號太低了，直接刪除version即可

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
</dependency>

或者用以下依賴:

<!-- mybatis start -->
<dependency>
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
	<version>1.3.2</version>
</dependency>

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

<!-- alibaba的druid資料庫連線池 -->
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid-spring-boot-starter</artifactId>
	<version>1.1.9</version>
</dependency>
<!-- mybatis end -->