项目中需要用到Mybatis的插件,配置插件的时候需要自定义SqlSessionFactory

网上的信息不太准确,本文记录订正并共享大家。

Mybatis-plus 和Mybatis 是兼容的。

所以网上的配置 mybatis 的SqlSessionFactory 的方法基本上可行,但是对于mybatis-plus 的一些特性会丢失
例如

@TableField(fill = FieldFill.INSERT)
注解

正确的配置方式:

@Component
public class DateAutoFillHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {

        this.setFieldValByName("createTime", new Date(), metaObject);
        this.setFieldValByName("modifyTime", new Date(), metaObject);
    }

    @Override
    public void updateFill(MetaObject metaObject) {

        this.setFieldValByName("modifyTime", new Date(), metaObject);
    }
}
   @Autowired
    MybatisPlusInterceptor mybatisPlusInterceptor;

    @Autowired
    SqlPrintInterceptor sqlPrintInterceptor;



  @Bean(name = "globalConfig")
    public GlobalConfig globalConfig(@Qualifier("dateAutoFillHandler") DateAutoFillHandler dateAutoFillHandler) {
        GlobalConfig globalConfig = new GlobalConfig();
        globalConfig.setMetaObjectHandler(dateAutoFillHandler);
        return globalConfig;
    }

    /**
     * mybatis-plus sqlSessionFactory config
     *
     * @param ds
     * @param globalConfig
     * @return
     * @throws Exception
     */
    @Bean(name = "sqlSessionFactory")
    @Primary
    public SqlSessionFactory sqlSessionFactory(@Qualifier("db1") DataSource ds, @Qualifier("globalConfig") GlobalConfig globalConfig) throws Exception {
        MybatisSqlSessionFactoryBean factoryBean = new MybatisSqlSessionFactoryBean();
        factoryBean.setPlugins(new Interceptor[]{mybatisPlusInterceptor, sqlPrintInterceptor});
        factoryBean.setDataSource(ds);

        MybatisConfiguration configuration = new MybatisConfiguration();
        configuration.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
        configuration.setJdbcTypeForNull(JdbcType.NULL);
        factoryBean.setConfiguration(configuration);
        factoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        factoryBean.setGlobalConfig(globalConfig);

        return factoryBean.getObject();
    }

这样 mybatis-plus 自定义sqlSessionFactory 就配置好了

参考资料:https://www.fancv/article/1646836381

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