微信对接百度实现文字识别OCR

梦里梦外; 2024-04-03 14:07 86阅读 0赞

## 微信对接百度实现文字识别OCR ##

前置基础条件：  
①注册测试账号  
②开通自己的测试公众号  
③完成与微信互发消息  
④完成自定义菜单栏  
详细步骤：https://blog.csdn.net/weixin\_45565886/category\_12059118.html

### 1 获取到百度文字识别API ###

①注册百度智能云账号:https://ai.baidu.com/  
②开通文字识别应用【个人测试是免费的，申请即可】  
![在这里插入图片描述][6dbc5abbc3ee49fdbcac54dc17c1dc69.png]

③在控制台拿到相关参数  
![在这里插入图片描述][adbfb965bbc94c7793154fcc2f401c76.png]

接口文档：https://cloud.baidu.com/doc/OCR/s/Nkibizxlf\#%E9%80%9A%E7%94%A8%E6%96%87%E5%AD%97%E8%AF%86%E5%88%AB

### 2 定义上传图片按钮 ###

官方文档：https://developers.weixin.qq.com/doc/offiaccount/Custom\_Menus/Creating\_Custom-Defined\_Menu.html

定义图片按钮：

@Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class PicButton extends AbstractButton{
        
        private String type = "pic_photo_or_album";
        private String key;
        private List<AbstractButton> sub_button = new ArrayList<>();
    
        public PicButton(String name){
        
            super(name);
        }
    }

### 3 定义service处理图片消息 ###

@Service
    public class WxService {
        
    
    	/**
         * 测试图片文字识别
         * @param requestMap
         * @return
         */
        public String testOCR(Map<String, String> requestMap){
        
            // 初始化一个AipOcr
            AipOcr client = new AipOcr(APP_ID, API_KEY, SECRET_KEY);
    
            // 传入可选参数调用接口
            HashMap<String, String> options = new HashMap<String, String>();
    //        options.put("language_type", "CHN_ENG");
    //        options.put("detect_direction", "true");
    //        options.put("detect_language", "true");
    //        options.put("probability", "true");
    
    //        // 参数为本地图片路径
    //        String image = "test.jpg";
    //        org.json.JSONObject res = client.basicGeneral(image, options);
    //        System.out.println(res.toString(2));
    
            // 通用文字识别, 图片参数为远程url图片
            String url = requestMap.get("PicUrl");
            System.out.println("picUrl:" + url);
            org.json.JSONObject res = client.basicGeneralUrl(url, options);
            System.out.println("res===" + res.toString());
            JSONArray jsonArray = res.getJSONArray("words_result");
            Iterator<Object> iterator = jsonArray.iterator();
            //拼接识别的文字结果
            StringBuilder stb = new StringBuilder();
            while(iterator.hasNext()){
        
                org.json.JSONObject next = (org.json.JSONObject) iterator.next();
                stb.append(next.get("words"));
            }
            return stb.toString();
        }
    
    
    	/**
         * 返回的消息
         *
         * @param requestMap
         * @return
         */
        public String getResponse(Map<String, String> requestMap) {
        
            String msgType = requestMap.get("MsgType");
            //要返回的消息
            BaseMessage rtnMsg = null;
            switch (msgType) {
        
                //根据消息类型，处理不同消息
                case "text":
                    rtnMsg = dealTextMessage(requestMap);
                case "image":
                    //TODO
                    rtnMsg = dealPicMessage(requestMap);
                    break;
                case "voice":
    
                    break;
                case "video":
    
                    break;
                case "shortvideo":
    
                    break;
                case "location":
    
                    break;
                case "link":
    
                    break;
                default:
                    break;
            }
            return beanToXML(rtnMsg);
        }
    
        //处理图片消息
        private BaseMessage dealPicMessage(Map<String, String> requestMap) {
        
            //测试百度文字识别【OCR】
            String rtnMsg = testOCR(requestMap);
    //        String returnMsg = "收到图片！！！";
            TextMessage tm = new TextMessage(requestMap, rtnMsg);
            return tm;
        }

### 4 测试 ###

自定义菜单页面：  
![在这里插入图片描述][690d442ea37048c89655b15a3ce7a069.png]

发送图片结果：  
![在这里插入图片描述][d7b58c9ac75345b88593c0af3f43bb1d.png]

[6dbc5abbc3ee49fdbcac54dc17c1dc69.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/a59ffa39d5e947648bd8bc46e4691df9.png
[adbfb965bbc94c7793154fcc2f401c76.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/e3e4857746604969add63d22b57760bd.png
[690d442ea37048c89655b15a3ce7a069.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/5bb0a24d2c2f483aa80b29e69cb9c354.png
[d7b58c9ac75345b88593c0af3f43bb1d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/5fd5b632429a43029c6f2edf7f617d66.png