一.项目说明 | KWAN的解忧杂货铺

# 一.项目说明

# 1.项目地址

# 2.项目结构

# 二.配置文件

# 1.pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.kwan</groupId>
    <artifactId>SpringBoot-kwan</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SpringBoot-kwan</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.3</version>
        </dependency>
        <!--        lang3-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.9</version>
        </dependency>
        <!--mybatis-plus的springboot支持-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.3</version>
        </dependency>
        <!--mysql驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>
        <!--简化代码的工具包-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!--测试-->
        <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>
    </build>
</project>

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76

# 2.application.yaml

server:
  port: 8761

swagger:
  enable: true

#兼容swagger配置
spring:
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher
  # mysql
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/kwan?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
    username: root
    password: 716288qwe

#mybatis-plus配置
mybatis-plus:
  configuration:
    map-underscore-to-camel-case: true
    call-setters-on-nulls: true
    auto-mapping-behavior: full
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath*:mapper/**/*Mapper.xml
  global-config:
    banner: false
    # 逻辑删除配置
    db-config:
      id-type: AUTO
      logic-delete-field: delFlag
      logic-delete-value: 1
      logic-not-delete-value: 0
      table-underline: true

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

# 3.config

@MapperScan("com.kwan.springbootkwan.mapper")//扫描我们的mapper文件夹 这里添加了@MapperScan注解就不需要Springboot启动类上加入@MapperScan注解了
@EnableTransactionManagement //事务控制
@Configuration //配置类
public class MyBatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        //注册乐观锁插件
        interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
        //分页插件
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

# 4.启动类

@EnableScheduling
@SpringBootApplication
public class SpringBootKwanApplication {

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

}

1
2
3
4
5
6
7
8
9

# 三.业务代码

# 1.test

@SpringBootTest
public class UserServiceImplTest {

    @Autowired
    private UserMapper userService;

    @Test
    public void queryAll() {
        User user = userService.selectById(1);
        System.out.println(user);
    }
}

1
2
3
4
5
6
7
8
9
10
11
12

# 2.Controller

@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping(value = "/all", method = RequestMethod.GET)
    public List<User> addAdvertise() {
        return userService.getUsers();
    }

    @RequestMapping(value = "/getUserById/{id}", method = RequestMethod.GET)
    public User getUserById(@PathVariable Integer id) {
        return userService.getUserById(id);
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

# 3.User

@Data
@Builder
@TableName(value = "user")
public class User   {
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;
    private String name;
    private String sex;
    private String pwd;
    private String email;
}

1
2
3
4
5
6
7
8
9
10
11

# 4.Service

public interface IUserService extends IService<User> {

    /**
     * 获取所有用户
     *
     * @return
     */
    List<User> getUsers();

    /**
     * 获取一个用户
     *
     * @return
     */
    User getUserById(Integer id);

}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public List<User> getUsers() {
        return userMapper.selectList(null);
    }

    @Override
    public User getUserById(Integer id) {
        return userMapper.selectById(id);
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

# 5.Mapper

//@Mapper
@Repository // 代表持久层
public interface UserMapper extends BaseMapper<User> {

}

1
2
3
4
5

← 05-SpringBoot高阶 07-Quartz总结 →