印刷文字识别-行驶证识别使用记录

布满荆棘的人生 2022-05-10 02:56 185阅读 0赞

一，前言

因业务需要，系统需要实现行驶证识别功能。本着节约时间成本，循序渐进的原则，该功能直接调用阿里的相关接口，现将调试过程记录在下。

二，正文

1，接口地址：

[https://market.aliyun.com/products/57002003/cmapi011791.html?spm=5176.2020520132.101.5.2dbb7218f8T1AG\#sku=yuncode579100000][https_market.aliyun.com_products_57002003_cmapi011791.html_spm_5176.2020520132.101.5.2dbb7218f8T1AG_sku_yuncode579100000]

2，在线调试：

![70][]

![70 1][]

3，接下来就是把这项功能移动到项目当中去

（1）antd+react前端上传照片：

组件初始化

class VehicleLicenseTab extends Component {
        state = {
            previewVisible: false,
            previewImage: '',
            positiveList:[],
            contraryList:[],
            workId: null,
            positivePhoto:null,//正面照片
            contraryPhoto:null,//反面照片
            positiveWordsState:false,//正面照片置空标识
            contraryWordsState:false,//反面照片置空标识
    
        };

操作函数：

handleCancel = () => this.setState({ previewVisible: false });//关闭窗口
    
        handlePreview = (file) => {//预览图片
            this.setState({
                previewImage: file.url || file.thumbUrl,
                previewVisible: true,
            });
        };
        handleChange = ({ fileList }) => this.setState({ fileList });//事件触发
    
        handlePositiveChange = (e) =>{//事件触发具体函数
            this.setState({positiveList:e.fileList});
            if(e.file.response!==undefined){
                //console.log("----handlePositiveChange--"+JSON.stringify(e.file.response.fileName))
                this.setState({positivePhoto:e.file.response.positivePhoto});
            }
            if(this.state.positiveWordsState){//删除时，将该图片对象置空
                this.setState({positivePhoto:null});
            }
            this.setState({positiveWordsState:false})
    
        };
        handleContraryChange = (e) =>{
            this.setState({contraryList:e.fileList});
            if(e.file.response!==undefined){
                //console.log("----handleContraryChange--"+JSON.stringify(e.file.response.fileName))
                this.setState({contraryPhoto:e.file.response.positivePhoto});
            }
            if(this.state.contraryWordsState){//删除时，将该图片对象置空
                this.setState({contraryPhoto:null});
            }
            this.setState({contraryWordsState:false})
        }
    
        handlePositiveRemove =(file) =>{//删除事件
            delAtta(this.props.workId,'vehiclelicense/positive',file.response.fileName);
            this.setState({positiveWordsState:true});
        }
        handleContraryRemove =(file) =>{
            delAtta(this.props.workId,'vehiclelicense/contrary',file.response.fileName);
            this.setState({contraryWordsState:true});
        }
    
    
        beforeUpload =(file) =>{//上传限制，大小或格式
            const isJPG = (file.type === 'image/jpeg' || file.type === 'image/png');
            if (!isJPG) {
                message.error('只能上传JPG文件!');
            }
            const isLt50M = file.size / 1024 / 1024 < 1.5;
            if (!isLt50M) {
                message.error('文件大小必须小于1.5MB!');
            }
            return isJPG && isLt50M;
        };

渲染：

render() {
            const { previewVisible, previewImage, positiveList,contraryList,positivePhoto,contraryPhoto} = this.state;
            const {form} = this.props;
            // this.getCarPhoto();deng
            const actionURL=config.HOST+'/cardIdentification/post/';
            const positiveData={userToken: JSON.parse(localStorage.getItem('user')).token,
                workId:this.props.workId,
                type:'positive',
                catalog:'vehiclelicense/positive'};
            const contraryData={userToken: JSON.parse(localStorage.getItem('user')).token,
                workId:this.props.workId,
                type:'contrary',
                catalog:'vehiclelicense/contrary'};
    
            const uploadButton = (
                <div>
                    <Icon type="plus" />
                    <div className="ant-upload-text">请上传行驶证</div>
                </div>
            );
    
            const {getFieldDecorator} = form;
            const formItemLayout = {
                labelCol: {span: 8},
                wrapperCol: {span: 8},
            };

