DEMO示例

服务场景描述

应用IQCAD图纸解析引擎，通过调用API，可提取图纸中构件，空间、文本表格图纸属性信息。

可以通过接口调用实现以下场景

获取建筑专业平面图中的构件、空间信息
获取图纸中的文本表格信息
对于图纸中的信息解析后，经过数据加工后需要可视化到图纸的dwg和json的相互转化

接口调用流程

服务调用流程

1. 获取Access Token

首先需要获取token。
token有两个，一个是AECORE Access Token，获取方式参考文档获取AccessToken
另一个是CAD识别服务Access Token，获取方式参考文档获取AccessToken

2. 上传文件

第二步需要对需要进行识别的图纸进行上传，目前支持的图纸格式为dwg。
上传时可以直接上传单张dwg图纸，也可以将多张图纸打包成zip上传。
具体上传方法请参照：
上传文件

3. 查询文件上传状态

上传后可以通过调用文件查询接口，查询文件是否已上传完毕。
具体方法参照：
查询文件上传状态

4. 发起识别任务

文件上传完毕后，可以正式发起识别任务。
具体方法参照：
发起识别任务

5. 查询识别任务状态

如果在发起识别任务时，填写了回调函数，则可以在发起识别任务后，等待回调函数通知。
如果没有填写，则需要主动查询任务识别状态。
具体方法参照：
查询识别任务状态

6. 获取识别结果

如果识别任务已经完整，则可以下载识别结果数据。
具体方法参照：
获取识别结果

演示代码

step1：maven依赖

<dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>3.10.0</version>
</dependency>

step2：OkHttpUtil工具类

package com.utils;

import okhttp3.*;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Map;
import java.util.Set;

public class OkHttpUtil {

    private static Logger logger = LoggerFactory
            .getLogger(OkHttpUtil.class);

    private OkHttpClient client = new OkHttpClient();

    private Request.Builder createBuilder(String url,Map<String, String> requestProperty) {
        Request.Builder builder = new Request.Builder()
                .url(url);
        if (requestProperty != null) {
            Set<String> keys = requestProperty.keySet();
            for (String key : keys) {
                builder.addHeader(key, requestProperty.get(key));
            }
        }
        return builder;
    }

    private String loadResponseStr(Request.Builder builder) {
        Request request = builder.build();
        try {
            Response response = client.newCall(request).execute();
            if (response.isSuccessful()) {
                return response.body().string();
            }
        } catch (Exception e) {
            logger.error("LoadResponseStr:", e);
        }
        return null;
    }

    private RequestBody createRequestBody(Map<String, String> params){
        FormBody.Builder formBody = new FormBody.Builder();
        if (params != null) {
            Set<String> keys = params.keySet();
            for (String key : keys) {
                formBody.add(key, params.get(key));
            }
        }
        return formBody.build();
    }

    /**
     * 采用Get方式
     *
     * @param urlStr
     * @param param
     * @param requestProperty 请求头
     * @return
     */
    public String doGet(String urlStr, String param,
                        Map<String, String> requestProperty) {
        String url = StringUtils.isBlank(param) ? urlStr : urlStr + "?"
                + param;
        return loadResponseStr(createBuilder(url,requestProperty));
    }

    /**
     * 采用Post方式，模拟form提交
     *
     * @param urlStr
     * @param params
     * @param requestProperty 请求头
     * @return
     */
    public String doPost(String urlStr, Map<String, String> params,
                         Map<String, String> requestProperty) {
        return loadResponseStr(createBuilder(urlStr,requestProperty).post(createRequestBody(params)));
    }


    /**
     * 采用Post方式，提交json
     *
     * @param urlStr
     * @param jsonBody
     * @param requestProperty 请求头
     * @return
     */
    public String doPostJson(String urlStr, String jsonBody,
                             Map<String, String> requestProperty) {
        //数据类型为json格式
        MediaType JSON = MediaType.parse("application/json; charset=utf-8");
        RequestBody body = RequestBody.create(JSON, jsonBody);
        return loadResponseStr(createBuilder(urlStr,requestProperty).post(body));
    }


