查询图片生成结果

1curl -X GET \
2  https://api.mch.weixin.qq.com/brand/marketing/product-coupon/image-generation-tasks/image_generation_task_1?image_generation_type=COMBINE_IMAGE \
3  -H "Authorization: WECHATPAY-BRAND-SHA256-RSA2048 brand_id=\"XXXX\",..." \
4  -H "Accept: application/json" \
5  -H "Wechatpay-Serial: PUB_KEY_ID_XXXX"  
6

1package com.java.demo;
2
3import com.java.utils.WXPayBrandUtility; // 引用微信支付工具库，参考：https://pay.weixin.qq.com/doc/brand/4015826861
4
5import com.google.gson.annotations.SerializedName;
6import com.google.gson.annotations.Expose;
7import okhttp3.MediaType;
8import okhttp3.OkHttpClient;
9import okhttp3.Request;
10import okhttp3.RequestBody;
11import okhttp3.Response;
12
13import java.io.IOException;
14import java.io.UncheckedIOException;
15import java.security.PrivateKey;
16import java.security.PublicKey;
17import java.util.ArrayList;
18import java.util.HashMap;
19import java.util.List;
20import java.util.Map;
21
22/**
23 * 查询图片生成结果
24 */
25public class GetImageGenerationTask {
26  private static String HOST = "https://api.mch.weixin.qq.com";
27  private static String METHOD = "GET";
28  private static String PATH = "/brand/marketing/product-coupon/image-generation-tasks/{task_id}";
29
30  public static void main(String[] args) {
31    // TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/brand/4015415289
32    GetImageGenerationTask client = new GetImageGenerationTask(
33      "xxxxxxxx",                    // 品牌ID，是由微信支付系统生成并分配给每个品牌方的唯一标识符，品牌ID获取方式参考 https://pay.weixin.qq.com/doc/brand/4015415289
34      "1DDE55AD98Exxxxxxxxxx",         // 品牌API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/brand/4015407570
35      "/path/to/apiclient_key.pem",     // 品牌API证书私钥文件路径，本地文件路径
36      "PUB_KEY_ID_xxxxxxxxxxxxx",      // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/brand/4015453439
37      "/path/to/wxp_pub.pem"           // 微信支付公钥文件路径，本地文件路径
38    );
39
40    GetImageGenerationTaskRequest request = new GetImageGenerationTaskRequest();
41    request.taskId = "image_generation_task_1";
42    request.imageGenerationType = ImageGenerationType.COMBINE_IMAGE;
43    try {
44      ImageGenerationTask response = client.run(request);
45        // TODO: 请求成功，继续业务逻辑
46        System.out.println(response);
47    } catch (WXPayBrandUtility.ApiException e) {
48        // TODO: 请求失败，根据状态码执行不同的逻辑
49        e.printStackTrace();
50    }
51  }
52
53  public ImageGenerationTask run(GetImageGenerationTaskRequest request) {
54    String uri = PATH;
55    uri = uri.replace("{task_id}", WXPayBrandUtility.urlEncode(request.taskId));
56    Map<String, Object> args = new HashMap<>();
57    args.put("image_generation_type", request.imageGenerationType);
58    String queryString = WXPayBrandUtility.urlEncode(args);
59    if (!queryString.isEmpty()) {
60        uri = uri + "?" + queryString;
61    }
62
63    Request.Builder reqBuilder = new Request.Builder().url(HOST + uri);
64    reqBuilder.addHeader("Accept", "application/json");
65    reqBuilder.addHeader("Wechatpay-Serial", wechatPayPublicKeyId);
66    reqBuilder.addHeader("Authorization", WXPayBrandUtility.buildAuthorization(brand_id, certificateSerialNo, privateKey, METHOD, uri, null));
67    reqBuilder.method(METHOD, null);
68    Request httpRequest = reqBuilder.build();
69
70    // 发送HTTP请求
71    OkHttpClient client = new OkHttpClient.Builder().build();
72    try (Response httpResponse = client.newCall(httpRequest).execute()) {
73      String respBody = WXPayBrandUtility.extractBody(httpResponse);
74      if (httpResponse.code() >= 200 && httpResponse.code() < 300) {
75        // 2XX 成功，验证应答签名
76        WXPayBrandUtility.validateResponse(this.wechatPayPublicKeyId, this.wechatPayPublicKey,
77            httpResponse.headers(), respBody);
78
79        // 从HTTP应答报文构建返回数据
80        return WXPayBrandUtility.fromJson(respBody, ImageGenerationTask.class);