布局代码：略。

（2）提交请求：

通过antd的upload的封装的url将请求发送给后端控制层进行处理。

（3）请求处理：后端

package com.xy.loan.controller;
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONArray;
    import com.alibaba.fastjson.JSONException;
    /**
     * 图像识别类控制层
     * @author Administrator
     *
     */
    import com.alibaba.fastjson.JSONObject;
    import com.xy.loan.bc.CustomerModelNameBc;
    import com.xy.loan.bc.DBStatus;
    import com.xy.loan.entity.ContractFile;
    import com.xy.loan.exception.LoanBizExceptionCode;
    import com.xy.loan.util.HttpUtils;
    import com.xy.loan.util.ModelHelper;
    
    import org.apache.commons.lang3.StringUtils;
    import org.apache.http.HttpResponse;
    import org.apache.http.util.EntityUtils;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.multipart.MultipartFile;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.Map;
    
    import javax.servlet.http.HttpServletRequest;
    
    import static org.apache.commons.codec.binary.Base64.encodeBase64;
    @Controller
    @RequestMapping("cardIdentification")
    public class CardIdentificationController extends BaseController{
    	
    	@Value("#{settings['upload.path']}")
    	private String uploadPath;
    	@Value("#{settings['upload.path.photo']}")
    	private String uploadPathPhoto;
    	/**
    	 * 上传图片
    	 * @param model
    	 * @param request
    	 * @param file
    	 */
    	@RequestMapping(value = "/post", method = RequestMethod.POST)
    	public void post(Model model, HttpServletRequest request, @RequestParam("file") MultipartFile file) {
    		String catalog = request.getParameter("catalog");
    		String workId = request.getParameter("workId");
    		String type = request.getParameter("type");
    		// 判断文件是否为空
    		if (!file.isEmpty()) {
    			try {
    				//TODO 乱码解决的临时方法
    				String filePath = getFileDir(workId, catalog,type);
    //				String fileName = file.getOriginalFilename();
    				String fileName = (System.currentTimeMillis())+".jpg";//时间戳重命名图片，
    //				String fileRealName = CustomerModelNameBc.valueToCode(fileName);
    				File fileTo = new File(filePath+fileName);
    				// 转存文件
    				file.transferTo(fileTo);
    				String host = "https://dm-53.data.aliyun.com";
    		        String path = "/rest/160601/ocr/ocr_vehicle.json";
    		        String appcode = "1f7d4b7f96214b61876ee4abf9c55b46";
    //		        String imgFile = "/opt/www/files/files/1/carphoto/body/timg.jpg";
    		        Boolean is_old_format = false;//如果文档的输入中含有inputs字段，设置为True， 否则设置为False
    		        //请根据线上文档修改configure字段
    		        JSONObject configObj = new JSONObject();
    		        if("positive".equals(type)){
    		        	configObj.put("side", "face");
    		        	}else{
    			        configObj.put("side", "back");
    		        	}
    		        String config_str = configObj.toString();
    		        //            configObj.put("min_size", 5);
    		        //            String config_str = "";
    
    		        String method = "POST";
    		        Map<String, String> headers = new HashMap<String, String>();
    		        //最后在header中的格式(中间是英文空格)为Authorization:APPCODE 83359fd73fe94948385f570e3c139105
    		        headers.put("Authorization", "APPCODE " + appcode);
    
    		        Map<String, String> querys = new HashMap<String, String>();
    
