Mybatis报错:Could not find resource mybatis-conf.xml

Mybatis报错:Could not find resource mybatis-conf.xml

报错截图:

报错内容:

java.io.IOException: Could not find resource mybatis-conf.xml

	at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:114)
	at org.apache.ibatis.io.Resources.getResourceAsStream(Resources.java:100)
	at org.apache.ibatis.io.Resources.getResourceAsReader(Resources.java:160)
	at MybatisAdvancedTest.testQueryByNo(MybatisAdvancedTest.java:23)

CSDN上jeanFlower在文章说这是IDEA默认不编译src目录下的xml文件造成的(在后面也贴出他的解决办法),而我的mybatis-config.xml文件时在resources目录下,Debug进去观看流程发现Resources.getResourceAsReader根本没有加载到这个xml配置文件.

代码示意:

    // 根据学号查询一个学生
    @Test
    public  void testQueryByNo() throws IOException {
        String resource = "mybatis-conf.xml";
        Reader reader = Resources.getResourceAsReader(resource);

        SqlSessionFactory sessionFactory
                = new SqlSessionFactoryBuilder().build(reader);
        SqlSession session = sessionFactory.openSession();

        //传入StudentMapper接口，返回该接口的mapper代理对象studentMapper
        StudentMapper studentMapper = session.getMapper(StudentMapper.class);//接口

        //通过mapper代理对象studentMapper，来调用IStudentMapper接口中的方法
        Student student = studentMapper.queryStudentByNo(1);

        System.out.println(student+"****");
        session.close();
    }

解决办法:

将上面的Test方法中这部分代码进行替换:

    String resource = "mybatis-conf.xml";
    Reader reader = Resources.getResourceAsReader(resource);

替换成:

	Reader reader = Resources.getResourceAsReader("mybatis-conf.xml");

原因暂时未知,明天Debug更新

如果是xml未被idea正常编译的问题,例如IDEA开发,但是没有将mybatis-config.xml放在resources目录下,例如放在src/main/java下,那么在pom.xml末尾添加build代码,告诉idea对我们的配置文件进行编译:

解决方案二

<build>
    <resources>
        <resource>
        <directory>src/main/java</directory>
           	 <includes>
            	<include>**/*.xml</include>
             </includes>
         </resource>
    </resources>
</build>

解决方案三

将配置文件移到resources目录下,rebuild我们的项目.