摘要：此文章是基本聚合數(shù)據(jù)證件識別接口來演示，基本請求上傳圖片并接收數(shù)據(jù)來處理。

此Java文章是基本聚合數(shù)據(jù)(https://www.juhe.cn/)-----證件識別接口來演示，基本HTTP POST請求上傳圖片并接收JSON數(shù)據(jù)來處理。

使用前你需要通過https://www.juhe.cn/docs/api/...申請一個名片識別的appkey
1.支持的證件類型清單
請求地址:http://api2.juheapi.com/cardr...您申請的appkey
此接口可通過GET請求得到結(jié)果,java網(wǎng)絡(luò)請求有HttpClient相關(guān)工具包及HttpURLConnection相關(guān)的包等，這里用的是HttpClient，需要先導包，如果用maven話會更方便直接把:

org.apache.httpcomponents  
httpmime  
4.3.6  
  
  
org.apache.httpcomponents  
httpclient  
4.4.1  
  

復制到配置文件 pom.xml
請求代碼如下：

public static String get() throws IOException {  
        // 創(chuàng)建HttpClient對象  
        CloseableHttpClient httpClient = HttpClients.createDefault();  
        CloseableHttpResponse response = null;  
        String result = null;  
        try {  
            HttpGet httpGet = new HttpGet("http://api2.juheapi.com/cardrecon/supportlist?key="+ appKey);  
            // 執(zhí)行網(wǎng)絡(luò)請求  
            response = httpClient.execute(httpGet);  
            // 獲取請求實體  
            HttpEntity resEntity = response.getEntity();  
            if (resEntity != null) {  
                // ConverStreamToString是下面寫的一個方法是把網(wǎng)絡(luò)請求的字節(jié)流轉(zhuǎn)換為utf8的字符串  
                result = ConvertStreamToString(resEntity.getContent(), "UTF-8");  
            }  
            EntityUtils.consume(resEntity);  
        } catch (Exception e) {  
        } finally {  
            // 關(guān)閉請求  
            response.close();  
            httpClient.close();  
        }  
        // 得到的是JSON類型的數(shù)據(jù)需要第三方解析JSON的jar包來解析  
        return result;  
    }  

2.證件圖片識別
請求地址:http://api2.juheapi.com/cardr...

// 此方法是POST請求上傳的參數(shù)中包含本地圖片信息File類型  
    public static String post(String type, File file) throws Exception {  
        CloseableHttpClient httpClient = HttpClients.createDefault();  
        CloseableHttpResponse response = null;  
        String result = null;  
        // HttpClient請求的相關(guān)設(shè)置，可以不用配置，用默認的參數(shù)，這里設(shè)置連接和超時時長(毫秒)  
        RequestConfig config = RequestConfig.custom().setConnectTimeout(30000).setSocketTimeout(30000).build();  
        try {  
            HttpPost httppost = new HttpPost("http://api2.juheapi.com/cardrecon/upload");  
            // FileBody封裝File類型的參數(shù)  
            FileBody bin = new FileBody(file);  
            // StringBody封裝String類型的參數(shù)  
            StringBody keyBody = new StringBody(key, ContentType.TEXT_PLAIN);  
            StringBody typeBody = new StringBody(type, ContentType.TEXT_PLAIN);  
            // addPart將參數(shù)傳入，并指定參數(shù)名稱  
            HttpEntity reqEntity = MultipartEntityBuilder.create()  
                    .addPart("pic", bin).addPart("key", keyBody)  
                    .addPart("cardType", typeBody).build();  
            httppost.setEntity(reqEntity);  
            httppost.setConfig(config);  
            // 執(zhí)行網(wǎng)絡(luò)請求并返回結(jié)果  
            response = httpClient.execute(httppost);  
            HttpEntity resEntity = response.getEntity();  
            if (resEntity != null) {  
                result = ConvertStreamToString(resEntity.getContent(), "UTF-8");  
            }  
            EntityUtils.consume(resEntity);  
        } finally {  
            response.close();  
            httpClient.close();  
        }  
        // 得到的是JSON類型的數(shù)據(jù)需要第三方解析JSON的jar包來解析  
        return result;  
    }  
   
    // 此方法是把傳進的字節(jié)流轉(zhuǎn)化為相應(yīng)的字符串并返回，此方法一般在網(wǎng)絡(luò)請求中用到  
    public static String ConvertStreamToString(InputStream is, String charset)  
            throws Exception {  
        StringBuilder sb = new StringBuilder();  
        try (InputStreamReader inputStreamReader = new InputStreamReader(is,charset)) {  
            try (BufferedReader reader = new BufferedReader(inputStreamReader)) {  
                String line = null;  
                while ((line = reader.readLine()) != null) {  
                    sb.append(line).append("
");  
                }  
            }  
        }  
        return sb.toString();  
    }