postgis+springboot三级联动
时间: 2023-09-05 12:14:44 浏览: 165
在Spring Boot中使用PostGIS实现省市县三级联动可以按照以下步骤进行:
1. 配置PostGIS数据库:首先,确保已经安装了PostgreSQL和PostGIS插件。创建一个新的数据库,并在其上启用PostGIS插件。可以使用以下命令:
```
CREATE DATABASE your_database_name;
\c your_database_name
CREATE EXTENSION postgis;
```
2. 导入省市县数据:下载省市县数据的shapefile文件,并使用工具(如shp2pgsql)将其导入到PostGIS数据库中。命令示例:
```
shp2pgsql -s 4326 -I -W "UTF-8" path/to/shapefile tablename | psql -d your_database_name -U your_username
```
3. 创建实体类和Repository:在Spring Boot项目中创建相应的实体类来映射省市县数据表,并创建对应的Repository接口来操作数据库。
```java
@Entity
@Table(name = "your_table_name")
public class County {
@Id
private Long id;
private String name;
private Long parentId;
// 其他属性
// Getters and setters
}
public interface CountyRepository extends JpaRepository<County, Long> {
List<County> findByParentId(Long parentId);
}
```
4. 创建服务类:创建一个服务类来处理省市县数据的业务逻辑。
```java
@Service
public class CountyService {
private final CountyRepository countyRepository;
public CountyService(CountyRepository countyRepository) {
this.countyRepository = countyRepository;
}
public List<County> getCountiesByParentId(Long parentId) {
return countyRepository.findByParentId(parentId);
}
}
```
5. 创建控制器:创建一个控制器类来处理前端请求,并调用服务类获取省市县数据。
```java
@RestController
@RequestMapping("/counties")
public class CountyController {
private final CountyService countyService;
public CountyController(CountyService countyService) {
this.countyService = countyService;
}
@GetMapping("/{parentId}")
public List<County> getCountiesByParentId(@PathVariable Long parentId) {
return countyService.getCountiesByParentId(parentId);
}
}
```
6. 配置跨域访问:如果前端应用与后端应用部署在不同的域名下,需要在后端应用中配置跨域访问。
```java
@Configuration
public class CorsConfig implements WebMvcConfigurer {
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedMethods("*");
}
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