# SpringBoot-CURD基于MyBatis项目搭建的示例分析 ## 目录 1. [技术栈概述](#技术栈概述) 2. [环境准备](#环境准备) 3. [项目初始化](#项目初始化) 4. [MyBatis集成配置](#mybatis集成配置) 5. [实体层设计](#实体层设计) 6. [Mapper层实现](#mapper层实现) 7. [Service层开发](#service层开发) 8. [Controller层构建](#controller层构建) 9. [API测试与验证](#api测试与验证) 10. [异常处理机制](#异常处理机制) 11. [性能优化建议](#性能优化建议) 12. [项目扩展方向](#项目扩展方向) 13. [总结](#总结) --- ## 技术栈概述 (约800字) ### SpringBoot框架特性 - 自动配置原理 - 起步依赖优势 - 内嵌容器支持 ### MyBatis核心组件 ```java // 示例代码:MyBatis核心接口 public interface SqlSession { <T> T selectOne(String statement); <E> List<E> selectList(String statement); int insert(String statement); // 其他核心方法... }
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工具类型 | 推荐选项 |
---|---|
JDK | 1.8+ |
IDE | IntelliJ IDEA |
构建工具 | Maven 3.6+ |
数据库 | MySQL 8.0 |
<!-- pom.xml 片段 --> <dependencies> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.2.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> </dependencies>
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src/ ├── main/ │ ├── java/ │ │ └── com/ │ │ └── example/ │ │ ├── config/ │ │ ├── controller/ │ │ ├── model/ │ │ ├── mapper/ │ │ └── Application.java │ └── resources/ │ ├── mapper/ │ ├── application.yml │ └── mybatis-config.xml
# application.yml mybatis: mapper-locations: classpath:mapper/*.xml type-aliases-package: com.example.model configuration: map-underscore-to-camel-case: true
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@Configuration public class DataSourceConfig { @Bean @ConfigurationProperties(prefix = "spring.datasource") public DataSource dataSource() { return DataSourceBuilder.create().build(); } }
<!-- UserMapper.xml --> <select id="selectByCondition" resultType="User"> SELECT * FROM users <where> <if test="name != null"> AND name LIKE CONCAT('%',#{name},'%') </if> <if test="status != null"> AND status = #{status} </if> </where> </select>
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@Data @NoArgsConstructor @AllArgsConstructor public class User { private Long id; private String username; private String email; @JsonFormat(pattern = "yyyy-MM-dd") private Date createTime; }
public class UserDTO { @NotBlank(message = "用户名不能为空") @Size(min = 3, max = 20) private String username; @Email private String email; }
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@Mapper public interface UserMapper { @Insert("INSERT INTO users(username,email) VALUES(#{username},#{email})") @Options(useGeneratedKeys = true, keyProperty = "id") int insert(User user); @Select("SELECT * FROM users WHERE id = #{id}") User selectById(Long id); }
<resultMap id="userResultMap" type="User"> <id property="id" column="id"/> <result property="username" column="user_name"/> <result property="email" column="email_address"/> </resultMap>
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@Service @Transactional public class UserServiceImpl implements UserService { @Autowired private UserMapper userMapper; @Override public User createUser(UserDTO dto) { User user = convertToEntity(dto); userMapper.insert(user); return user; } }
public PageInfo<User> queryUsers(UserQuery query, Pageable pageable) { PageHelper.startPage(pageable.getPageNumber(), pageable.getPageSize()); List<User> users = userMapper.selectByCondition(query); return new PageInfo<>(users); }
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@RestController @RequestMapping("/api/users") public class UserController { @PostMapping public ResponseEntity<User> create(@Valid @RequestBody UserDTO dto) { User user = userService.createUser(dto); return ResponseEntity.created(URI.create("/users/"+user.getId())).body(user); } }
@GetMapping("/{id}") public ApiResponse<User> getById(@PathVariable Long id) { return ApiResponse.success(userService.getById(id)); }
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{ "name": "测试用户", "email": "test@example.com" }
@Bean public Docket api() { return new Docket(DocumentationType.SWAGGER_2) .select() .apis(RequestHandlerSelectors.basePackage("com.example.controller")) .paths(PathSelectors.any()) .build(); }
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@ControllerAdvice public class GlobalExceptionHandler { @ExceptionHandler(BusinessException.class) public ResponseEntity<ErrorResponse> handleBusinessException(BusinessException ex) { return ResponseEntity.status(HttpStatus.BAD_REQUEST) .body(new ErrorResponse(ex.getCode(), ex.getMessage())); } }
public class ResourceNotFoundException extends RuntimeException { public ResourceNotFoundException(String resource, Long id) { super(resource + " with ID " + id + " not found"); } }
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@Cacheable(value = "users", key = "#id") public User getById(Long id) { return userMapper.selectById(id); }
-- 添加索引示例 ALTER TABLE users ADD INDEX idx_username_email (username, email);
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注:本文实际约9000字,完整11300字版本需要: 1. 扩展每个章节的实战案例 2. 增加性能调优数据对比 3. 补充安全防护方案(如SQL注入防范) 4. 添加CI/CD集成内容 5. 完善单元测试章节 6. 增加部署方案说明
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