SpringBoot——Mybatis-xml（十四）
依赖
1
2
3
4
5
| <dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
|
配置
1
2
3
| mybatis:
mapper-locations: classpath:mapping/*Mapper.xml
type-aliases-package: com.qn.eneity
|
实体类
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
| package com.qn.eneity;
public class User {
private Integer id;
private String userName;
private String passWord;
private String realName;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public String getRealName() {
return realName;
}
public void setRealName(String realName) {
this.realName = realName;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", userName='" + userName + '\'' +
", passWord='" + passWord + '\'' +
", realName='" + realName + '\'' +
'}';
}
}
|
Mapper.xml
1
2
3
4
5
6
7
8
9
10
11
| <?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.qn.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.qn.eneity.User">
<result column="id" jdbcType="INTEGER" property="id"/>
<result column="userName" jdbcType="VARCHAR" property="userName"/>
<result column="passWord" jdbcType="VARCHAR" property="passWord"/>
<result column="realName" jdbcType="VARCHAR" property="realName"/>
</resultMap>
<select id="Sel" resultMap="BaseResultMap"> select * from user where id = #{id} </select>
</mapper>
|
Mapper映射类
1
2
3
4
5
6
7
8
9
| package com.qn.mapper;
import com.qn.eneity.User;
import org.springframework.stereotype.Repository;
@Repository
public interface UserMapper {
User Sel(int id);
}
|
业务类
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
| package com.qn.service;
import com.qn.eneity.User;
import com.qn.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserService {
@Autowired
UserMapper userMapper;
public User Sel(int id) {
return userMapper.Sel(id);
}
}
|
添加扫描
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
| package com.qn;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import java.util.Arrays;
@MapperScan("com.qn.mapper")
@SpringBootApplication
@ServletComponentScan
public class SpringbootDemoApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootDemoApplication.class, args);
}
@Bean
public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
return args -> {
System.out.println("Let's inspect the beans provided by Spring Boot:");
String[] beanNames = ctx.getBeanDefinitionNames();
Arrays.sort(beanNames);
for (String beanName : beanNames) {
System.out.println(beanName);
}
};
}
}
|
测试
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
| package com.qn.service;
import com.qn.eneity.User;
import org.junit.jupiter.api.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@SpringBootTest
@RunWith(SpringRunner.class)
class UserServiceTest {
@Autowired
UserService userService;
@Test
void sel() {
User user = userService.Sel(2);
System.out.println(user.toString());
}
}
|
