park - 云代码空间
——
在pom文件引入mybatis-spring-boot-starter的依赖：
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<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter<artifactId>
<version>1.3.0</version>
</dependency>
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引入数据库连接依赖：
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<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.29</version>
</dependency>
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application.properties配置文件中引入数据源：
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spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
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这样，springboot就可以访问数据了。
建表语句：
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-- create table `account`
# DROP TABLE `account` IF EXISTS
CREATE TABLE `account` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(20) NOT NULL,
`money` double DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
INSERT INTO `account` VALUES ('1', 'aaa', '1000');
INSERT INTO `account` VALUES ('2', 'bbb', '1000');
INSERT INTO `account` VALUES ('3', 'ccc', '1000');
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这篇文篇通过注解的形式实现。
“`
public class Account {
private int id ;
private String name ;
private double money;
setter…
getter…
}
“`
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@Mapper
public interface AccountMapper {
@Insert("insert into account(name, money) values(#{name}, #{money})")
int add(@Param("name") String name, @Param("money") double money);
@Update("update account set name = #{name}, money = #{money} where id = #{id}")
int update(@Param("name") String name, @Param("money") double money, @Param("id") int id);
@Delete("delete from account where id = #{id}")
int delete(int id);
@Select("select id, name as name, money as money from account where id = #{id}")
Account findAccount(@Param("id") int id);
@Select("select id, name as name, money as money from account")
List<Account> findAccountList();
}
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@Service
public class AccountService {
@Autowired
private AccountMapper accountMapper;
public int add(String name, double money) {
return accountMapper.add(name, money);
}
public int update(String name, double money, int id) {
return accountMapper.update(name, money, id);
}
public int delete(int id) {
return accountMapper.delete(id);
}
public Account findAccount(int id) {
return accountMapper.findAccount(id);
}
public List<Account> findAccountList() {
return accountMapper.findAccountList();
}
}
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