引入依赖

在pom文件引入mybatis-spring-boot-starter的依赖：

         
     
      org.mybatis.spring.boot
          
     
      mybatis-spring-boot-starter
           
       
        1.3.0
        
      
     
    

引入数据库连接依赖：

                
     
      mysql
                 
     
      mysql-connector-java
                 
     
      runtime
             
            
                
     
      com.alibaba
                 
     
      druid
                 
     
      1.0.29
             
    

引入数据源

application.properties配置文件中引入数据源：

spring.datasource.url=jdbc:mysql://localhost:3306/testspring.datasource.username=rootspring.datasource.password=123456spring.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 EXISTSCREATE 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

@Mapperpublic 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
    
      findAccountList();}
    

service层

@Servicepublic 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
    
      findAccountList() {        return accountMapper.findAccountList();    }}
    

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