帶有顫振的傳送帶 - 在本地運行 .net Web 應用程序時出現握手錯誤

Question

我正在使用Conveyor （一個 Visual Studio 2019 擴展）讓我的 ASP.NET Core 可用於 android 模擬器。 到目前為止，這一直很有效。 我已經開發了 Xamarin 應用程序、UWP 應用程序，並且之前將它用於本機 Android 應用程序，它可以正常工作。 但是在當前的 flutter 應用程序中，這不起作用。

Conveyor 確實提供了在 android 設備上安裝證書的教程： https : //conveyor.cloud/Help/SSL

按照這些說明操作后，我可以正常加載網頁：

這也已在 Windows（運行 Web 應用程序的機器）上完成，但這是由 Conveyor 擴展自動完成的，但是：

我運行此 Dart 代碼來調用 API：

未來登錄（字符串電子郵件，字符串密碼）異步{

var response = await http
    .post("$_url/login", body: {email: email, password: password});//_url= https://192.168.0.148:45455/api

if (response.statusCode == 200) {
  var token = LoginResult.fromJson(json.decode(response.body));
  _authToken = token.token;
  return token.token;
}
throw Exception(
    "Login failed: ${response.statusCode} body: ${response.body}");

}

發生的異常：

HandshakeException (HandshakeException: Handshake error in client (OS Error: CERTIFICATE_VERIFY_FAILED: cannot get local issuer certificate(handshake.cc:354)))

請注意354數字與我之前在其他地方看到的錯誤不同。 我真的找不到這些異常的具體錯誤編號。

flutter doctor似乎運行良好，不得不采取額外的步驟來解決許可證問題：

C:\>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.8, on Microsoft Windows [Version 10.0.18363.657], locale nl-NL)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[√] Android Studio (version 3.6)
[√] VS Code, 64-bit edition (version 1.42.1)
[√] Connected device (1 available)

• No issues found!

已經發現相關問題：

• https://stackoverflow.com/a/54359013/2901207這不僅為簡單的發布請求添加了更多代碼，我無法接受。 我想堅持使用http.post()並避免任何代碼解決方法。 我不認為這是一個“解決方案”。
• 我已經查看了所有相關的 github 問題，似乎沒有一個很好的解決方案。 大多數問題都在深入研究自簽名證書，這些證書似乎與已經托管的服務器而不是本地主機更相關。 我相信 Conveyor 應該已經解決了證書問題，但對於顫振似乎不正確。 看到的問題： #50699 、 #47262 、 #37655 、 #23045

最后一個包括使用IOClient的類似解決方案。 同樣在這里，我不認為這是解決方案。 我寧願找到一個完全避免任何代碼調整的解決方案。 所以我想重點是 Conveyor 正確調整它或正確運行 flutter 以接受來自 convoyer 的證書。

可以在flutter run --verbose的整個日志下方找到。 我看到 flutter 團隊在每個 github 問題上都要求這樣做，所以也許它可以解決任何問題。

