IDEA写mybatis程序，java.io.IOException:Couldnotfindresourcem

找不到mybatis-config.xml 尝试maven idea:module，不是模块构造问题 尝试检验pom.xml，在编译模块添加了解析resources内容依旧不行

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http:// .w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.example</groupId> <artifactId>untitled1</artifactId> <version>1.0-SNAPSHOT</version> <properties> <maven piler.source>8</maven piler.source> <maven piler.target>8</maven piler.target> </properties> <dependencies> <!-- MyBatis的jar包配置 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependency> <!-- MySQL驱动包的配置 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.30</version> <!-- 更新为与你的MySQL服务器版本兼容的版本 --> </dependency> </dependencies> <!-- 配置以下信息，是src/main/java目录下有xml文件 --> <build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>

再回看一下源代码

package com.mybatis.test; import java.io.IOException; import java.io.InputStream; import java.util.List; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import com.mybatis.po.MyUser; public class MyBatisTest { public static void main(String[] args) { try { InputStream config = Resources.getResourceAsStream("mybatis-config.xml"); SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(config); SqlSession ss = ssf.openSession(); MyUser mu = ss.selectOne("com.mybatis.mapper.UserMapper.selectUserById", 1); System.out.println(mu); MyUser addmu = new MyUser(); addmu.setUname("张三"); addmu.setUsex("男"); ss.insert("com.mybatis.mapper.UserMapper.addUser",addmu); MyUser updatemu = new MyUser(); updatemu.setUid(1); updatemu.setUname("杨婉莹"); updatemu.setUsex("女"); ss.update("com.mybatis.mapper.UserMapper.updateUser", updatemu); ss.delete("com.mybatis.mapper.UserMapper.deleteUser", 3); List<MyUser> listMu = ss.selectList("com.mybatis.mapper.UserMapper.selectAllUser"); for (MyUser myUser : listMu) { System.out.println(myUser); } ss mit(); ss.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }

关键在于找到resource

InputStream config = Resources.getResourceAsStream("mybatis-config.xml");

在网上也有resource目录突然罢工不生效，也就是检测不到resource目录，这边也是层级的问题 需要把resource目录设置为资源根目录，这本应该是创建项目时默认的，但是失效了我们需要重新设置一下

右键resources目录将目录标记为测试资源根目录，当图标右下角出现三条黄色横杠时就成功了。