SpringBoot如何整合MyBatis?

1、新建项目maven项目：microcloud-provider-dept-8001

2、在maven文件中新增springboot与mybatis整合相关依赖包<project xmlns="http://罪焐芡拂maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.gwolf</groupId> <artifactId>microcloud-provider-dept-8001</artifactId> <packaging>jar </packaging> <name>springboot-mybatis</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties><dependencies> <dependency> <!-- Import dependency management from Spring Boot --> <!--SpringCloud离不开SpringBoot，所以必须配置SpringBoot依赖包--> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>1.5.2.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>6.0.6</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.5</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>1.2.3</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jetty</artifactId> <version>1.5.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <version>1.5.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <version>1.5.8.RELEASE</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>springloaded</artifactId> <version>1.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <version>1.5.8.RELEASE</version> </dependency> </dependencies></project>

3、创建数据库脚本：DROP DATABASE IF EXISTS mldn_1 ;CREATE DATABASE mldn_1 CHARACTER SET UTF8 ;USE mldn_1 ;CREATE TABLE dept ( deptno BIGINT AUTO_INCREMENT , dname VARCHAR(50) , loc VARCHAR(50) , CONSTRAINT pk_deptno PRIMARY KEY(deptno)) ;INSERT INTO dept(dname,loc) VALUES ('开发部',database()) ;INSERT INTO dept(dname,loc) VALUES ('财务部',database()) ;INSERT INTO dept(dname,loc) VALUES ('市场部',database()) ;INSERT INTO dept(dname,loc) VALUES ('后勤部',database()) ;INSERT INTO dept(dname,loc) VALUES ('公关部',database()) ;

4、创建application.yml配置文件server: port: 8001mybat坡纠课柩is: config-loc锾攒揉敫ation: classpath:mybatis/mybatis.cfg.xml # mybatis配置文件所在路径 type-aliases-package: com.gwolf.vo # 定义所有操作类的别名所在包 mapper-locations: # 所有的mapper映射文件 - classpath:mybatis/mapper/**/*.xmlspring: datasource: type: com.alibaba.druid.pool.DruidDataSource # 配置当前要使用的数据源的操作类型 driver-class-name: com.mysql.cj.jdbc.Driver # 配置MySQL的驱动程序类 url: jdbc:mysql://localhost:3306/mldn_1?serverTimezone=UTC # 数据库连接地址 username: root # 数据库用户名 password: root # 数据库连接密码 dbcp2: # 进行数据库连接池的配置 min-idle: 5 # 数据库连接池的最小维持连接数 initial-size: 5 # 初始化提供的连接数 max-total: 5 # 最大的连接数 max-wait-millis: 200 # 等待连接获取的最大超时时间 application: name: microcloud-provider-deptsecurity: user: name: gwolf #用户名 password: gwolf #密码 role: #授权角色 - USER

5、创建VO对象：package com.gwolf.vo;public class Dept implements java.io.Serializable { private Long deptno; private String dname; private String loc; public Long getDeptno() { return deptno; } public void setDeptno(Long deptno) { this.deptno = deptno; } @Override public String toString() { return "Dept{" + "deptno=" + deptno + ", dname='" + dname + '\'' + ", loc='" + loc + '\'' + '}'; } public String getDname() { return dname; } public void setDname(String dname) { this.dname = dname; } public String getLoc() { return loc; } public void setLoc(String loc) { this.loc = loc; }}

6、创建mybatis配置文件：<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration> <!-- 进行Mybatis的相应的环境的属性定义 --> <settings> <!-- 在本项目之中开启二级缓存 --> <setting name="cacheEnabled" value="true"/> </settings></configuration>

7、创建dept.xml文件<?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.gwolf.microcloud.dao.IDeptDAO"> <select id="findById" resultType="Dept" parameterType="long"> SELECT deptno,dname,loc FROM dept WHERE deptno=#{deptno} ; </select> <select id="findAll" resultType="Dept"> SELECT deptno,dname,loc FROM dept ; </select> <insert id="doCreate" parameterType="Dept"> INSERT INTO dept(dname,loc) VALUES (#{dname},database()) ; </insert></mapper>

8、创建service类DeptServiceImplpackage com.gwolf.microcloud.service.impl;import com.gwolf.microcloud.dao.IDeptDAO;import com.gwolf.microcloud.service.IDeptService;import com.gwolf.vo.Dept;import org.springframework.stereotype.Service;import javax.annotation.Resource;import java.util.List;@Servicepublic class DeptServiceImpl implements IDeptService{ @Resource private IDeptDAO deptDAO; @Override public Dept get(long id) { return this.deptDAO.findById(id); } @Override public boolean add(Dept dept) { return this.deptDAO.doCreate(dept); } @Override public List<Dept> list() { return this.deptDAO.findAll(); }}

9、创建DAO类：package com.gwolf.microcloud.dao;import com.gwolf.vo.Dept;import org.apache.ibatis.annotations.Mapper;import java.util.List;@Mapperpublic interface IDeptDAO { public boolean doCreate(Dept vo); public Dept findById(Long id); public List<Dept> findAll();}

10、创建项目启动类，注意项目启动类必须在所有类的父目录上面package com.gwolf.microcloud;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class Dept_8001_StartSpringCloudApplication { public static void main(String[] args) { SpringApplication.run(Dept_8001_StartSpringCloudApplication.class,args); }}

11、编写项目测试类：package com.gwolf.microcloud.service;import com.gwolf.micro艘早祓胂cloud.Dept_8001_StartSpringCloudApplication;import com.gwolf.vo.Dept;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import org.springframework.test.context.web.WebAppConfiguration;import javax.annotation.Resource;@SpringBootTest(classes = Dept_8001_StartSpringCloudApplication.class)@RunWith(SpringJUnit4ClassRunner.class)@WebAppConfigurationpublic class IDeptServiceTest { @Resource private IDeptService deptService; @Test public void testGet() { System.out.println(this.deptService.get(1)); } @Test public void testAdd() { Dept dept = new Dept(); dept.setDname("测试部-" + System.currentTimeMillis()); System.out.println(this.deptService.add(dept)); } @Test public void testList() { System.out.println(this.deptService.list()); }}

12、整合完毕，碌巫谫浪执行测试类的list方法，查看结果：[Dept{deptno=1, dname='测试部1505889216746', loc='mldn_1媪青怍牙'}, Dept{deptno=2, dname='测试部1505894821612', loc='mldn_1'}, Dept{deptno=3, dname='测试部1505894836783', loc='mldn_1'}, Dept{deptno=4, dname='web测试', loc='mldn_1'}, Dept{deptno=5, dname='web测试', loc='mldn_1'}, Dept{deptno=6, dname='web测试', loc='mldn_1'}, Dept{deptno=7, dname='测试部1505983431789', loc='mldn_1'}, Dept{deptno=8, dname='测试部1505985088490', loc='mldn_1'}, Dept{deptno=9, dname='测试部1505992277824', loc='mldn_1'}, Dept{deptno=10, dname='测试部1506004929819', loc='mldn_1'}, Dept{deptno=11, dname='测试部1506051647955', loc='mldn_1'}, Dept{deptno=12, dname='测试部-1510581883778', loc='mldn_1'}, Dept{deptno=13, dname='web测试', loc='mldn_1'}, Dept{deptno=14, dname='web测试365', loc='mldn_1'}]，成功打印，整合成功。