springboot-mybatis整合
注意点：有5个
MybatisApplication
package com.hipad;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.hipad.dao") //注意点1，要包扫描
public class MybatisApplication {
public static void main(String[] args) {
SpringApplication.run(MybatisApplication.class, args);
}
}
CityController
package com.hipad.controller;
import com.hipad.Service.CityService;
import com.hipad.domain.City;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController //注意点2，相当于@ResponseBody和@Controller
public class CityController {
@Autowired
CityService cityService;
@RequestMapping(value = "city/list",method = RequestMethod.GET)
public City findCity(@RequestParam(value = "cityName",required = true) String cityName){
System.out.println("我是findCity------------------------------------------");
return cityService.findCity(cityName);
}
}
CityService
package com.hipad.Service;
import com.hipad.domain.City;
date:2018/5/13
*/
public interface CityService {
City findCity(String cityName);
}
CityServiceImpl
package com.hipad.Service.impl;
import com.hipad.Service.CityService;
import com.hipad.dao.CityDao;
import com.hipad.domain.City;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class CityServiceImpl implements CityService {
@Autowired
CityDao cityDao;
@Override
public City findCity(String cityName) {
return cityDao.findCity(cityName);
}
}
CityDao
package com.hipad.dao;
import com.hipad.domain.City;
public interface CityDao {
City findCity(String cityName);
}
domain层的City
package com.hipad.domain;
public class City {
private Long id;
private Long provinceId;
private String cityName;
private String description;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getProvinceId() {
return provinceId;
}
public void setProvinceId(Long provinceId) {
this.provinceId = provinceId;
}
public String getCityName() {
return cityName;
}
public void setCityName(String cityName) {
this.cityName = cityName;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
@Override
public String toString() {
return "City{" +
"id=" + id +
", provinceId=" + provinceId +
", cityName='" + cityName + '\'' +
", description='" + description + '\'' +
'}';
}
}
resources中的application.properties
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/springbootdb?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123
##mybatis配置，首先包扫描，后加载配置文件
mybatis.typeAliasesPackage=com.hipad.domain //注意点3，包扫描domain实体类
mybatis.mapperLocations=classpath:mapper/*.xml
resources中的CityMapper.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.hipad.dao.CityDao">
<resultMap id="BaseMap" type="com.hipad.domain.City">
<result column="id" property="id"/>
<result column="province_id" property="provinceId"/>
<result column="city_name" property="cityName"/>
<result column="description" property="description"/>
</resultMap>
<select id="findCity" resultMap="BaseMap" parameterType="String">
SELECT * FROM city WHERE city_name=#{cityName}
</select> // 注意点4，city_name不是实体类属性
</mapper>
POM
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://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>springboot</groupId>
<artifactId>springboot-mybatis</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-mybatis :: 整合 Mybatis Demo</name>
<!-- Spring Boot 启动父依赖 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.RELEASE</version>
</parent>
<properties>
<mybatis-spring-boot>1.2.0</mybatis-spring-boot>
<mysql-connector>5.1.39</mysql-connector>
</properties>
<dependencies>
<!-- Spring Boot Web 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Spring Boot Test 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Spring Boot Mybatis 依赖 -->
<!-- 注意点5，依赖，不在spring依赖包，在mybatis仓库-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis-spring-boot}</version>
</dependency>
<!-- MySQL 连接驱动依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector}</version>
</dependency>
<!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
</project>