Mapped Statements collection does not contain value for
2015-03-19 11:56
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Mapped Statements collection does not contain value for后面是什么类什么方法之类的:
错误原因有几种:
1、mapper.xml中没有加入namespace
2、mapper.xml中的方法和接口mapper的方法不对应
3、mapper.xml没有加入到mybatis-config.xml中(即总的配置文件),例外:配置了mapper文件的包路径的除外
4、mapper.xml文件名和所写的mapper名称不相同。
<mapper namespace="com.sitech.mapper.StudentMapper">
空间中一定要写上Mapper的名称,否则就会报错。
错误原因有几种:
1、mapper.xml中没有加入namespace
2、mapper.xml中的方法和接口mapper的方法不对应
3、mapper.xml没有加入到mybatis-config.xml中(即总的配置文件),例外:配置了mapper文件的包路径的除外
4、mapper.xml文件名和所写的mapper名称不相同。
<mapper namespace="com.sitech.mapper.StudentMapper">
空间中一定要写上Mapper的名称,否则就会报错。
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