mybatis错误——java.io.IOException: Could not find resource com/xxx/xxxMapper.xml

旧城等待， 2023-02-25 10:15 16阅读 0赞

在学习Mybatis的时候，参考网上的教程进行简单demo的搭建，配置的没有问题，然后出现了下面的错误！

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，先申明我的环境！我会用的开发工具是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）！

**我项目的目录和xxxMapper.xml的位置如下图：**

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTcwNDI4MDkwODQwODQw][]

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！

**![不将xml放到src目录下面，将xxxMapper.xml放到Maven构建的resource目录下面！][xml_src_xxxMapper.xml_Maven_resource]解决方案2：**  
在Maven的pom文件中，添加下面代码：

[aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTcwNDI4MDkwODQwODQw]: /images/20230209/23e7d7b6d6454de79d54698edd9c132d.png
[xml_src_xxxMapper.xml_Maven_resource]: https://private.codecogs.com/gif.latex?%25u4E0D%25u5C06xml%25u653E%25u5230src%25u76EE%25u5F55%25u4E0B%25u9762%25uFF0C%25u5C06xxxMapper.xml%25u653E%25u5230Maven%25u6784%25u5EFA%25u7684resource%25u76EE%25u5F55%25u4E0B%25u9762%25uFF01