车牌识别

单独建一个包放下面的代码；
package com.p.service;

// 版权所有 © 艾科瑞特科技
// 艾科瑞特（iCREDIT）-让企业业绩长青
// 预知更多业绩长青，请与我们联系
// 联系电话：0532-88984128
// 联系邮箱：market@itruth.xin

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.apache.commons.codec.binary.Base64.encodeBase64;

//依赖请参照:https://icredit-code.oss-cn-hangzhou.aliyuncs.com/pom.xml
public class utils {

    public static String main(String imgpath) throws IOException {
        //API产品路径
        String requestUrl = "https://iplatecard.market.alicloudapi.com/ai_market/ai_ocr_universal/license_plate/v2";
        //阿里云APPCODE
        String appcode = "66bec7664be849b08ffaaa4cd98df46f";
        Map<String, String> headers = new HashMap<String, String>();
        headers.put("Authorization", "APPCODE " + appcode);
        //根据API的要求，定义相对应的Content-Type
        headers.put("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
        Map<String, String> bodys = new HashMap<String, String>();

        //内容数据类型，如：0，则表示BASE64编码；1，则表示图像文件URL链接

            //启用BASE64编码方式进行识别
            //内容数据类型是BASE64编码

            String imgBase64 = "";
            try {
                File file = new File(imgpath);
                byte[] content = new byte[(int) file.length()];
                FileInputStream finputstream = new FileInputStream(file);
                finputstream.read(content);
                finputstream.close();
                imgBase64 = new String(encodeBase64(content));
            } catch (IOException e) {
                e.printStackTrace();
            }
            bodys.put("IMAGE", imgBase64);
            bodys.put("IMAGE_TYPE", "0");



        String response=post(requestUrl, headers, bodys);

            System.out.println("response = " + response);

        return response;
    }

    public static String post(String url, Map<String, String> headers, Map<String, String> body) throws IOException {
        HttpClient client = new HttpClient();
        PostMethod postMethod = new PostMethod(url);
        // 必须设置下面这个Header
        for (String key : headers.keySet()) {
            postMethod.addRequestHeader(key, headers.get(key));
        }

        List<NameValuePair> bodyPair = new ArrayList<>();
        for (String key : body.keySet()) {
            bodyPair.add(new NameValuePair(key, body.get(key)));
        }
        NameValuePair[] bodyKvs = new NameValuePair[body.size()];
        postMethod.setRequestBody(bodyPair.toArray(bodyKvs));

        int code = client.executeMethod(postMethod);
        if (code == 200) {
            String res = postMethod.getResponseBodyAsString();
            System.out.println(res);
            return res;
        }
        else {
            System.out.println(code);
        }
        throw new IOException("请求失败");
    }
}

这些代码放到controller 里
  public String insertPark(ParkingTable parking, Model model, @RequestParam(value = "file", required = false) MultipartFile file1) throws IOException {
        String filePath = "D:\\Tupian"; //保存图片路径
        String originalpath = file1.getOriginalFilename();//原路径
        String newPath = UUID.randomUUID() + originalpath;
        File targetFile = new File(filePath, newPath);//保存全路径
        file1.transferTo(targetFile);//转移
       // 调用上面的utils类；
        String main = utils.main(targetFile.getPath());
         String NUMBER="";
        JSONObject json = JSONObject.fromObject(main);
        JSONArray content = json.getJSONArray("CAR_NUMBER_RECOGNITION_ENTITY");
        if (content.size() > 0) {
            for (int i = 0; i < content.size(); i++) {
                JSONObject job = content.getJSONObject(i);
                NUMBER= (String) job.get("NUMBER");

            }
        }
         .............
         .......
}

<form enctype="multipart/form-data"> 

<input type="file" name="file">

</form>