springboot使用mybatis

添加依赖

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
         </dependency>

配置durid数据库

spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:13306/jpa?useUnicode=true&characterEncoding=utf8&autoReconnect=true&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456
# 下面为连接池的补充设置，应用到上面所有数据源中
# 初始化大小，最小，最大
spring.datasource.initialSize=20
spring.datasource.minIdle=5
spring.datasource.maxActive=20
# 配置获取连接等待超时的时间
spring.datasource.maxWait=60000
# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
spring.datasource.timeBetweenEvictionRunsMillis=60000
# 配置一个连接在池中最小生存的时间，单位是毫秒
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
# 打开PSCache，并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
spring.datasource.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能；慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
#spring.datasource.useGlobalDataSourceStat=true

# WebStatFilter配置，说明请参考Druid Wiki，配置_配置WebStatFilter
spring.datasource.druid.web-stat-filter.enabled= true
  #是否启用StatFilter默认值true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions=*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*
spring.datasource.druid.web-stat-filter.session-stat-enable=
spring.datasource.druid.web-stat-filter.session-stat-max-count=
spring.datasource.druid.web-stat-filter.principal-session-name=
spring.datasource.druid.web-stat-filter.principal-cookie-name=
spring.datasource.druid.web-stat-filter.profile-enable=

# StatViewServlet配置，说明请参考Druid Wiki，配置_StatViewServlet配置
spring.datasource.druid.stat-view-servlet.enabled= true
  #是否启用StatViewServlet默认值true
spring.datasource.druid.stat-view-servlet.url-pattern=/druid/*
spring.datasource.druid.stat-view-servlet.reset-enable=false
spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=admin
spring.datasource.druid.stat-view-servlet.allow=127.0.0.1
spring.datasource.druid.stat-view-servlet.deny=192.168.1.73

实体

package com.landleaf.www.entity;

public class User {
    public User() {
    }

    private Long id;
    private String name;
    private Integer age;

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public User(Integer age, Long id, String name) {
        this.age = age;
        this.id = id;
        this.name = name;
    }

    @Override
    public String toString() {
        return "User{" +
                "age=" + age +
                ", id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

访问接口

@Mapper
public interface UserMapper {

    @Select("SELECT * FROM USER WHERE NAME = #{name}")
    User findByName(@Param("name") String name);

    @Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
    int insert(@Param("name") String name, @Param("age") Integer age);


    @Update("UPDATE USER SET age=#{age} WHERE name=#{name}")
    void update(User user);

    @Delete("DELETE USER  WHERE id=#{id}")
    void delete(Long id);

    //使用Map对象
    @Insert("INSERT USER(NAME, AGE) VALUES(#{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER})")
    int insertByMap(Map<String, Object> map);

    //使用对象
    @Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
    int insertByUser(User user);

}

测试

@RunWith(SpringRunner.class)
@SpringBootTest
@Transactional
public class UserMapperTest {

    Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    UserMapper userMapper;


    @Test
//    @Rollback
    public void insert() throws Exception{
        userMapper.insert("maomaotou",18);

        logger.info(String.valueOf(userMapper.findByName("maomaotou").getAge()));
        Assert.assertEquals(18,userMapper.findByName("maomaotou").getAge().longValue());

    }

    @Test
    @Rollback
    public void findByName() throws Exception {
        userMapper.insert("AAA", 20);
        User u = userMapper.findByName("AAA");
        Assert.assertEquals(20, u.getAge().intValue());

    }

    @Test
    @Rollback
    public void insertByMap() throws Exception {
        Map map = new HashMap<String,Object>();
        map.put("name","BBB");
        map.put("age",88);
        userMapper.insertByMap(map);

        User u = userMapper.findByName("BBB");
        Assert.assertEquals(88, u.getAge().intValue());

    }

    @Test
    @Rollback
    public void  insertByUser() throws Exception{

        User entity = new User();
        entity.setAge(66);
        entity.setName("ddd");
        userMapper.insertByUser(entity);
        User u = userMapper.findByName("ddd");
        Assert.assertEquals(66, u.getAge().intValue());


    }

}