- 1. SpringBoot整合连接池
- 1.1 在pom.xml中引人jdbc连接池依赖
- 1.2 在application.properties配置数据库连接信息
- 2 SpringBoot整合mybatis
- 2.1 概述
- 2.2 在pom.xml引入mybatis依赖
- 2.3 表结构与数据
- 2.4 实体类
- 2.5 业务接口与实现类
- 2.6 控制器类
- 2.7 XML方式
- 2.7.1 Mapper接口
- 2.7.2 xml映射文件
- 2.7.3 application.properties配置
- 2.7.4 SpringBoot启动类添加扫描接口的注解
- 2.8 注解方式
- 3. SpringBoot集成tkMybatis
- 3.1 在pom.xml引入依赖
- 3.2 Mapper接口继承通用的Mapper接口
- 3.3 SpringBoot启动类修改成tk包的@MapperScan
- 3.4 tk的Mapper的方法
1. SpringBoot整合连接池
1.1 在pom.xml中引人jdbc连接池依赖
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
1.2 在application.properties配置数据库连接信息
# 数据源连接信息
spring.datasource.url=jdbc:mysql://localhost:3306/springboot?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driverClassName=com.mysql.jdbc.Driver
# hikari连接池
spring.datasource.hikari.idle-timeout=60000
spring.datasource.hikari.maximum-pool-size=30
spring.datasource.hikari.minimum-idle=10
2 SpringBoot整合mybatis
2.1 概述
- SpringBoot没有提供整合mybatis的包,但mybatis官方提供了向SpringBoot整合的包,参考官网链接:http://mybatis.org/spring-boot-starter/mybatis-spring-boot-autoconfigure/
2.2 在pom.xml引入mybatis依赖
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>1.3.2version>
dependency>
2.3 表结构与数据
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(50) DEFAULT NULL,
`age` int(11) DEFAULT NULL,
`birthday` date DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
INSERT INTO `user` VALUES ('1', '张三', '13', '2013-03-03');
INSERT INTO `user` VALUES ('2', '李四', '14', '2014-04-04');
INSERT INTO `user` VALUES ('3', '王五', '15', '2015-05-05');
2.4 实体类
package com.domain;
import java.util.Date;
public class User {
private Integer id;
private String username;
private Integer age;
private Date birthday;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public Date getBirthday() {return birthday;}
public void setBirthday(Date birthday) {this.birthday = birthday; }
@Override
public String toString() {
return "User{" + "id=" + id + ", username='" + username + '\'' + ", age=" + age + ", birthday=" + birthday + '}';
}
}
2.5 业务接口与实现类
package com.service;
import com.domain.User;
import java.util.List;
public interface IUserService {
List<User> findAll();
}
package com.service.impl;
import com.service.IUserService;
import com.domain.User;
import com.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements IUserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> findAll() {
return userMapper.findAll();
}
}
2.6 控制器类
package com.controller;
import com.domain.User;
import com.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("user")
public class UserController {
@Autowired
private IUserService userService;
@RequestMapping("findAll")
public List<User> findAll(){
System.out.println("findAll");
List<User> userList=userService.findAll();
System.out.println(userList);
return userList;
}
}
2.7 XML方式
2.7.1 Mapper接口
package com.mapper;
import com.domain.User;
import java.util.List;
public interface UserMapper {
List<User> findAll();
}
2.7.2 xml映射文件
<mapper namespace="com.mapper.UserMapper">
<select id="findAll" resultType="com.domain.User">
select * from user;
select>
mapper>
2.7.3 application.properties配置
# mybatis 实体类型别名扫描,配合映射文件XXXMapper.xml使用
# 如果用注解方式,该设置可以省略
mybatis.type-aliases-package=com.domain
# mapper.xml映射文件位置,如果接口与xml在同一个包中(包括java中的包与resource中的包同包),该设置可以省略
# 如果用注解方式,该设置可以省略
mybatis.mapper-locations=classpath:com/mapper/*.xml
2.7.4 SpringBoot启动类添加扫描接口的注解
@SpringBootApplication
@MapperScan("com.mapper")
public class SpringBootStarter {
public static void main(String[] args) {
SpringApplication.run(SpringBootStarter.class);
}
}
2.8 注解方式
- 2.7.2与2.7.3步骤直接省略掉,不用做
- 2.7.4代码不变,依然要添加@MapperScan注解
- Mapper接口中@Mapper注解只对当前接口有效
- SpringBoot启动类的@MapperScan对指定包下所有接口都有效
package com.mapper;
import com.domain.User;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface UserMapper {
@Select("select * from user")
List<User> findAll();
}
@SpringBootApplication
@MapperScan("com.mapper")
public class SpringBootStarter {
public static void main(String[] args) {
SpringApplication.run(SpringBootStarter.class);
}
}
3. SpringBoot集成tkMybatis
3.1 在pom.xml引入依赖
<dependency>
<groupId>tk.mybatisgroupId>
<artifactId>mapper-spring-boot-starterartifactId>
<version>2.0.2version>
dependency>
3.2 Mapper接口继承通用的Mapper接口
package com.mapper;
import com.domain.User;
import tk.mybatis.mapper.common.Mapper;
public interface UserMapper extends Mapper<User> {
}
3.3 SpringBoot启动类修改成tk包的@MapperScan
package com;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import tk.mybatis.spring.annotation.MapperScan;
@SpringBootApplication
@MapperScan("com.mapper")
public class SpringBootStarter {
public static void main(String[] args) {
SpringApplication.run(SpringBootStarter.class);
}
}
3.4 tk的Mapper的方法
- 这里不详细说明
![SpringBoot整合连接池、mybatis、tkMybatis_第1张图片](http://img.e-com-net.com/image/info8/137265c8931a4a63a2edd3429c770bbb.jpg)