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SpringBoot学习3之数据库集成mybatis
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作为一个Web框架，必然要与数据库打交道，这里介绍了如何将SpringBoot与mybatis进行集成的方法
添加相关依赖
pom.xml如下
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<!-- 使用数据源 -->
<dependency>
<groupId>com.alibaba
</groupId>
<artifactId>druid
</artifactId>
<version>1.0.14
</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql
</groupId>
<artifactId>mysql-connector-java
</artifactId>
<scope>runtime
</scope>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot
</groupId>
<artifactId>mybatis-spring-boot-starter
</artifactId>
<version>1.1.1
</version>
</dependency>
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在配置文件application-dev.yml中配置
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spring:
datasource:
url: jdbc:mysql://10.31.85.33:3306/School?useUnicode=true&characterEncoding=utf-8&autoReconnect=true&zeroDateTimeBehavior=convertToNull
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
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创建实体类
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public
class User {
private Integer id;
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
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创建Mapper接口
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public
interface UserMapper {
(
"SELECT * FROM user WHERE user.user_id = #{userId}")
({
(column =
"user_id", property =
"id"),
(column =
"user_name", property =
"name")
})
User getById(@Param("userId") long houseId);
}
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创建Service
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public
class UserService {
private UserMapper userMapper;
public User getById(long id) {
return userMapper.getById(id);
}
}
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Controller中调用
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private UserService userService;
(
"/{id}")
public String getById(@PathVariable("id") int id, Model model) {
model.addAttribute(
"user", userService.getById(id));
return
"show";
}
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查询成功!
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