Mybatis创建初学时遇到的几个常见错误

Mybatis常见错误

1. org.apache.ibatis.binding.BindingException: Type interface com.xv.dao.UserDao is not known to the MapperRegistry.(重点)
   

解释：没有注册mapper映射（mybatis-config.xml）
解决：去mybatis-config.xml进行注册

<mappers>
    <mapper resource="com/xv/dao/UserMapper.xml"/>
</mappers>

2. 上面的坑解决候可能会出现这个错误：The error may exist in com/kuang/dao/UserMapper.xml（重点）
   
   别忘了，maven的过滤：

<build>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>

3. java.io.IOException: Could not find resource mybatis-config.xml此处的坑一般如果不是过滤器的问题那么请看以下

注意：include不要写成了exclude，一般是赋值的情况下踩得坑！！！

4. Cannot find class: com.mysql.jdbc.driver
   

注意driver的“d”必须要大写
5.有时候可能还会有序列化问题记得序列化。