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引入依赖
在pom文件引入mybatis-spring-boot-starter的依赖:
<dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter<artifactId> <version>1.3.0</version> </dependency>
引入数据库连接依赖:
<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>
引入数据源
application.properties配置文件中引入数据源:
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
这样,springboot就可以访问数据了。
创建数据库表
建表语句:
-- 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');
具体实现
这篇文篇通过注解的形式实现。
创建实体:
public class Account { private int id ; private String name ; private double money; setter… getter… }
dao层
@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(); }
service层
@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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转载于:https://www.cnblogs.com/sunnysunny/p/10474849.html
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