{ "timestamp": "2025-10-02T11:04:25.374+0000", "status": 500, "error": "Internal Server Error", "message": "Invalid bound statement (not found): com.daqin.demo251001.mapper.UserMapper.getByUserName", "path": "/goods/getByUserName" }我发送给Apifox是http://localhost:9002/goods/getByUserName?name=张三 为什么会是500哪里错了?
错误分析
根据错误信息 `Invalid bound statement (not found): com.daqin.demo251001.mapper.UserMapper.getByUserName`，这是一个MyBatis绑定异常，表示找不到对应的SQL语句。
可能原因及解决方案
1. Mapper XML文件位置或命名问题
-
确保 [UserMapper.xml](file://D:\SUM\代码\demo251001\target\classes\generator\mapper\UserMapper.xml) 文件位于正确目录：`src/main/resources/mapper/`
-
文件名必须与Mapper接口名一致：[UserMapper.xml](file://D:\SUM\代码\demo251001\target\classes\generator\mapper\UserMapper.xml)
2. XML文件中缺少SQL定义
在 [UserMapper.xml](file://D:\SUM\代码\demo251001\target\classes\generator\mapper\UserMapper.xml) 中添加 [getByUserName](file://D:\SUM\代码\demo251001\src\main\java\com\daqin\demo251001\mapper\UserMapper.java#L16-L16) 方法对应的SQL语句：
```xml
<select id="getByUserName" parameterType="string" resultType="com.daqin.demo251001.vo.GoodsMsgVo">
SELECT * FROM user WHERE name = #{name}
</select>
```
3. 检查Mapper接口与XML的匹配
确保以下几点：
-
UserMapper\](file://D:\\SUM\\代码\\demo251001\\src\\main\\java\\com\\daqin\\demo251001\\mapper\\UserMapper.java#L14-L17) 接口中的 \[getByUserName\](file://D:\\SUM\\代码\\demo251001\\src\\main\\java\\com\\daqin\\demo251001\\mapper\\UserMapper.java#L16-L16) 方法签名与XML中定义一致
-
XML中 `<select>` 标签的 [id](file://D:\SUM\代码\demo251001\src\main\java\com\daqin\demo251001\domain\User.java#L14-L15) 属性值为 [getByUserName](file://D:\SUM\代码\demo251001\src\main\java\com\daqin\demo251001\mapper\UserMapper.java#L16-L16)
4. 检查MyBatis配置
确认 [application.yml](file://D:\SUM\代码\demo251001\src\main\resources\application.yml) 中的MyBatis配置正确：
```yaml
mybatis-plus:
mapper-locations: classpath:mapper/*.xml
```
完成以上检查和修改后重启应用，问题应该能够解决。