调用《自定义模版文字识别》 接口一直说缺少参数，       能帮看看什么情况。。。。

{"log_id":151434111747377,"error_msg":"missing parameters","error_code":282003}

代码如下：

public static void main(String[] args) {
// 通用识别url
// String otherHost = "https://aip.baidubce.com/rest/2.0/ocr/v1/general";
String otherHost = "https://aip.baidubce.com/rest/2.0/solution/v1/iocr/recognise";
// 本地图片路径
String filePath = "C:\\Users\\53606\\Desktop\\22222.jpg";
try {
byte[] imgData = FileUtil.readFileByBytes(filePath);
String imgStr = Base64Util.encode(imgData);
// String params = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(imgStr, "UTF-8")+"&templateSign=21231";
String params = URLEncoder.encode("image", "UTF-8") + "=" + URLEncoder.encode(imgStr, "UTF-8") +
"&templateSign=61928e152f24df998b61865ebde6f7fa";
/**
* 线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
*/
String accessToken = AuthService.getAuth();
String result = HttpUtil.post(otherHost, accessToken, params);
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}