MySQL批量SaveOrUpdate与Mybatis配置

MySQL批量SaveOrUpdate可以通过使用INSERT INTO ... ON DUPLICATE KEY UPDATE语句实现。在Mybatis中，可以使用批量插入的方式来实现类似的功能。具体实现方法如下：

1. 在Mapper.xml文件中定义一个批量插入语句，示例代码如下：

<insert id="batchSaveOrUpdate" parameterType="java.util.List">
    INSERT INTO table_name (column1, column2, column3)
    VALUES
    <foreach collection="list" item="item" separator=",">
        (#{item.column1}, #{item.column2}, #{item.column3})
    </foreach>
    ON DUPLICATE KEY UPDATE
    column1 = VALUES(column1),
    column2 = VALUES(column2),
    column3 = VALUES(column3)
</insert>

2. 在Mapper接口中定义对应的方法，示例代码如下：

public interface TableMapper {
    void batchSaveOrUpdate(List<Table> tableList);
}

3. 在Mybatis的配置文件中开启批量插入功能，示例配置如下：

<configuration>
    <settings>
        <setting name="jdbcTypeForNull" value="NULL" />
        <setting name="cacheEnabled" value="true" />
        <setting name="lazyLoadingEnabled" value="true" />
        <setting name="aggressiveLazyLoading" value="false" />
        <setting name="multipleResultSetsEnabled" value="true" />
        <setting name="useColumnLabel" value="true" />
        <setting name="useGeneratedKeys" value="false" />
        <setting name="autoMappingBehavior" value="PARTIAL" />
        <setting name="autoMappingUnknownColumnBehavior" value="WARNING" />
        <setting name="defaultExecutorType" value="SIMPLE" />
        <setting name="defaultStatementTimeout" value="25" />
        <setting name="defaultFetchSize" value="100" />
        <setting name="safeRowBoundsEnabled" value="false" />
        <setting name="mapUnderscoreToCamelCase" value="false" />
        <setting name="localCacheScope" value="SESSION" />
        <setting name="jdbcTypeForNull" value="OTHER" />
        <setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString" />
        <setting name="defaultScriptingLanguage" value="org.apache.ibatis.scripting.xmltags.XMLLanguageDriver" />
        <setting name="callSettersOnNulls" value="false" />
        <setting name="logPrefix" value="mybatis." />
        <setting name="logImpl" value="LOG4J" />
        <setting name="configurationFactory" value="org.apache.ibatis.builder.xml.XMLConfigBuilder" />
        <setting name="defaultEnumTypeHandler" value="org.apache.ibatis.type.EnumOrdinalTypeHandler" />
        <setting name="defaultDateTypeHandler" value="org.apache.ibatis.type.LocalDateTimeTypeHandler" />
        <setting name="defaultMapTypeHandler" value="org.apache.ibatis.type.MapTypeHandler" />
        <setting name="defaultNumberTypeHandler" value="org.apache.ibatis.type.DoubleTypeHandler" />
        <setting name="defaultStringTypeHandler" value="org.apache.ibatis.type.StringTypeHandler" />
        <setting name="defaultJdbcType" value="OTHER" />
        <setting name="safeResultHandlerEnabled" value="true" />
        <setting name="defaultExecutorType" value="BATCH" />
    </settings>
</configuration>

以上就是MySQL批量SaveOrUpdate与Mybatis配置的相关内容，希望对你有所帮助。