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当我测试该方法时，我得到了这个错误 

(not found): com.timmy.mapper.UserMapper.selectAllUsers

所以我尝试解决这个问题，但我没有看到任何错误我检查了映射器命名空间、映射器方法名称、@mapperScan 路径和我扫描映射器的路径，但它似乎都是正确的

项目结构项目
结构

application.yml 设置

mybatis-plus:
   mapper-locations: classpath:com/timmy/mapper/*.xml
   type-aliases-package: com.timmy.domain
   global-config:
      db-config:
      table-prefix: "tb_"
      id-type: auto
   configuration:
       auto-mapping-behavior: full

 spring:
   datasource:
     druid:
       driver-class-name: com.mysql.cj.jdbc.Driver
       url: jdbc:mysql://localhost:3306/mp? 
       serverTimezone=GMT%2b8&useUnicode=true&characterEncoding=UTF-8
       username: root
       password: timmy072869

用户映射器.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="com.timmy.mapper.UserMapper">
  <resultMap id="userMap" type="user">
    <id column="id" property="id" jdbcType="INTEGER"/>
  </resultMap>

  <select id="selectAllUsers" resultMap="userMap">
    select * from tb_user
  </select>
 </mapper>

用户映射器.java

  package com.Timmy. mapper;

       import com.baomidou.mybatisplus.core.mapper.BaseMapper;
       import com.timmy.domain.User;
       import org.apache.ibatis.annotations.Mapper;
       import org.springframework.stereotype.Component;
       import org.springframework.stereotype.Repository;

       import java.util.List;

       @Component
       public interface UserMapper extends BaseMapper<User> {
             List<User> selectAllUsers();
       }

pom.xml

       <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.4.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
        <version>1.2.8</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-logging</artifactId>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>


    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <excludes>
                    <exclude>
                        <groupId>org.projectlombok</groupId>
                        <artifactId>lombok</artifactId>
                    </exclude>
                </excludes>
            </configuration>
        </plugin>

    </plugins>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.xml</include>
                <include>**/*.properties</include>
                <include>**/*.yml</include>
            </includes>
            <filtering>false</filtering>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.xml</include>
                <include>**/*.properties</include>
                <include>**/*.yml</include>
            </includes>
            <filtering>false</filtering>
        </resource>
    </resources>
</build>

应用程序.java

 @MapperScan("com.timmy.mapper")
 @SpringBootApplication(scanBasePackages = "com.timmy.*")
  public class Application {

      public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
       }

       @Bean
       public MybatisPlusInterceptor mybatisPlusInterceptor() {
           MybatisPlusInterceptor interceptor = new 
           MybatisPlusInterceptor();
           interceptor.addInnerInterceptor(new 
           PaginationInnerInterceptor(DbType.MYSQL));
           return interceptor;
        }
     }

我检查了很多次，但没有发现任何问题，我错过了什么吗？请

4

0 回答 0