81      } else {
82        throw new WXPayBrandUtility.ApiException(httpResponse.code(), respBody, httpResponse.headers());
83      }
84    } catch (IOException e) {
85      throw new UncheckedIOException("Sending request to " + uri + " failed.", e);
86    }
87  }
88
89  private final String brand_id;
90  private final String certificateSerialNo;
91  private final PrivateKey privateKey;
92  private final String wechatPayPublicKeyId;
93  private final PublicKey wechatPayPublicKey;
94
95  public GetImageGenerationTask(String brand_id, String certificateSerialNo, String privateKeyFilePath, String wechatPayPublicKeyId, String wechatPayPublicKeyFilePath) {
96    this.brand_id = brand_id;
97    this.certificateSerialNo = certificateSerialNo;
98    this.privateKey = WXPayBrandUtility.loadPrivateKeyFromPath(privateKeyFilePath);
99    this.wechatPayPublicKeyId = wechatPayPublicKeyId;
100    this.wechatPayPublicKey = WXPayBrandUtility.loadPublicKeyFromPath(wechatPayPublicKeyFilePath);
101  }
102
103  public static class GetImageGenerationTaskRequest {
104    @SerializedName("task_id")
105    @Expose(serialize = false)
106    public String taskId;
107  
108    @SerializedName("image_generation_type")
109    @Expose(serialize = false)
110    public ImageGenerationType imageGenerationType;
111  }
112  
113  public static class ImageGenerationTask {
114    @SerializedName("task_id")
115    public String taskId;
116  
117    @SerializedName("image_generation_type")
118    public ImageGenerationType imageGenerationType;
119  
120    @SerializedName("task_state")
121    public TaskState taskState;
122  
123    @SerializedName("combine_image_result")
124    public CombineImageResult combineImageResult;
125  
126    @SerializedName("cut_out_result")
127    public CutOutResult cutOutResult;
128  }
129  
130  public enum ImageGenerationType {
131    @SerializedName("COMBINE_IMAGE")
132    COMBINE_IMAGE,
133    @SerializedName("CUT_OUT")
134    CUT_OUT
135  }
136  
137  public enum TaskState {
138    @SerializedName("PROCESSING")
139    PROCESSING,
140    @SerializedName("FAIL")
141    FAIL,
142    @SerializedName("SUCCESS")
143    SUCCESS
144  }
145  
146  public static class CombineImageResult {
147    @SerializedName("image_url")
148    public String imageUrl;
149  }
150  
151  public static class CutOutResult {
152    @SerializedName("image_url")
153    public String imageUrl;
154  }
155  
156}
157

1package main
2
3import (
4	"demo/wxpay_brand_utility" // 引用微信支付工具库，参考 https://pay.weixin.qq.com/doc/brand/4015826866
5	"encoding/json"
6	"fmt"
7	"net/http"
8	"net/url"
9	"strings"
10)
11
12func main() {
13	// TODO: 请准备商户开发必要参数，参考：https://pay.weixin.qq.com/doc/brand/4015415289
14	config, err := wxpay_brand_utility.CreateBrandConfig(
15		"xxxxxxxx",                   // 品牌ID，是由微信支付系统生成并分配给每个品牌方的唯一标识符，品牌ID获取方式参考 https://pay.weixin.qq.com/doc/brand/4015415289
16		"1DDE55AD98Exxxxxxxxxx",      // 品牌API证书序列号，如何获取请参考 https://pay.weixin.qq.com/doc/brand/4015407570
17		"/path/to/apiclient_key.pem", // 品牌API证书私钥文件路径，本地文件路径
18		"PUB_KEY_ID_xxxxxxxxxxxxx",   // 微信支付公钥ID，如何获取请参考 https://pay.weixin.qq.com/doc/brand/4015453439
19		"/path/to/wxp_pub.pem",       // 微信支付公钥文件路径，本地文件路径
20	)
21	if err != nil {
22		fmt.Println(err)
23		return
24	}
25
26	request := &GetImageGenerationTaskRequest{
27		TaskId:              wxpay_brand_utility.String("image_generation_task_1"),
28		ImageGenerationType: IMAGEGENERATIONTYPE_COMBINE_IMAGE.Ptr(),
29	}
30
31	response, err := GetImageGenerationTask(config, request)
32	if err != nil {
33		fmt.Printf("请求失败: %+v\n", err)
34		// TODO: 请求失败，根据状态码执行不同的处理
35		return
36	}
37
38	// TODO: 请求成功，继续业务逻辑
39	fmt.Printf("请求成功: %+v\n", response)
40}
41
42func GetImageGenerationTask(config *wxpay_brand_utility.BrandConfig, request *GetImageGenerationTaskRequest) (response *ImageGenerationTask, err error) {
