java sdk调用pdserving c++部署的ocr4模型报错

[wangzhedong]

请提供下述完整信息以便快速定位问题/Please provide the following information to quickly locate the problem
使用python3.6 ocr_cpp_client.py ../v4/ppocr_det_v4_client ../v4/ppocr_rec_v4_client调用正常，说明服务端是没问题的

• 系统环境/System Environment：ubuntu 16

• 版本号/Version：Paddle： PaddleOCR：2.7 问题相关组件/Related components：pdserving 0.9.0

• 运行指令/Command Code：这是示例代码public static void test(String base64) {

    // 创建PaddleServing客户端实例
    Client client = new Client();
  
    // 加载客户端配置（可选）
    //client.loadClientConfig("your_client_config.yml");
  
    // 连接到PaddleServing服务器
    client.connect("192.168.199.139:8181");
  
    HashMap<String, INDArray> feed = new HashMap<>();
  
    INDArray npdata = Nd4j.create(base64);
  

// INDArray npdata = Nd4j.createFromArray(base64);

    feed.put("x", npdata);
    Iterable<String> fetch = new ArrayList<>();
    Map<String, INDArray> result = client.predict(feed, fetch);
    System.out.println(result);


}

• 完整报错/Complete Error Message：
• Get Client config failed: io.grpc.StatusRuntimeException: UNIMPLEMENTED: [172.17.0.3:8181][E1002]Fail to find method on `/baidu.paddle_serving.multi_lang.MultiLangGeneralModelService/GetClientConfig'
  2023-12-06 17:42:03.809 [main] INFO o.n.l.f.Nd4jBackend - [load,203] - Loaded [CpuBackend] backend
  2023-12-06 17:42:04.750 [main] INFO o.n.n.NativeOpsHolder - [,109] - Number of threads used for linear algebra: 1
  2023-12-06 17:42:04.799 [main] INFO o.n.n.Nd4jBlas - [,57] - Number of threads used for OpenMP BLAS: 10
  2023-12-06 17:42:04.828 [main] INFO o.n.l.a.o.e.DefaultOpExecutioner - [printEnvironmentInformation,674] - Backend used: [CPU]; OS: [Mac OS X]
  2023-12-06 17:42:04.828 [main] INFO o.n.l.a.o.e.DefaultOpExecutioner - [printEnvironmentInformation,675] - Cores: [10]; Memory: [8.0GB];
  2023-12-06 17:42:04.829 [main] INFO o.n.l.a.o.e.DefaultOpExecutioner - [printEnvironmentInformation,676] - Blas vendor: [OPENBLAS]
  Exception in thread "main" java.lang.NullPointerException
  at io.paddle.serving.client.Client._packInferenceRequest(Client.java:212)
  at io.paddle.serving.client.Client.predict(Client.java:480)
  at io.paddle.serving.client.Client.predict(Client.java:388)
  at io.paddle.serving.client.Client.predict(Client.java:337)
  at cn.orins.coin.api.WordImageExtractor.test(WordImageExtractor.java:91)
  at cn.orins.coin.api.WordImageExtractor.extractImagesFromWord(WordImageExtractor.java:153)
  at cn.orins.coin.api.WordImageExtractor.main(WordImageExtractor.java:38)

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