1、pom文件
导入myatis依赖
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
数据库依赖
<!--数据库-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.9</version>
</dependency>
数据源依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.9</version>
</dependency>
2、application.properties
## 端口
server.port=8888
##项目名
server.servlet.context-path=/
##数据库连接
spring.datasource.url=jdbc:mysql://localhost:3306/kc?useUnicode=true&characterEncoding=utf8
spring.datasource.name=root
spring.datasource.password=12345678
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
##打印到控制台
mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl
##mybatis配置
mybatis.type-aliases-package=com.kc
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
mybatis.typeAliasesPackage=com.kc.*.*.entity
#使用驼峰命名法转换字段。
mybatis.configuration.map-underscore-to-camel-case=true
#使全局的映射器启用或禁用缓存。
mybatis.configuration.cache-enabled=true
#全局启用或禁用延迟加载。当禁用时,所有关联对象都会即时加载。
mybatis.configuration.lazy-loading-enabled=true
#当启用时,有延迟加载属性的对象在被调用时将会完全加载任意属性。否则,每种属性将会按需要加载。
mybatis.configuration.aggressive-lazy-loading=true
#是否允许单条sql 返回多个数据集 (取决于驱动的兼容性) default:true
mybatis.configuration.multiple-result-sets-enabled=true
#是否可以使用列的别名 (取决于驱动的兼容性) default:true
mybatis.configuration.use-column-label=true
#允许JDBC 生成主键。需要驱动器支持。如果设为了true,这个设置将强制使用被生成的主键,有一些驱动器不兼容不过仍然可以执行。 default:false
mybatis.configuration.use-generated-keys=true
#指定 MyBatis 如何自动映射 数据基表的列 NONE:不隐射\u3000PARTIAL:部分 FULL:全部
mybatis.configuration.auto-mapping-behavior=partial
#这是默认的执行类型 (SIMPLE: 简单; REUSE: 执行器可能重复使用prepared statements语句;BATCH: 执行器可以重复执行语句和批量更新)
mybatis.configuration.default-executor-type=simple
#设置本地缓存范围 session:就会有数据的共享 statement:语句范围 (这样就不会有数据的共享 ) defalut:session
mybatis.configuration.local-cache-scope=session
#设置但JDBC类型为空时,某些驱动程序 要指定值,default:OTHER,插入空值时不需要指定类型
mybatis.configuration.jdbc-type-for-null=null
#如果数据为空的字段,则该字段省略不显示,可以通过添加配置文件,规定查询数据为空是则返回null。
mybatis.configuration.call-setters-on-nulls=true
## 连接池配置
spring.datasource.druid.initial-size=5
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=20
spring.datasource.druid.max-wait=30000
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.min-evictable-idle-time-millis=300000
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=true
spring.datasource.druid.test-on-return=false
spring.datasource.druid.validation-query=SELECT 'x'
##spring.datasource.druid.pool-prepared-statements=false
##spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
spring.datasource.druid.remove-abandoned=true
spring.datasource.druid.remove-abandoned-timeout=1800
spring.datasource.druid.filters=stat,wall
spring.datasource.druid.stat-view-servlet.url-pattern=/druid/*
spring.datasource.druid.stat-view-servlet.reset-enable=true
spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=admin
spring.datasource.druid.aop-patterns=com.kc.*.service.*
3、配置完以后做个测试
实体类:
public class UserEntity {
private String id;
private String name;
private String sex;
private Integer age;
private String phone;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
Mapper
@Mapper
public interface UserMapper {
List<UserEntity> selectList();
}
Mapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kc.admin.mapper.UserMapper">
<select id="selectList" resultType="com.kc.admin.entity.UserEntity">
SELECT * from user
</select>
</mapper>
service
public interface UserService {
List<UserEntity> list();
}
serviceImpl
@Service
public class UserServiceImp implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<UserEntity> list() {
return userMapper.selectList();
}
}
controller
@RestController
public class UserController {
@Autowired
UserService userService;
@RequestMapping("/w")
public List<UserEntity> Hello(){
List<UserEntity> list = userService.list();
return list;
}
}
访问结果