Exception in thread "main" java.lang.RuntimeException: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/mybatis/mapper/StudentMapper.xml at com.mybatis.util.MyBatisSqlSessionFactory.getSqlSessionFactory(MyBatisSqlSessionFactory.java:33) at com.mybatis.util.MyBatisSqlSessionFactory.main(MyBatisSqlSessionFactory.java:44) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/mybatis/mapper/StudentMapper.xml at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:106) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:89) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:77) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:63) at com.mybatis.util.MyBatisSqlSessionFactory.getSqlSessionFactory(MyBatisSqlSessionFactory.java:31) ... 6 more Caused by: java.io.IOException: Could not find resource com/mybatis/mapper/StudentMapper.xml at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:108) at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:95) at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:315) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:104) ... 10 more
最终通过上网查找找到了三种解决方案,现在整理总结!希望可以帮助到其他人!
在说解决方案之前,先申明环境!用的开发工具是IDEA ,项目构建使用Maven!网上一些教程使用的Eclipse开发工具,项目是普通的java web项目,所以开发工具和构建项目不同就会存在一些出入(坑)!
原因:IDEA是不会编译src的java目录的xml文件,所以在Mybatis的配置文件中找不到xml文件!(也有可能是Maven构建项目的问题,网上教程很多项目是普通的Java web项目,所以可以放到src下面也能读取到)
解决方案1:
不将xml放到src目录下面,将xxxMapper.xml放到Maven构建的resource目录下面!
解决方案2:
在Maven的pom文件中,添加下面代码:
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> </resources> </build>
解决方案3:
我测试时候只有 mapper resource 这种方式加载不到资源,其他的url class和package都可以,如果想解决问题的话,可以不使用resource这种方式!