本文以简单示例展示spring boot与mybatis的整合过程：
(一)示例的目录结构
1、pom.xml
4.0.0 com.oschina spring-mybatis 0.0.1-SNAPSHOT org.springframework.boot spring-boot-starter-parent 1.5.10.RELEASE org.springframework.boot spring-boot-starter-web mysql mysql-connector-java org.mybatis.spring.boot mybatis-spring-boot-starter 1.3.1 com.alibaba druid 1.0.29 org.springframework.boot spring-boot-maven-plugin
2、application.properties
server.port=8089 server.context-path=/person spring.datasource.url=jdbc\:mysql\://127.0.0.1\:3306/test spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.type=com.alibaba.druid.pool.DruidDataSource # \u521D\u59CB\u5316\u5927\u5C0F\uFF0C\u6700\u5C0F\uFF0C\u6700\u5927 spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=20 # \u914D\u7F6E\u83B7\u53D6\u8FDE\u63A5\u7B49\u5F85\u8D85\u65F6\u7684\u65F6\u95F4 spring.datasource.maxWait=60000 mybatis.mapper-locations=classpath*:mapper/*.xml mybatis.type-aliases-package=com.oschina.entity
3、启动类
package com.oschina;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
4、controller层
package com.oschina.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.oschina.entity.Person;
import com.oschina.server.IPersonService;
@RestController
public class PersonController {
@Autowired
private IPersonService personService;
@GetMapping("/one/{id}")
public Person findOne(@PathVariable("id") Integer id) {
return personService.findPersonById(id);
}
@GetMapping("/many")
public List findAll() {
return personService.findAll();
}
@PostMapping("/insert")
public void insert(@RequestParam("name") String name, @RequestParam("age") Integer age) {
personService.insertPerson(name, age);
}
@PutMapping("/update/{id}")
public void update(@PathVariable("id") Integer id, @RequestParam("name") String name,
@RequestParam("age") Integer age) {
personService.updatePerson(id, name, age);
}
@DeleteMapping("/delete/{id}")
public void delete(@PathVariable("id") Integer id) {
personService.deletePerson(id);
}
}
5、service层
package com.oschina.server;
import java.util.List;
import com.oschina.entity.Person;
public interface IPersonService {
Person findPersonById(Integer id);
List findAll();
void insertPerson(String name, Integer age);
void updatePerson(Integer id, String name, Integer age);
void deletePerson(Integer id);
}
package com.oschina.server;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.oschina.entity.Person;
import com.oschina.mapper.PersonMapper;
@Service
public class PersonService implements IPersonService {
@Autowired
private PersonMapper personMapper;
@Override
public Person findPersonById(Integer id) {
return personMapper.findPersonById(id);
}
@Override
public List findAll() {
return personMapper.findAll();
}
@Override
public void insertPerson(String name, Integer age) {
personMapper.insertPerson(name, age);
}
@Override
public void updatePerson(Integer id, String name, Integer age) {
personMapper.updatePerson(id, name, age);
}
@Override
public void deletePerson(Integer id) {
personMapper.deletePerson(id);
}
}
6、mapper层
package com.oschina.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import com.oschina.entity.Person;
@Mapper
public interface PersonMapper {
Person findPersonById(@Param("id") Integer id);
List findAll();
void insertPerson(@Param("name") String name, @Param("age") Integer age);
void updatePerson(@Param("id") Integer id, @Param("name") String name, @Param("age") Integer age);
void deletePerson(@Param("id") Integer id);
}
7、实体类
package com.oschina.entity;
import java.io.Serializable;
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
private Integer id;
private String name;
private int age;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";
}
}
8、mybatis xml的映射文件
insert into tbl_person(name,age) values(#{name},#{age}) update tbl_person name=#{name}, age=#{age} where id=#{id}delete from tbl_person where id=#{id}
