tk.mapper(通用mapper)出现的问题:Error invoking SqlProvider method (tk.mybatis.mapper.provider.SpecialProvid
今天在SpringBoot上集成tk.mapper出现如下错误:
Error invoking SqlProvider method (tk.mybatis.mapper.provider.SpecialProvider.dynamicSQL)
java.lang.NoSuchMethodException: tk.mybatis.mapper.provider.SpecialProvider.<init>()
Caused by: org.apache.ibatis.builder.BuilderException: Error invoking SqlProvider method (tk.mybatis.mapper.provider.base.BaseSelectProvider.dynamicSQL). Cause: java.lang.InstantiationException: tk.mybatis.mapper.provider.base.BaseSelectProvider
at org.apache.ibatis.builder.annotation.ProviderSqlSource.createSqlSource(ProviderSqlSource.java:134) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.builder.annotation.ProviderSqlSource.getBoundSql(ProviderSqlSource.java:102) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.mapping.MappedStatement.getBoundSql(MappedStatement.java:292) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) ~[mybatis-3.4.6.jar:3.4.6]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_60]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_60]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_60]
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_60]
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ~[mybatis-spring-1.3.2.jar:1.3.2]
... 58 more
查阅相关资料,通常是通用 Mapper 没有配置好,没有对 MyBatis 方法初始化造成的。常见的判断方法就是看看其他非 Example 的通用方法能否执行,如果不能执行就是配置的问题。如果能正常执行,可能就是第二种情况。
参考资料:通用Mapper问题
处理方式:
将SpringBoot 启动类中的@MapperScan
注解引入的包由
org.mybatis.spring.annotation.MapperScan
替换成:
tk.mybatis.spring.annotation.MapperScan
引入的依赖为:
<!-- MyBatis 通用 Mapper --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper-spring-boot-starter</artifactId> <version>2.0.2</version> </dependency>
作者:码农飞哥
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