MyBatis-Plus 无法抽离公用属性作为父类

当前使用版本(必填,否则不予处理)

 <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.5.3.1</version>
    </dependency>

该问题是如何引起的？(确定最新版也有问题再提!!!)

早期版本试过是可以的，但是忘记用的是哪个版本了。

重现步骤(如果有就写完整)

抽离id、createTime、updateTime作为父类属性，实体类去继承父类就会触发异常。 不继承属性写在实体类中，不存在异常。

报错信息

Cause: java.lang.IllegalStateException: Type handler was null on parameter mapping for property '_handledType'. It was either not specified and/or could not be found for the javaType (java.lang.Class) : jdbcType (null) combination.

Comment From: xiaoizichao

Caused by: org.apache.ibatis.exceptions.PersistenceException:

Error updating database. Cause: java.lang.IllegalStateException: Type handler was null on parameter mapping for property '_handledType'. It was either not specified and/or could not be found for the javaType (java.lang.Class) : jdbcType (null) combination.

The error may exist in com/qzkj/full/house/dal/dao/UserMapper.java (best guess)

The error may involve com.qzkj.full.house.dal.dao.UserMapper.insert

The error occurred while executing an update

Cause: java.lang.IllegalStateException: Type handler was null on parameter mapping for property '_handledType'. It was either not specified and/or could not be found for the javaType (java.lang.Class) : jdbcType (null) combination.

at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:196)
at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:181)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427)
... 81 more

Caused by: java.lang.IllegalStateException: Type handler was null on parameter mapping for property '_handledType'. It was either not specified and/or could not be found for the javaType (java.lang.Class) : jdbcType (null) combination. at org.apache.ibatis.mapping.ParameterMapping$Builder.validate(ParameterMapping.java:119) at org.apache.ibatis.mapping.ParameterMapping$Builder.build(ParameterMapping.java:104) at org.apache.ibatis.builder.SqlSourceBuilder$ParameterMappingTokenHandler.buildParameterMapping(SqlSourceBuilder.java:143) at org.apache.ibatis.builder.SqlSourceBuilder$ParameterMappingTokenHandler.handleToken(SqlSourceBuilder.java:87) at org.apache.ibatis.parsing.GenericTokenParser.parse(GenericTokenParser.java:77) at org.apache.ibatis.builder.SqlSourceBuilder.parse(SqlSourceBuilder.java:50) at org.apache.ibatis.scripting.xmltags.DynamicSqlSource.getBoundSql(DynamicSqlSource.java:42) at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:305) at org.apache.ibatis.executor.statement.BaseStatementHandler.(BaseStatementHandler.java:64) at org.apache.ibatis.executor.statement.PreparedStatementHandler.(PreparedStatementHandler.java:41) at org.apache.ibatis.executor.statement.RoutingStatementHandler.(RoutingStatementHandler.java:46) at org.apache.ibatis.session.Configuration.newStatementHandler(Configuration.java:690) at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:48) at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117) at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) at java.base/java.lang.reflect.Method.invoke(Method.java:578) at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49) at com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor.intercept(MybatisPlusInterceptor.java:106) at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:62) at jdk.proxy2/jdk.proxy2.$Proxy144.update(Unknown Source) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:194) ... 85 more

Comment From: nieqiurong

提供一下复现工程.

Comment From: xiaoizichao

full_house.zip

Comment From: xiaoizichao

User类只要继承EntryPo就会报错 。现在测试用例里头是正常可以插入的，你试试

Comment From: nieqiurong

User类只要继承EntryPo就会报错 。现在测试用例里头是正常可以插入的，你试试

我下载排查看看

Comment From: nieqiurong

看着_handledType是你继承SerializableSerializer过来的属性字段.

Comment From: houkunlin

我的父类是完全没问题的

估计是 com.fasterxml.jackson.databind.ser.std.SerializableSerializer 引起的问题

Comment From: xiaoizichao

嗯嗯 ，我看错了 不好意思 。