问OCR请求1308，下载图片失败？

文件长度:165924

文件大小:162KB

URL:https://recognition.image.myqcloud.com/ocr/drivinglicence

Authorization:iWv1dxpmmidbiRE0u2ZZHoLbLv9hPTEyNTk2MTIxODAmYj10ZXN0Jms9QUtJRG5Pa3FnSjB4eTFyVHB3ZFV3OUxLNFlucWZGYzBjQXNRJnQ9MTU2MjczMDYwNCZlPTE1NjQzMTQ5MzQ5MzQmcj0xMjU1NzMzOTkw

返回参数：{"code":-1308,"message":"DOWNLOAD_FAILED_ERROR","seq":"53b6e281-e4f2-425d-b1f8-78c29be57569","data":{}}

请求代码如下：

/**

* 1、每个请求的包体大小限制为6MB

*/

public static void main(String[] args) {

// 1、读取图片的Base64

String fileName = "C:\\Disk-F\\driver-front.jpg";

String base64pic = getStreamString(fileName);

// 2、签名

long expireTime = System.currentTimeMillis() + 6 * 60 * 60 * 1000; // 6小时

String sign = null;

try {

sign = getSign("test", expireTime);

} catch (Exception e) {

e.printStackTrace();

}

// 3、生成请求JSON数据

JSONObject json = new JSONObject();

json.put("appid", APP_ID);

json.put("bucket", "test");

json.put("type", "0"); // 0 表示行驶证，1 表示驾驶证，2 表示行驶证副页

json.put("url", base64pic);

// 4、发送请求

sendPayRequest(DRIVER_URL, sign, json.toJSONString());

}

// Content-Length 要判断一下 strReqJsonStr 的大小 不能超过 6M = 6*1024*1024

public static String sendPayRequest(String apiUrl, String sign, String strReqJsonStr) {

String resultStr = null;

HttpURLConnection httpURLConnection = null;

PrintWriter out = null;

BufferedReader in = null;

try {

URL url = new URL(apiUrl);

httpURLConnection = (HttpURLConnection) url.openConnection();

httpURLConnection.setRequestMethod("POST");

httpURLConnection.setDoInput(true);

httpURLConnection.setDoOutput(true);

httpURLConnection.setRequestProperty("Authorization", sign); // 设置签名

httpURLConnection.setRequestProperty("Content-Type", "application/json");

httpURLConnection.setRequestProperty("Content-Length", "165924");

httpURLConnection.setRequestProperty("Accept-Charset", "UTF-8");

// 发送POST请求参数

out = new PrintWriter(httpURLConnection.getOutputStream());

out.write(strReqJsonStr);

out.flush();

// 读取响应

if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {

StringBuffer content = new StringBuffer();

String tempStr = null;

in = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));

while ((tempStr = in.readLine()) != null) {

content.append(tempStr);

}

System.out.println("================== 请求后收到返回参数：" + content.toString());

// 转换成json对象

com.alibaba.fastjson.JSONObject respJson = JSON.parseObject(content.toString());

return respJson.toString();

} else {

System.out.println("================== 网络异常：" + httpURLConnection.getResponseCode());

return resultStr;

}

} catch (Exception e) {

e.printStackTrace();

return resultStr;

} finally {

if (out != null) {

out.close();

}

httpURLConnection.disconnect();

}

}