    /**
     * 采用Put方式，提交json
     *
     * @param urlStr
     * @param jsonBody
     * @param requestProperty 请求头
     * @return
     */
    public String doPutJson(String urlStr, String jsonBody,
                            Map<String, String> requestProperty) {
       //数据类型为json格式
        if(StringUtils.isNotBlank(jsonBody)) {
            MediaType JSON = MediaType.parse("application/json; charset=utf-8");
            RequestBody body = RequestBody.create(JSON, jsonBody);
            return loadResponseStr(createBuilder(urlStr,requestProperty).put(body));
        } else {
            RequestBody body =RequestBody.create(null, new byte[0]);
            return loadResponseStr(createBuilder(urlStr,requestProperty).put(body));
        }
    }
}

step3：获取token

public void getToken() throws UnsupportedEncodingException {
    OkHttpUtil client = new OkHttpUtil();
    String appKey = "aaa"; //isv申请的appKey
    String appSecret = "aaaa"; //isv申请的appSecret
    String creds = String.format("%s:%s", appKey, appSecret);
    String credential = Base64.encode(creds.getBytes("UTF-8"));
    String urlStr = "http://apigate.hsifue.cn/gcad/oauth2/token";
    Map<String, String> params = new HashMap();
    params.put("grant_type","client_credentials");
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Basic "+credential);
    String res = client.doPost(urlStr,params,requestProperty);
    System.out.println(res);
}

step4：上传图纸

public void upload(){
    OkHttpUtil client = new OkHttpUtil();
    String access_token = "cn-e1br0908-09dd-4039-9040-9fd583";
    String fileName = "xx.dwg";
    String fileUrl = "http://glodon-cad-drawing.oss-cn-beijing.aliyuncs.com/xx.dwg";
    String urlStr = "http://apigate.hsifue.cn/gcad/api/v1/file/upload?name="+URLEncoder.encode(fileName,"UTF-8")+"&url="+ URLEncoder.encode(fileUrl, "UTF-8" );
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Bearer "+access_token);
    String res = client.doPutJson(urlStr, null, requestProperty);
    // 得到fileId
    System.out.println(res);
}

step5：查询上传图纸状态

public void uploadStatus(){
    String access_token = "cn-e1br0908-09dd-4039-9040-9fd583";
    OkHttpUtil client = new OkHttpUtil();
    // fileId是从step4结果获取的
    String urlStr = "http://apigate.hsifue.cn/gcad/api/v1/file/files/"+fileId+"/uploadStatus";
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Bearer "+access_token);
    String res = client.doGet(urlStr, null,requestProperty);
    System.out.println(res);
}

step6：发起识别

public void translate(){
    String access_token = "cn-e1br0908-09dd-4039-9040-9fd583";
    OkHttpUtil client = new OkHttpUtil();
    // fileId是从step4结果获取的
    String urlStr = "http://apigate.hsifue.cn/gcad/api/v1/job?access_token_ex="+access_token;
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Bearer "+access_token);
    String requestBody = "{\"source\":{\"fileId\":xxx,\"compressed\":false, \"rootName\":\"xxx.dwg\"},\"config\":{\"split\":true}}";
    String res = client.doPutJson(urlStr, requestBody, requestProperty);
    //得到databagId
    System.out.println(res);
}

step7：查询识别任务状态

public void translateStatus(){
    String access_token = "cn-e1br0908-09dd-4039-9040-9fd583";
    OkHttpUtil client = new OkHttpUtil();
    // fileId是从step4结果获取的
    String urlStr = "http://apigate.hsifue.cn/gcad/api/v1/job?access_token_ex="+access_token;
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Bearer "+access_token);
    String res = client.doGet(urlStr, null,requestProperty);
    System.out.println(res);
}

step8：查询识别结果

public void extractFeatures(){
    String access_token = "cn-e1br0908-09dd-4039-9040-9fd583";
    OkHttpUtil client = new OkHttpUtil();
    // fileId是从step4结果获取的，databagId是从step6结果获取的
    String urlStr = "http://apigate.hsifue.cn/gcad/api/v1/resource/"+databagId+"/"+fileId;
    Map<String, String> requestProperty = new HashMap();
    requestProperty.put("Authorization","Bearer "+access_token);
    String requestBody = "{\"config\":{\"features\":[\"sheetFrame\",\"floorTable\"]}}";
    String res = client.doPutJson(urlStr, requestBody, requestProperty);
    System.out.println(res);
}

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