Could not autowire No beans of 'UserDAO' type found more

r囧r小猫 2022-02-18 13:23 134阅读 0赞

intellig idea 使用@Resource或者@Autowire报错，出现红色波浪线；在确定不是代码出错的问题下，

可以隐藏这个提示

报错提示：

Could not autowire. No beans of 'UserDAO' type found。(Ctrl+F1)  Checks autowiring problems in a bean class.

@Mapper    //使用Mapper注解方式，开启扫描public interface UserDAO {    String TABLE_NAME = "user";    String INSERT_FIELDS = " name, password, salt, head_url ";    String SELECT_FIELDS = " id, name, password, salt, head_url ";    @Insert({            "insert into ", TABLE_NAME, "(", INSERT_FIELDS,            ") Values (#{name}, #{password}, #{salt}, #{headUrl})"    })    int addUser(User user);    @Select({
        "select ", SELECT_FIELDS, " from ", TABLE_NAME, " where id=#{id}"})    User selectById(int id);    @Update({
        "update ", TABLE_NAME, " set password = #{password} where id=#{id}"})    void updatePassword(User user /*set password= #{password} where id=#{id}*/);    @Delete({
        "delete from ", TABLE_NAME, " where id = #{id}"})    void deleteById(int id);}

@Mapperpublic interface NewsDAO {    String TABLE_NAME = "news";    String INSERT_FIELDS = " title, link, image, like_count, comment_count,created_date,user_id ";    String SELECT_FIELDS = " id, " + INSERT_FIELDS;    @Insert({            "insert into ", TABLE_NAME, "(", INSERT_FIELDS,            ") Values (#{title},#{link},#{image},#{likeCount}, #{commentCount},#{createdDate},#{userId})"    })    int addNews(News news);    @Select({
        "select ", SELECT_FIELDS, " from ", TABLE_NAME, " where id=#{id}"})    News selectById(int id);    List<News> selectByUserIdAndOffset(@Param("userId") int userId, @Param("offset") int offset,                                       @Param("limit") int limit);}

@RunWith(SpringJUnit4ClassRunner.class)@SpringApplicationConfiguration(classes = ToutiaoApplication.class)//@WebAppConfiguration  这行会修改默认的启动路径需要注释掉@Sql({
        "/init-schema.sql"})public class InitDatabaseTests { @Autowired    //报错Could not autowire. No beans of 'UserDAO' type found. more... NewsDAO newsDAO; @Autowired UserDAO userDAO;        ...}

解决办法：

Settings - Editor - Inspections - Spring - Spring Core - Code - Autowiring for Bean Class 勾去掉  
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[70]: /images/20220218/3426217390fd4550badb4184399c4c1f.png