KIS정보통신 POSPORTAL

4.3. KIS 모듈 4.3.2. FAQ 4.3.2.8. Flutter에서 한글 오류깨져요

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4.3.2.8. Flutter에서 한글 오류깨져요

<p>windows 환경에서 Flutter 와 dll 를 지원 해 주고 있습니다.</p><h4>한글 깨짐 현상 </h4><p><img src="/download/manual/getImage/2258" alt="image.png" contenteditable="false"><br></p><h4>1.  패키지 설치 </h4><p>pubspec.yaml 에 다음과 같이 js 패키지를 추가합니다.</p><div data-language="text" class="toastui-editor-ww-code-block-highlighting"><pre><code>dependencies:
  flutter:
    sdk: flutter
  ffi: ^2.0.1 
  charset_converter: ^2.0.1
  cupertino_icons: ^1.0.6
  intl: ^0.18.0
 
dev_dependencies:
  flutter_test:
    sdk: flutter
  ffi: ^2.0.1 
  charset_converter: ^2.0.1
  flutter_lints: ^3.0.0
  intl: ^0.18.0</code></pre></div><p>추가하고 패키지를 설치합니다.</p><p><br></p><p>$flutter pub add charset_converter</p><p><br></p><p>$flutter pub get </p><h4>2. dll 연결선언  </h4><div data-language="text" class="toastui-editor-ww-code-block-highlighting"><pre><code>import 'dart:convert';
import 'dart:ffi';
import 'dart:io';
import 'package:ffi/ffi.dart'; 
import 'dart:typed_data';
import 'package:charset_converter/charset_converter.dart';

// DLL 파일 로드
final DynamicLibrary PosPayLibrary = DynamicLibrary.open('PayDll_x64.dll');

typedef CEasyPay = Int32 Function(
    Pointer&lt;Utf8&gt; sIp, Int32 iPort, 
    Pointer&lt;Utf8&gt; sGd, 
    Pointer&lt;Utf8&gt; sSend, Int32 iSendLn, 
    Pointer&lt;Utf8&gt; sSignGubun,
    Pointer&lt;Utf8&gt; sSignPath, Int32 iSignPathLn,
    Pointer&lt;Utf8&gt; sRecv);

typedef DartEasyPay = int Function(
    Pointer&lt;Utf8&gt; sIp, int iPort, 
    Pointer&lt;Utf8&gt; sGd, 
    Pointer&lt;Utf8&gt; sSend, int iSendLn, 
    Pointer&lt;Utf8&gt; sSGubun,
    Pointer&lt;Utf8&gt; sPath, int iPathLn,
    Pointer&lt;Utf8&gt; sRecv);

final EasyPay = PosPayLibrary
    .lookupFunction&lt;CEasyPay, DartEasyPay&gt;('EasyPay');

<br></code></pre></div><h4>3. main.dart 추가 </h4><div data-language="text" class="toastui-editor-ww-code-block-highlighting"><pre><code>//Dll 호출
String ip, gd, send, sGubun, sPath;
Pointer&lt;Utf8&gt; sIp = ip.toNativeUtf8();
Pointer&lt;Utf8&gt; sGd = gd.toNativeUtf8();
Pointer&lt;Utf8&gt; sSend = send.toNativeUtf8();
Pointer&lt;Utf8&gt; sGubun = sGubun.toNativeUtf8();
Pointer&lt;Utf8&gt; sPath = sPath.toNativeUtf8();
Pointer&lt;Uint8&gt; sRecv = calloc&lt;Uint8&gt;(1024);

int result = EasyPay(sIp, port, sGd, sSend, send.length, sSGubun, 
                     sPath, sPath.length, sRecv.cast&lt;Utf8&gt;());</code></pre></div><h4>4.응답데이터 한글 처리 </h4><div data-language="text" class="toastui-editor-ww-code-block-highlighting"><pre><code>Future&lt;String&gt; extractString(int length) async {
  if (offset + length &gt; recvData.length) {
    print("Error: Buffer Overflow Detected");
    return "";
  }

Uint8List bytes = recvData.sublist(offset, offset + length);
  offset += length;

String result = await CharsetConverter.decode("euc-kr", bytes);
  return result.trim();
}</code></pre></div><h4>5. 사용 </h4><div data-language="text" class="toastui-editor-ww-code-block-highlighting"><pre><code>// run
flutter run -d windows
Launching lib\main.dart on Windows in debug mode...
Building Windows application...                                     8.6s
？ Built build\windows\x64\runner\Debug\my_flutter_app.exe
Syncing files to device Windows...                                  54ms

Flutter run key commands.
r Hot reload. ？？？？？？
R Hot restart.
h List all available interactive commands.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).

A Dart VM Service on Windows is available at: http://127.0.0.1:53106/JNRgyWRPPeI=/</code></pre></div><p>정상적으로 한글 처리가 되었습니다.</p><p><img src="/download/manual/getImage/2259" alt="image.png" contenteditable="false"><br></p><p>참고&gt;</p><p><br></p><p>jsonDecode(response.body);</p><p><br></p><p>jsonDecode(utf8.decode(response.bodyBytes));</p>

4.3.2.7. 프로세스 목록에는 보이지만 Deamon이 정상적으로 작동하지 않는 경우

4.3.2.9. Flutter에서 DLL 연결이 안돼요

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