    		        // 对图像进行base64编码
    		        String imgBase64 = "";
    		        try {
    //		            File file1 = new File(imgFile);
    		            byte[] content = new byte[(int) fileTo.length()];
    		            FileInputStream finputstream = new FileInputStream(fileTo);
    		            finputstream.read(content);
    		            finputstream.close();
    		            imgBase64 = new String(encodeBase64(content));
    		        } catch (IOException e) {
    		            e.printStackTrace();
    		            return;
    		        }
    		        // 拼装请求body的json字符串
    		        JSONObject requestObj = new JSONObject();
    		        try {
    		            if(is_old_format) {
    		                JSONObject obj = new JSONObject();
    		                obj.put("image", getParam(50, imgBase64));
    		                if(config_str.length() > 0) {
    		                    obj.put("configure", getParam(50, config_str));
    		                }
    		                JSONArray inputArray = new JSONArray();
    		                inputArray.add(obj);
    		                requestObj.put("inputs", inputArray);
    		            }else{
    		                requestObj.put("image", imgBase64);
    		                if(config_str.length() > 0) {
    		                    requestObj.put("configure", config_str);
    		                }
    		            }
    		        } catch (JSONException e) {
    		            e.printStackTrace();
    		        }
    		        String bodys = requestObj.toString();
    
    		        try {
    		            /**
    		             * 重要提示如下:
    		             * HttpUtils请从
    		             * https://github.com/aliyun/api-gateway-demo-sign-java/blob/master/src/main/java/com/aliyun/api/gateway/demo/util/HttpUtils.java
    		             * 下载
    		             *
    		             * 相应的依赖请参照
    		             * https://github.com/aliyun/api-gateway-demo-sign-java/blob/master/pom.xml
    		             */
    		            HttpResponse response = HttpUtils.doPost(host, path, method, headers, querys, bodys);
    		            int stat = response.getStatusLine().getStatusCode();
    		            if(stat != 200){
    		                System.out.println("Http code: " + stat);
    		                System.out.println("http header error msg: "+ response.getFirstHeader("X-Ca-Error-Message"));
    		                System.out.println("Http body error msg:" + EntityUtils.toString(response.getEntity()));
    		                return;
    		            }
    
    		            String res = EntityUtils.toString(response.getEntity());
    		            JSONObject res_obj = JSON.parseObject(res);
    		            if(is_old_format) {
    		                JSONArray outputArray = res_obj.getJSONArray("outputs");
    		                String output = outputArray.getJSONObject(0).getJSONObject("outputValue").getString("dataValue");
    		                JSONObject out = JSON.parseObject(output);
    		                System.out.println(out.toJSONString());
    		            }else{
    		                System.out.println("-行驶证：-"+res_obj.toJSONString());
    		            }
    		            model.addAttribute("positivePhoto", res_obj);
    		            model.addAttribute("fileName", fileName);
    		        } catch (Exception e) {
    		            e.printStackTrace();
    		        }
    		        
    				ModelHelper.addValidateInfo(model, LoanBizExceptionCode.EXCEPTION_10000000);
    			} catch (Exception e) {
    				e.printStackTrace();
    				ModelHelper.addValidateInfo(model, LoanBizExceptionCode.EXCEPTION_10000002);
    			}
    		}
    	}
    	
    	/**
    	 * 获取上传路径
    	 * @param workId
    	 * @param catalog
    	 * @return
    	 */
    	private String getFileDir(String workId, String catalog,String type) {
    		String dirPath = "";
    		// 车辆照片保存到图片目录
    		if (StringUtils.isNotBlank(catalog) && catalog.contains("carphoto")) {
    			dirPath = uploadPathPhoto;
    		} else if (StringUtils.isNotBlank(catalog)) {
    			dirPath = uploadPath;
    		}
    		//合同模板上传
    		if ("contractModel".equals(type)) {
    			dirPath = dirPath+ catalog;
    		}else {
    			// uploadPath ;//+ File.separatorChar + workId;
    			if (workId != null && !("".equals(workId))&&!("undefined".equals(workId))) {
    				dirPath = dirPath + File.separatorChar + workId+File.separatorChar;
    			}
    			if (catalog != null && !("null".equals(catalog))) {
    				dirPath = dirPath + File.separatorChar + catalog+File.separatorChar;
    			}
    		}
    		File dir = new File(dirPath);
    		if (!dir.exists()) {
    			dir.mkdirs();
    		}
    		return dirPath;
    	}
    
