使用C++ SDK - String作为节点标识符从OPCUA读取自定义节点

#include <iostream>
#include "open62541.h"

int main() {
    UA_Client *client = UA_Client_new();
    UA_ClientConfig_setDefault(UA_Client_getConfig(client));

    UA_StatusCode status = UA_Client_connect(client, "opc.tcp://localhost:4840");
    if (status != UA_STATUSCODE_GOOD) {
        UA_Client_delete(client);
        return status;
    }

    UA_NodeId nodeId = UA_NODEID_STRING(1, "CustomNode");
    UA_Variant value;
    UA_Variant_init(&value);

    status = UA_Client_readValueAttribute(client, nodeId, &value);
    if (status == UA_STATUSCODE_GOOD && UA_Variant_hasScalarType(&value, &UA_TYPES[UA_TYPES_STRING])) {
        UA_String *stringValue = (UA_String*)value.data;
        std::cout << "Custom Node Value: " << std::string((char*)stringValue->data, stringValue->length) << std::endl;
    }

    UA_Variant_deleteMembers(&value);
    UA_Client_disconnect(client);
    UA_Client_delete(client);

    return 0;
}