43	const (
44		host   = "https://api.mch.weixin.qq.com"
45		method = "GET"
46		path   = "/brand/marketing/product-coupon/image-generation-tasks/{task_id}"
47	)
48
49	reqUrl, err := url.Parse(fmt.Sprintf("%s%s", host, path))
50	if err != nil {
51		return nil, err
52	}
53	reqUrl.Path = strings.Replace(reqUrl.Path, "{task_id}", url.PathEscape(*request.TaskId), -1)
54	query := reqUrl.Query()
55	if request.ImageGenerationType != nil {
56		query.Add("image_generation_type", fmt.Sprintf("%v", *request.ImageGenerationType))
57	}
58	reqUrl.RawQuery = query.Encode()
59	httpRequest, err := http.NewRequest(method, reqUrl.String(), nil)
60	if err != nil {
61		return nil, err
62	}
63	httpRequest.Header.Set("Accept", "application/json")
64	httpRequest.Header.Set("Wechatpay-Serial", config.WechatPayPublicKeyId())
65	authorization, err := wxpay_brand_utility.BuildAuthorization(config.BrandId(), config.CertificateSerialNo(), config.PrivateKey(), method, reqUrl.RequestURI(), nil)
66	if err != nil {
67		return nil, err
68	}
69	httpRequest.Header.Set("Authorization", authorization)
70
71	client := &http.Client{}
72	httpResponse, err := client.Do(httpRequest)
73	if err != nil {
74		return nil, err
75	}
76	respBody, err := wxpay_brand_utility.ExtractResponseBody(httpResponse)
77	if err != nil {
78		return nil, err
79	}
80	if httpResponse.StatusCode >= 200 && httpResponse.StatusCode < 300 {
81		// 2XX 成功，验证应答签名
82		err = wxpay_brand_utility.ValidateResponse(
83			config.WechatPayPublicKeyId(),
84			config.WechatPayPublicKey(),
85			&httpResponse.Header,
86			respBody,
87		)
88		if err != nil {
89			return nil, err
90		}
91		response := &ImageGenerationTask{}
92		if err := json.Unmarshal(respBody, response); err != nil {
93			return nil, err
94		}
95
96		return response, nil
97	} else {
98		return nil, wxpay_brand_utility.NewApiException(
99			httpResponse.StatusCode,
100			httpResponse.Header,
101			respBody,
102		)
103	}
104}
105
106type GetImageGenerationTaskRequest struct {
107	TaskId              *string              `json:"task_id,omitempty"`
108	ImageGenerationType *ImageGenerationType `json:"image_generation_type,omitempty"`
109}
110
111func (o *GetImageGenerationTaskRequest) MarshalJSON() ([]byte, error) {
112	type Alias GetImageGenerationTaskRequest
113	a := &struct {
114		TaskId              *string              `json:"task_id,omitempty"`
115		ImageGenerationType *ImageGenerationType `json:"image_generation_type,omitempty"`
116		*Alias
117	}{
118		// 序列化时移除非 Body 字段
119		TaskId:              nil,
120		ImageGenerationType: nil,
121		Alias:               (*Alias)(o),
122	}
123	return json.Marshal(a)
124}
125
126type ImageGenerationTask struct {
127	TaskId              *string              `json:"task_id,omitempty"`
128	ImageGenerationType *ImageGenerationType `json:"image_generation_type,omitempty"`
129	TaskState           *TaskState           `json:"task_state,omitempty"`
130	CombineImageResult  *CombineImageResult  `json:"combine_image_result,omitempty"`
131	CutOutResult        *CutOutResult        `json:"cut_out_result,omitempty"`
132}
133
134type ImageGenerationType string
135
136func (e ImageGenerationType) Ptr() *ImageGenerationType {
137	return &e
138}
139
140const (
141	IMAGEGENERATIONTYPE_COMBINE_IMAGE ImageGenerationType = "COMBINE_IMAGE"
142	IMAGEGENERATIONTYPE_CUT_OUT       ImageGenerationType = "CUT_OUT"
143)
144
145type TaskState string
146
147func (e TaskState) Ptr() *TaskState {
148	return &e
149}
150
151const (
152	TASKSTATE_PROCESSING TaskState = "PROCESSING"
153	TASKSTATE_FAIL       TaskState = "FAIL"
154	TASKSTATE_SUCCESS    TaskState = "SUCCESS"
155)
156
157type CombineImageResult struct {
158	ImageUrl *string `json:"image_url,omitempty"`
159}
160
161type CutOutResult struct {
162	ImageUrl *string `json:"image_url,omitempty"`
163}
164