    	
    	
    	
    	public static JSONObject getParam(int type, String dataValue) {
            JSONObject obj = new JSONObject();
            try {
                obj.put("dataType", type);
                obj.put("dataValue", dataValue);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            return obj;
        }
    	
    	/**
    	 * 删除附件
    	 * 
    	 * @param model
    	 * @param workId
    	 * @param catalog
    	 * @param fileName
    	 */
    	@RequestMapping(value = "/delete", method = RequestMethod.GET)
    	public void delete(Model model, String workId, String catalog, String fileName,String type,String filePath) {
    		try {
    			if (StringUtils.isEmpty(filePath)) {//有文件路径的时候直接按照路径删除
    				filePath = getFileDir(workId, catalog,type) + fileName;
    			}
    			File file = new File(filePath);
    			if (file.delete()) {
    				ModelHelper.addValidateInfo(model, LoanBizExceptionCode.EXCEPTION_10000000);
    				return;
    			}
    		} catch (Exception e) {
    			LOGGER.error(e.getMessage());
    		}
    
    		ModelHelper.addValidateInfo(model, LoanBizExceptionCode.EXCEPTION_10000002);
    	}
    }

HttpUtils.java（请求处理工具类）

package com.xy.loan.util;
    /**
     * 用于行驶证图像识别
     * @author Administrator
     *
     */
    import java.io.UnsupportedEncodingException;
    import java.net.URLEncoder;
    import java.security.KeyManagementException;
    import java.security.NoSuchAlgorithmException;
    import java.security.cert.X509Certificate;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.X509TrustManager;
    
    import org.apache.commons.lang.StringUtils;
    import org.apache.http.HttpResponse;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.HttpDelete;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.client.methods.HttpPut;
    import org.apache.http.conn.ClientConnectionManager;
    import org.apache.http.conn.scheme.Scheme;
    import org.apache.http.conn.scheme.SchemeRegistry;
    import org.apache.http.conn.ssl.SSLSocketFactory;
    import org.apache.http.entity.ByteArrayEntity;
    import org.apache.http.entity.StringEntity;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.message.BasicNameValuePair;
    
    public class HttpUtils {
    	/**
    	 * get
    	 * 
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doGet(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpGet request = new HttpGet(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
            
            return httpClient.execute(request);
        }
    	
    	/**
    	 * post form
    	 * 
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @param bodys
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doPost(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys, 
    			Map<String, String> bodys)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpPost request = new HttpPost(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
    
            if (bodys != null) {
                List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
    
                for (String key : bodys.keySet()) {
                    nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key)));
                }
                UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8");
                formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
                request.setEntity(formEntity);
            }
    
            return httpClient.execute(request);
        }	
    	
    	/**
    	 * Post String
    	 * 
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @param body
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doPost(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys, 
    			String body)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpPost request = new HttpPost(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
    
            if (StringUtils.isNotBlank(body)) {
            	request.setEntity(new StringEntity(body, "utf-8"));
            }
    
            return httpClient.execute(request);
        }
    	
    	/**
    	 * Post stream
    	 * 
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @param body
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doPost(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys, 
    			byte[] body)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpPost request = new HttpPost(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
    
            if (body != null) {
            	request.setEntity(new ByteArrayEntity(body));
            }
    
            return httpClient.execute(request);
        }
    	
    	/**
    	 * Put String
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @param body
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doPut(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys, 
    			String body)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpPut request = new HttpPut(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
    
            if (StringUtils.isNotBlank(body)) {
            	request.setEntity(new StringEntity(body, "utf-8"));
            }
    
