Question

我正在制作一个应用程序，并且我已经在本地运行服务器。我可以向导航员发送URL：

Request URL: http://localhost:4444/categorie?page_size=15&page=1
Request Method: GET
Status Code: 200 OK
Remote Address: 127.0.0.1:4444
Referrer Policy: no-referrer-when-downgrade

预览：

{
    "count": 4,
    "next": null,
    "previous": null,
    "results": [
        {
            "uid": "_b656062d3754",
            "name": "Pinga"
        },
        {
            "uid": "_0c644473c244",
            "name": "Cerveja"
        },
        {
            "uid": "_75df557ccbaa",
            "name": "Vinhos"
        },
        {
            "uid": "_8e32ce3baded",
            "name": "Refrigerantes"
        }
    ]
}

但是当我尝试时，请求永远不会响应：

getCategories() async {

  String url = 'http://localhost:4444/categorie?page_size=15&page=1';

  var response = await http.get(url);

  if (response.statusCode == 200) {
    // If the call to the server was successful, parse the JSON
    return response.body;
  } else {
    // If that call was not successful, throw an error.
    throw Exception('Failed to load post');
  }
}

我正在使用Windows10在Django中运行服务器。我的拍打应用程序位于Android Studio中，使用Virtual Machine作为设备。我试图将IP更改为127.0.0.1和10.0.0.1，但仍然无法正常工作。我是否已更改Django的主机或在我的flutter或VirutalBox内部启用了任何配置？

对其他站点的请求运行良好。问题出在当地。

我的依赖项：

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  http: any

dev_dependencies:
  flutter_test:
    sdk: flutter

Answer 1

您的PC上的本地主机与Android模拟器上的本地主机不同。要从Android模拟器访问PC的本地主机，您需要指向10.0.2.2。

这意味着您需要将代码更改为：

String url = 'http://10.0.2.2:4444/categorie?page_size=15&page=1';

Answer 2

在"C:\VS2019\VC\Tools\MSVC\14.24.28314\bin\Hostx64\x64\dumpbin.exe" /DEPENDENTS ImageComprehensionCOM.dll Microsoft (R) COFF/PE Dumper Version 14.24.28314.0 Copyright (C) Microsoft Corporation. All rights reserved. Dump of file ImageTestCOM.dll File Type: DLL Image has the following dependencies: ippi-8.0.dll ipps-8.0.dll ippcv-8.0.dll opencv_core2410.dll opencv_imgproc2410.dll opencv_highgui2410.dll mfc140.dll KERNEL32.dll USER32.dll ADVAPI32.dll ole32.dll OLEAUT32.dll MSVCP140.dll VCRUNTIME140.dll VCRUNTIME140_1.dll api-ms-win-crt-runtime-l1-1-0.dll api-ms-win-crt-string-l1-1-0.dll api-ms-win-crt-stdio-l1-1-0.dll api-ms-win-crt-filesystem-l1-1-0.dll api-ms-win-crt-convert-l1-1-0.dll api-ms-win-crt-math-l1-1-0.dll api-ms-win-crt-heap-l1-1-0.dll api-ms-win-crt-utility-l1-1-0.dll api-ms-win-crt-time-l1-1-0.dll api-ms-win-crt-multibyte-l1-1-0.dll Summary 25000 .data文件中的依赖关系下使用它：

LoadLibrary

将此方法用于Http请求

pubspec

模型类：

http: ^0.12.0+2

如何使本地http请求扑朔迷离？

2 个答案: