升级mybatisplus从3.1.2到3.5.2错误修复记录

• 原来的mybatis-config.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="jdbcTypeForNull" value="NULL"/>
        <setting name="logImpl" value="SLF4J"/>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <plugins>
        <!-- 分页插件 -->
        <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor">
        </plugin>
        <!-- 乐观锁插件 -->
        <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor">
        </plugin>
    </plugins>
</configuration>

升级mybatisplus从3.1.2->3.5.2版本后，PaginationInterceptor和OptimisticLockerInterceptor类找不到，查找新包以后，这两个类和路径已经改了，再改成：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="jdbcTypeForNull" value="NULL"/>
        <setting name="logImpl" value="SLF4J"/>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <plugins>
        <!-- 分页插件 -->
        <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor">
        </plugin>
        <!-- 乐观锁插件 -->
        <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor">
        </plugin>
    </plugins>
</configuration>

发现还是报错，提示：PaginationInnerInterceptor cannot be cast to org.apache.ibatis.plugin.Interceptor

查看官方文档，需要这样配置才正确：

• 正确的xm配置

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="jdbcTypeForNull" value="NULL"/>
        <setting name="logImpl" value="SLF4J"/>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    <plugins>
        <plugin interceptor="com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor">
            <!-- 分页插件 -->
            <property name="@page" value="com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor"/>
            <!-- 乐观锁插件 -->
            <property name="@version" value="com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor"/>
        </plugin>
    </plugins>
</configuration>