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解决java中mybatis报错:org.apache.ibatis.binding.BindingException:Invalid bound statement(not found):xx问题
作者:水巷石子
这篇文章主要介绍了解决java中mybatis报错:org.apache.ibatis.binding.BindingException:Invalid bound statement(not found):xx问题,具有很好的参考价值,希望对大家有所帮助
报错信息
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): springtransactionaldemo.demo.mapper.UserMapper.selectAll at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:235) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:53) ~[mybatis-3.5.9.jar:3.5.9] at org.apache.ibatis.binding.MapperProxy.lambda$cachedInvoker$0(MapperProxy.java:108) ......
代码如下
- UserController
/** * Created By 李柏霖 * 2024/1/13 23:01 */ package springtransactionaldemo.demo.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.ResponseBody; import springtransactionaldemo.demo.pojo.User; import springtransactionaldemo.demo.service.IUserService; import java.util.List; @Controller public class UserController { @Autowired private IUserService userService; @GetMapping("/getAllUsers") @ResponseBody public List<User> getAllUsers() { List<User> users = userService.selectAllUsers(); System.out.println(users); return users; } }
- IUserService
/** * Created By 李柏霖 * 2024/1/13 22:24 */ package springtransactionaldemo.demo.service; import springtransactionaldemo.demo.pojo.User; import java.util.List; public interface IUserService { List<User> selectAllUsers(); }
- IUserServiceImpl
/** * Created By 李柏霖 * 2024/1/13 22:25 */ package springtransactionaldemo.demo.service.Impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import springtransactionaldemo.demo.mapper.UserMapper; import springtransactionaldemo.demo.pojo.User; import springtransactionaldemo.demo.service.IUserService; import java.util.List; @Service public class IUserServiceImpl implements IUserService { @Autowired private UserMapper userMapper; @Override @Transactional public List<User> selectAllUsers() { return userMapper.selectAll(); } }
- UserMapper
/** * Created By 李柏霖 * 2024/1/13 22:22 */ package springtransactionaldemo.demo.mapper; import org.apache.ibatis.annotations.Mapper; import springtransactionaldemo.demo.pojo.User; import java.util.List; @Mapper public interface UserMapper { List<User> selectAll(); }
- UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="springtransactionaldemo.demo.mapper.UserMapper"> <!-- MyBatis 映射文件 --> <select id="selectAll" resultType="springtransactionaldemo.demo.pojo.User"> SELECT * FROM user </select> </mapper>
- DemoApplication
package springtransactionaldemo.demo; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.transaction.annotation.EnableTransactionManagement; @SpringBootApplication @EnableTransactionManagement @MapperScan("springtransactionaldemo.demo.mapper") public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }
解决办法
在 application.properties文件中添加以下配置:
mybatis.mapper-locations=classpath:mapper/*.xml
拓展
上述代码中即在DemoApplication中添加了@MapperScan注解,又在UserMapper类中添加了@Mapper注解。
其实这两个只需要加一个即可。
我这边习惯全加了
代码运行展示:
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持脚本之家。
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