圖片美化加強AI接口調用手冊

在調合合AI平臺提供的圖片美化加強API接口,API平臺連接:https://ai.ccint.com/doc/api/crop_enhance_image, 由於有遇到一些問題,寫篇博客記錄一下java

API文檔提供的說明: url中參數app_key爲我的中心實例的app_keyapache

請求方式: POSTjson

返回類型: JSONapi

POST BODY請求字段描述服務器

字段 說明
image_data 必填,圖像的base64串
app_secret 必填,我的中心實例的app_secret
scan-m 掃描模式, 建議爲 1
detail 銳化程度,建議爲-1
contrast 對比度 ,建議爲 0
bright 增亮 ,建議爲 0
enhanceMode 加強模式,1:增亮,2:加強並銳化,3:黑白,4:灰度

POST BODY,接口要求以Post body方式發送,由於要傳base64字符串,請求參數過長有400錯誤的app

{
    "image_data": "", // 必填,圖像的base64串
    "app_secret": "" // 必填,我的中心實例的app_secret
  "scan-m": 1, //掃描模式, 建議爲 1
  "detail": -1, //銳化程度,建議爲-1
  "contrast": 0, //對比度 ,建議爲 0
  "bright": 0, //增亮 ,建議爲 0
  "enhanceMode": 0 //加強模式,1:增亮,2:加強並銳化,3:黑白,4:灰度
}

提示:POST BODY 爲 JSON字符串。工具

返回字段描述編碼

字段 說明
code 返回狀態碼。200:正常返回; 500:服務器內部錯誤
message 返回對應code的狀態說明
result base64編碼的圖片信息

正常返回示例url

{
    "code": 200,
    "message": "success",
    "result": 「圖片base64信息」
}

失敗返回示例.net

{
    "code":30301,
    "message":"額度已用完,請充值後使用"
}

返回碼說明
在這裏插入圖片描述
API文檔提供的實例代碼:

import sun.misc.BASE64Encoder;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

public class Main {
    public static void main(String[] args) throws Exception {
        String url = "https://ocr-api.ccint.com/ocr_service?app_key=%s";
        String appKey = "xxxxxx"; // your app_key
      String appSecret = "xxxxxx"; // your app_secret
      url = String.format(url, appKey);
        OutputStreamWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            String imgData = imageToBase64("example.jpg");
            String param="{\"app_secret\":\"%s\",\"image_data\":\"%s\"}";
            param=String.format(param,appSecret,imgData);
            URL realUrl = new URL(url);
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST"); // 設置請求方式
            conn.setRequestProperty("Content-Type", "application/json"); // 設置發送數據的
            conn.connect();
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            out.append(param);
            out.flush();
            out.close();
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("發送 POST 請求出現異常!" + e);
            e.printStackTrace();
        }
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        System.out.println(result);
    }
    public static String imageToBase64(String path)
    {
        String imgFile = path;
        InputStream in = null;
        byte[] data = null;
        try
        {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }
}

注意要點:

  • 寫文件流時記得outputstream要flush,才能拿到數據
  • 接口返回的json格式的數據,同時帶有base64的字符串,因此須要json解析一下,而後調工具類,將base64字符串轉換爲文件,保存在本地,下面給出調用的代碼,僅供參考
/**
     * 圖片切邊加強接口調用
     * @author nicky.ma
     * @date   2019年5月20日下午3:44:27
     * @param scanM   掃描模式, 建議爲 1
     * @param bright    增亮 ,建議爲 0
     * @param contrast   對比度 ,建議爲 0
     * @param detail     銳化程度,建議爲-1
     * @param sourcePath  
     * @param destPath
     * detail=0&contrast=0&bright=50  增到最亮
     * @return
     */
    public static void ccintCropEnhanceHttpService(final int scanM,final int bright,final int contrast,
            final int detail,final int enhanceMode,String sourcePath,String destPath) throws Exception{
        logger.info("sourcePath:{}"+sourcePath);
        logger.info("destPath:{}"+destPath);
        
        //base64轉換
        final String imgData = imageToBase64(sourcePath);
        
        Map<String,Object> paramsMap=new HashMap<String,Object>(){
        private static final long serialVersionUID=1L;
        {
                put("image_data",imgData);
                put("app_secret",CCINT_APP_SECRET);
                put("scan-m",scanM);
                put("detail",detail);
                put("contrast",contrast);
                put("bright",bright);
                put("enhanceMode",enhanceMode);
        }};
        String param = JSON.toJSONString(paramsMap);
        
//      String param="{\"app_secret\":\"%s\",\"image_data\":\"%s\",\"scan-m\":\"%s\",\"detail\":\"%s\",\"contrast\":\"%s\",\"bright\":\"%s\",\"enhanceMode\":\"%s\"}";
//      param=String.format(param,CCINT_APP_SECRET,imgData,scanM,detail,contrast,bright,enhanceMode);
        
        String url = CCINT_CROP_ENHANCE_URL+"?app_key="+CCINT_APP_KEY;
        OutputStreamWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            conn.setConnectTimeout(20*1000);
            conn.setReadTimeout(20*1000);
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("POST"); // 設置請求方式
            //conn.setRequestProperty("transfer-encoding","chunked");
            conn.setRequestProperty("Content-Type", "application/json"); // 設置發送數據的
            conn.connect();
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            out.append(param);
            //要記得flush,才能拿到數據
            out.flush();
            out.close();
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            logger.info("返回Result:{}"+result);
            int code=conn.getResponseCode();
            if(code==200){
                JSONObject obj = JSON.parseObject(result);
//              copyFileByInputStream(conn.getInputStream(),destPath);
                FileBase64Util.decoderBase64File(obj.getString("result"), destPath);
                logger.info("圖片加強後文件大小:{}"+new File(destPath).length()/1024+"KB");
            }
            conn.disconnect();

        } catch (Exception e) {
            logger.error("AI平臺接口調用異常:{}"+e);
            e.printStackTrace();
        }finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
    
    private static String imageToBase64(String path)
    {
        String imgFile = path;
        InputStream in = null;
        byte[] data = null;
        try
        {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }

base64字符串和文件轉換工具類:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

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

public class FileBase64Util{

     /**
      * 將文件轉成base64 字符串
      * @param path文件路徑
      * @return   
      * @throws Exception
      */
     public static String encodeBase64File(String path) throws Exception {
       File file = new File(path);
       FileInputStream inputFile = new FileInputStream(file);
       byte[] buffer = new byte[(int) file.length()];
       inputFile.read(buffer);
       inputFile.close();
       return Base64.encodeBase64String(buffer);
     }

     /**
      * 將base64字符解碼保存文件
      * @param base64String
      * @param targetPath
      * @throws Exception
      */

     public static void decoderBase64File(String base64String, String targetPath)throws Exception {
         byte[] buffer=Base64.decodeBase64(base64String);
         FileOutputStream out = new FileOutputStream(targetPath);
         out.write(buffer);
         out.close();
     }

     /**
      * 將base64字符保存文本文件
      * @param base64Code
      * @param targetPath
      * @throws Exception
      */

     public static void toFile(String base64Code, String targetPath)throws Exception {
        byte[] buffer=base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
      }

     public static void main(String[] args){
         try{
            String base64String=${base64字符串};
            decoderBase64File(encodeBase64File("d://2018-11-27 14_34_28_reject_dq.pdf"),"D:/2.pdf");
         }catch(Exception e){
            e.printStackTrace();
         }
     }
}
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