            return httpClient.execute(request);
        }
    	
    	/**
    	 * Put stream
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @param body
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doPut(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys, 
    			byte[] body)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpPut request = new HttpPut(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
    
            if (body != null) {
            	request.setEntity(new ByteArrayEntity(body));
            }
    
            return httpClient.execute(request);
        }
    	
    	/**
    	 * Delete
    	 *  
    	 * @param host
    	 * @param path
    	 * @param method
    	 * @param headers
    	 * @param querys
    	 * @return
    	 * @throws Exception
    	 */
    	public static HttpResponse doDelete(String host, String path, String method, 
    			Map<String, String> headers, 
    			Map<String, String> querys)
                throws Exception {    	
        	HttpClient httpClient = wrapClient(host);
    
        	HttpDelete request = new HttpDelete(buildUrl(host, path, querys));
            for (Map.Entry<String, String> e : headers.entrySet()) {
            	request.addHeader(e.getKey(), e.getValue());
            }
            
            return httpClient.execute(request);
        }
    	
    	private static String buildUrl(String host, String path, Map<String, String> querys) throws UnsupportedEncodingException {
        	StringBuilder sbUrl = new StringBuilder();
        	sbUrl.append(host);
        	if (!StringUtils.isBlank(path)) {
        		sbUrl.append(path);
            }
        	if (null != querys) {
        		StringBuilder sbQuery = new StringBuilder();
            	for (Map.Entry<String, String> query : querys.entrySet()) {
            		if (0 < sbQuery.length()) {
            			sbQuery.append("&");
            		}
            		if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
            			sbQuery.append(query.getValue());
                    }
            		if (!StringUtils.isBlank(query.getKey())) {
            			sbQuery.append(query.getKey());
            			if (!StringUtils.isBlank(query.getValue())) {
            				sbQuery.append("=");
            				sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
            			}        			
                    }
            	}
            	if (0 < sbQuery.length()) {
            		sbUrl.append("?").append(sbQuery);
            	}
            }
        	
        	return sbUrl.toString();
        }
    	
    	private static HttpClient wrapClient(String host) {
    		HttpClient httpClient = new DefaultHttpClient();
    		if (host.startsWith("https://")) {
    			sslClient(httpClient);
    		}
    		
    		return httpClient;
    	}
    	
    	private static void sslClient(HttpClient httpClient) {
            try {
                SSLContext ctx = SSLContext.getInstance("TLS");
                X509TrustManager tm = new X509TrustManager() {
                    public X509Certificate[] getAcceptedIssuers() {
                        return null;
                    }
                    public void checkClientTrusted(X509Certificate[] xcs, String str) {
                    	
                    }
                    public void checkServerTrusted(X509Certificate[] xcs, String str) {
                    	
                    }
                };
                ctx.init(null, new TrustManager[] { tm }, null);
                SSLSocketFactory ssf = new SSLSocketFactory(ctx);
                ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
                ClientConnectionManager ccm = httpClient.getConnectionManager();
                SchemeRegistry registry = ccm.getSchemeRegistry();
                registry.register(new Scheme("https", 443, ssf));
            } catch (KeyManagementException ex) {
                throw new RuntimeException(ex);
            } catch (NoSuchAlgorithmException ex) {
            	throw new RuntimeException(ex);
            }
        }
    }

OK，大功告成：最终效果

![70 2][]

[https_market.aliyun.com_products_57002003_cmapi011791.html_spm_5176.2020520132.101.5.2dbb7218f8T1AG_sku_yuncode579100000]: https://market.aliyun.com/products/57002003/cmapi011791.html?spm=5176.2020520132.101.5.2dbb7218f8T1AG#sku=yuncode579100000
[70]: /images/20220510/42ce42aee8424b3f9a795ac766af5da9.png
[70 1]: /images/20220510/7432c5a97070406694c1d0eab9821f43.png
[70 2]: /images/20220510/881c605124e8473d81facb65e5e3cc30.png