java递归api（java递归树形结构）

@Data
@Table(name = "api_config")
@AllArgsConstructor
public class ApiConfig implements Serializable {

    @ApiModelProperty("api名称")
    private String apiName;

    @ApiModelProperty("数据源名称")
    private String dsName;

    @ApiModelProperty("SQL")
    private String querySql;

    @ApiModelProperty("结果类型")
    private String resultType;

    @ApiModelProperty("结果描述")
    private String resultDesc;

    @ApiModelProperty("依赖api")
    private String dependApiName;
}

@Slf4j
public class Test {
    //测试数据的初始化
    public static List<ApiConfig> apiConfigList = new ArrayList<>();
    public static Map<String, String> sqlResultMap = ImmutableMap.of("sql1", "{\"a\":\"1\"}", "sql2", "{\"b\":\"2\"}", "sql3", "{\"c\":\"3\"}");

    static {
        ApiConfig api1 = new ApiConfig("p1", "d1", "sql1", "map", "", "{\"b\":\"p1/x1\"}");
        ApiConfig api2 = new ApiConfig("p1/x1", "d1", "sql2", "map", "", "{\"c\":\"p1/x2\"}");
        ApiConfig api3 = new ApiConfig("p1/x2", "d1", "sql3", "map", "", null);
        apiConfigList.add(api1);
        apiConfigList.add(api2);
        apiConfigList.add(api3);
    }

    /**
     * 我要进行http:ip:port/p1这个请求，请返回我相关数据
     * @param args
     */
    public static void main(String[] args) {
        //根据api名称获取结果
        String apiName = "p1";
        JSONObject json = doGetResult(apiName);
        //result必须初始化，而且在方法内部不能重新new，以保证递归方法内更新的是同一个对象，否则拿不到更新数据后的result
        JSONVO result = null;
        if (json != null) {
            result = new JSONVO(json.toJSONString());
        } else {
            result = new JSONVO("{}");
        }
        //如有需要，递归获取子api的结果，并存入result
        getApiResult(apiName, null, result);
        System.out.println(result);

    }

    /**
     * 从子api查询结果，并更新到主result
     * @param apiName
     * @param dataKey
     * @param result
     */
    public static void getApiResult(String apiName, String dataKey, JSONVO result) {
        //dataKey在进入方法时是等于null的，第二次进入肯定不应该为null,这个地方是更新result的关键位置
        if (dataKey != null) {
            JSONObject json = doGetResult(apiName);
            result.set(dataKey, json);
        }
        //进入递归的入口
        String dependApiName = getApiConfig(apiName).getDependApiName();
        if (dependApiName != null) {
            JSONObject dependApi = JSONObject.parseObject(dependApiName);
            Set<String> keySet = dependApi.keySet();
            for (String key : keySet) {
                String subApi = dependApi.getString(key);
                getApiResult(subApi, key, result);
            }

        }
    }

    public static JSONObject doGetResult(String apiName) {
        String querySql = getApiConfig(apiName).getQuerySql();
        return doQuery(querySql);
    }

    /**
     * 根据api名称获取apiConfig
     *
     * @param api
     * @return
     */
    public static ApiConfig getApiConfig(String api) {
        for (ApiConfig apiConfig : apiConfigList) {
            if (apiConfig.getApiName().equals(api)) {
                return apiConfig;
            }
        }
        log.error("api not exists!");
        return null;
    }

    /**
     * 根据查询SQL获取结果
     *
     * @param sql
     * @return
     */
    public static JSONObject doQuery(String sql) {
        String s = sqlResultMap.get(sql);
        JSONObject jsonObject = JSONObject.parseObject(s);
        return jsonObject;
    }


}