说明

  • 从阿里云 GeoJson 资源地址获取指定省、市、区县的行政区划数据并解析

参考

参考 「fast-module-basic-mock-core」模块中 org.jeecg.modules.mock.service.DepartDataService

代码示例

引入依赖

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 <!--解析geojson-->
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.13.0</version>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-core</artifactId>
  <version>2.13.0</version>
</dependency>

java 部分代码

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// 全国各省区划数据接口
    public static final String CHINA_DEPART_AREA_1_URL = "https://geo.datav.aliyun.com/areas_v3/bound/100000_full.json";
    public static final String CHINA_DEPART_AREA_2_URL = "https://geo.datav.aliyun.com/areas_v3/bound/SHENG_CODE0000_full.json";
    public static final String CHINA_DEPART_AREA_3_URL = "https://geo.datav.aliyun.com/areas_v3/bound/SHI_CODE00_full.json";

    /**
     * 根据省级根机构编码初始化机构区划数据
     *
     * @return
     */
    @Transactional(rollbackFor = Exception.class)
    public Result<?> initSysDepartAreaData(String orgCode) {
        Integer deptLevel = MockConstant.getDeptLevel(orgCode);
        if(!deptLevel.equals(MockConstant.DEPT_LEVEL_1)) {
            Result.error("请输入省级机构编码");
        }

        // 获取省区划数据
        initData(orgCode, MockConstant.DEPT_LEVEL_1);

        // 各市区划数据
        initData(orgCode, MockConstant.DEPT_LEVEL_2);

        List<SysDepartArea> sysDepartChinasShi = sysDepartAreaService.list(new LambdaQueryWrapper<SysDepartArea>()
                .likeRight(SysDepartArea::getSysCode, orgCode)
                .ne(SysDepartArea::getSysCode, orgCode)
                .select(SysDepartArea::getSysCode));
        for (SysDepartArea departShi : sysDepartChinasShi) {
            // 各区县区划数据
            initData(departShi.getSysCode(), MockConstant.DEPT_LEVEL_3);
        }

        return Result.OK(String.format("行政区划数据初始化完成，共计 %s 条", sysDepartAreaService.count()));
    }

    public void initData(String orgCode, Integer deptLevel) {
        // 创建ObjectMapper对象
        ObjectMapper objectMapper = new ObjectMapper();
        JsonNode rootNode = null;
        try {
            if(MockConstant.DEPT_LEVEL_1.equals(deptLevel)) {
                // 获取省级数据
                rootNode = objectMapper.readTree(new URL(CHINA_DEPART_AREA_1_URL));
            } else if(MockConstant.DEPT_LEVEL_2.equals(deptLevel)) {
                // 获取市级数据
                rootNode = objectMapper.readTree(new URL(CHINA_DEPART_AREA_2_URL.replace("SHENG_CODE", orgCode)));
            } else if(MockConstant.DEPT_LEVEL_3.equals(deptLevel)) {
                // 获取区县级数据
                rootNode = objectMapper.readTree(new URL(CHINA_DEPART_AREA_3_URL.replace("SHI_CODE", orgCode)));
            }

            JsonNode features = rootNode.get("features");
            for (JsonNode feature : features) {
                JsonNode properties = feature.get("properties");
                String name = String.valueOf(properties.get("name"));
                name = name.substring(1, name.length() - 1);
                if(StrUtil.isBlank(name)) {
                    continue;
                }

                JsonNode adcode = properties.get("adcode");
                String level = String.valueOf(properties.get("level"));
                level = level.substring(1, level.length() - 1);

                String sysCode = null;
                if("province".equals(level)){
                    // 省级
                    deptLevel = MockConstant.DEPT_LEVEL_1;
                } else if("city".equals(level)){
                    // 市级
                    deptLevel = MockConstant.DEPT_LEVEL_2;
                } else if("district".equals(level)){
                    // 区县
                    deptLevel = MockConstant.DEPT_LEVEL_3;
                }
                sysCode = MockConstant.getCode(Long.valueOf(String.valueOf(adcode)).longValue(), deptLevel);

                JsonNode center = properties.get("center");
                String centerPoint = center.get(1) + "," + center.get(0);

                JsonNode geometry = feature.get("geometry");
                JsonNode coordinates = geometry.get("coordinates");
                System.out.println(name + "有【" + coordinates.size() + "】个区域");

                boolean izMatch = false; // 是否匹配到某省
                boolean izSave = true; // 是否需要保存
                if(MockConstant.DEPT_LEVEL_1.equals(deptLevel)) {
                    if(orgCode.equals(sysCode)) {
                        izMatch = true;
                        izSave = true;
                    } else {
                        izSave = false;
                    }
                }

                if(izSave) {
                    int count = 1;
                    for (JsonNode coordinate : coordinates) {
                        // System.out.println(name + "的第【" + count++ + "】个区域");
                        List<String> pointList = new ArrayList<>();
                        if(coordinate.size() == 1) {
                            JsonNode points = coordinate.get(0);
                            for (JsonNode point : points) {
                                pointList.add(point.get(1) + "," + point.get(0));
                            }
                        } else {
                            for (JsonNode point : coordinate) {
                                pointList.add(point.get(1) + "," + point.get(0));
                            }
                        }

                        SysDepartArea sysDepartArea = new SysDepartArea();
                        sysDepartArea.setSysCode(sysCode);
                        sysDepartArea.setName(name);
                        sysDepartArea.setOrderNum(count++);
                        String point = centerPoint + ";" + pointList.stream().collect(Collectors.joining("#"));
                        sysDepartArea.setPoint(point);
                        sysDepartAreaService.saveWithGeoPolygon(sysDepartArea, point);
                    }
                }

                if(izMatch) {
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }