还是再来了解一些springboot
spring boot自述 spring boot
是用来简化spring应用的搭建到开发过程，应用开箱即用，只要通过“just-jar"或tomcat或maven插件run或shell脚本，就可以启动项目。二者，spring boot只要很少的spring配置文件，因为”习惯优于配置"原则，是的spring boot 在开发应用和微服务架构实践中得到广泛应用。
数据库准备
CREATE DATABASE springbootdb;
创建表
DROP TABLE IF EXISTS `city`;
CREATE TABLE `city` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '城市编号',
`province_id` int(10) unsigned NOT NULL COMMENT '省份编号',
`city_name` varchar(25) DEFAULT NULL COMMENT '城市名称',
`description` varchar(25) DEFAULT NULL COMMENT '描述',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
项目结构介绍
org.spring.springboot.controller - Controller 层
org.spring.springboot.dao - 数据操作层 DAO
org.spring.springboot.domain - 实体类
org.spring.springboot.service - 业务逻辑层
Application - 应用启动类
application.properties - 应用配置文件，应用启动会自动读取配置（数据库配置文件）
具体实现代码
controller
@Controller
public class CityController {
@Autowired
private CityService cityService;
@RequestMapping(value = "/api/city/{id}", method = RequestMethod.GET)
public String findOneCity(Model model, @PathVariable("id") Long id) {
model.addAttribute("city", cityService.findCityById(id));
return "city";
}
@RequestMapping(value = "/api/city", method = RequestMethod.GET)
public String findAllCity(Model model) {
List<City> cityList = cityService.findAllCity();
model.addAttribute("cityList",cityList);
return "cityList";
}
}
dao层
@Repository
public interface CityDao {
/**
* 获取城市信息列表
*
* @return
*/
List<City> findAllCity();
/**
* 根据城市 ID，获取城市信息
*
* @param id
* @return
*/
City findById(@Param("id") Long id);
Long saveCity(City city);
Long updateCity(City city);
Long deleteCity(Long id);
}
实体类
public class City {
/**
* 城市编号
*/
private Long id;
/**
* 省份编号
*/
private Long provinceId;
/**
* 城市名称
*/
private String cityName;
/**
* 描述
*/
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;
}
}
service业务逻辑层
业务接口
public interface CityService {
/**
* 获取城市信息列表
*
* @return
*/
List<City> findAllCity();
/**
* 根据城市 ID,查询城市信息
*
* @param id
* @return
*/
City findCityById(Long id);
/**
* 新增城市信息
*
* @param city
* @return
*/
Long saveCity(City city);
/**
* 更新城市信息
*
* @param city
* @return
*/
Long updateCity(City city);
/**
* 根据城市 ID,删除城市信息
*
* @param id
* @return
*/
Long deleteCity(Long id);
}
业务实现
@Service
public class CityServiceImpl implements CityService {
@Autowired
private CityDao cityDao;
@Override
public List<City> findAllCity(){
return cityDao.findAllCity();
}
@Override
public City findCityById(Long id) {
return cityDao.findById(id);
}
@Override
public Long saveCity(City city) {
return cityDao.saveCity(city);
}
@Override
public Long updateCity(City city) {
return cityDao.updateCity(city);
}
@Override
public Long deleteCity(Long id) {
return cityDao.deleteCity(id);
}
}
pom文件
<!-- 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 Freemarker 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<!-- 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 -->
<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>
application.properties
## 数据源配置
spring.datasource.url=jdbc:mysql://localhost:3306/springbootdb?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.properties.hibernate.hbm2ddl.auto=create-drop
## Mybatis 配置
mybatis.typeAliasesPackage=org.spring.springboot.domain
mybatis.mapperLocations=classpath:mapper/*.xml
#
### Freemarker 配置
### 文件配置路径
spring.freemarker.template-loader-path=classpath:/web/
spring.freemarker.cache=false
spring.freemarker.charset=UTF-8
spring.freemarker.check-template-location=true
spring.freemarker.content-type=text/html
spring.freemarker.expose-request-attributes=true
spring.freemarker.expose-session-attributes=true
spring.freemarker.request-context-attribute=request
spring.freemarker.suffix=.ftl
页面效果
具体的页面可以结合前端框架