[  +27 ms] executing: [C:\flutter\] git -c log.showSignature=false log -n 1 --pretty=format:%H
[  +70 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[        ] 0b8abb4724aa590dd0f429683339b1e045a1594d
[        ] executing: [C:\flutter\] git describe --match v*.*.* --first-parent --long --tags
[  +43 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[        ] v1.12.13+hotfix.8-0-g0b8abb472
[   +8 ms] executing: [C:\flutter\] git rev-parse --abbrev-ref --symbolic @{u}
[  +45 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[        ] origin/stable
[        ] executing: [C:\flutter\] git ls-remote --get-url origin
[  +40 ms] Exit code 0 from: git ls-remote --get-url origin
[        ] https://github.com/flutter/flutter.git
[  +78 ms] executing: [C:\flutter\] git rev-parse --abbrev-ref HEAD
[  +43 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] stable
[ +100 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe devices -l
[  +25 ms] Exit code 0 from: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe devices -l
[        ] List of devices attached
           emulator-5554          device product:sdk_gphone_x86 model:Android_SDK_built_for_x86 device:generic_x86
           transport_id:1
[  +17 ms] C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell getprop
[  +54 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[   +6 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +3 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +109 ms] Found plugin url_launcher at C:\flutter\.pub-cache\hosted\pub.dartlang.org\url_launcher-4.2.0+3\
[  +82 ms] Found plugin url_launcher at C:\flutter\.pub-cache\hosted\pub.dartlang.org\url_launcher-4.2.0+3\
[  +40 ms] Generating
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\android\app\src\main\java\io\flutter\plugins\GeneratedPluginReg
istrant.java
[  +46 ms] ro.hardware = ranchu
[  +32 ms] Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider
enabling
           software rendering with "--enable-software-rendering".
[  +17 ms] Launching lib\main.dart on Android SDK built for x86 in debug mode...
[   +7 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\build-tools\29.0.3\aapt dump xmltree
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\build\app\outputs\apk\app.apk AndroidManifest.xml
[  +17 ms] Exit code 0 from: C:\Users\USER\AppData\Local\Android\sdk\build-tools\29.0.3\aapt dump xmltree
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\build\app\outputs\apk\app.apk AndroidManifest.xml
[   +2 ms] N: android=http://schemas.android.com/apk/res/android
             E: manifest (line=2)
               A: android:versionCode(0x0101021b)=(type 0x10)0x1
               A: android:versionName(0x0101021c)="1.0.0" (Raw: "1.0.0")
               A: android:compileSdkVersion(0x01010572)=(type 0x10)0x1c
               A: android:compileSdkVersionCodename(0x01010573)="9" (Raw: "9")
               A: package="com.example.p2portfolio" (Raw: "com.example.p2portfolio")
               A: platformBuildVersionCode=(type 0x10)0x1c
               A: platformBuildVersionName=(type 0x10)0x9
               E: uses-sdk (line=7)
                 A: android:minSdkVersion(0x0101020c)=(type 0x10)0x10
                 A: android:targetSdkVersion(0x01010270)=(type 0x10)0x1c
               E: uses-permission (line=14)
                 A: android:name(0x01010003)="android.permission.INTERNET" (Raw: "android.permission.INTERNET")
               E: application (line=22)
                 A: android:label(0x01010001)="p2portfolio" (Raw: "p2portfolio")
                 A: android:icon(0x01010002)=@0x7f080000
                 A: android:name(0x01010003)="io.flutter.app.FlutterApplication" (Raw:
                 "io.flutter.app.FlutterApplication")
                 A: android:debuggable(0x0101000f)=(type 0x12)0xffffffff
                 A: android:appComponentFactory(0x0101057a)="androidx.core.app.CoreComponentFactory" (Raw:
                 "androidx.core.app.CoreComponentFactory")
                 E: activity (line=28)
                   A: android:theme(0x01010000)=@0x7f0a0000
                   A: android:name(0x01010003)="com.example.p2portfolio.MainActivity" (Raw:
                   "com.example.p2portfolio.MainActivity")
                   A: android:launchMode(0x0101001d)=(type 0x10)0x1
                   A: android:configChanges(0x0101001f)=(type 0x11)0x40003fb4
                   A: android:windowSoftInputMode(0x0101022b)=(type 0x11)0x10
                   A: android:hardwareAccelerated(0x010102d3)=(type 0x12)0xffffffff
                   E: intent-filter (line=35)
                     E: action (line=36)
                       A: android:name(0x01010003)="android.intent.action.MAIN" (Raw: "android.intent.action.MAIN")
                     E: category (line=38)
                       A: android:name(0x01010003)="android.intent.category.LAUNCHER" (Raw:
                       "android.intent.category.LAUNCHER")
                 E: meta-data (line=45)
                   A: android:name(0x01010003)="flutterEmbedding" (Raw: "flutterEmbedding")
                   A: android:value(0x01010024)=(type 0x10)0x2
                 E: activity (line=49)
                   A: android:theme(0x01010000)=@0x01030007
                   A: android:name(0x01010003)="io.flutter.plugins.urllauncher.UrlLauncherPlugin$WebViewActivity" (Raw:
                   "io.flutter.plugins.urllauncher.UrlLauncherPlugin$WebViewActivity")
                   A: android:exported(0x01010010)=(type 0x12)0x0
[   +8 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell -x logcat -v
time -t 1
[  +48 ms] Exit code 0 from: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell -x
logcat -v time -t 1
[   +2 ms] --------- beginning of main
           03-08 12:13:03.586 E/GnssHAL_GnssInterface( 1764): gnssSvStatusCb: b: input svInfo.flags is 8
[   +8 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe version
[   +1 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 logcat -v time -T
03-08 12:13:03.586
[  +44 ms] Android Debug Bridge version 1.0.41
           Version 29.0.6-6198805
           Installed as C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe
[   +4 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe start-server
[  +63 ms] Building APK
[  +20 ms] Running Gradle task 'assembleDebug'...
[   +3 ms] gradle.properties already sets `android.enableR8`
[   +5 ms] Using gradle from C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\android\gradlew.bat.
[   +7 ms] executing: C:\Program Files\Android\Android Studio\jre\bin\java -version
[ +101 ms] Exit code 0 from: C:\Program Files\Android\Android Studio\jre\bin\java -version
[   +4 ms] openjdk version "1.8.0_212-release"
           OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
           OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode)
[   +4 ms] executing: [C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\android\]
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\android\gradlew.bat -Pverbose=true
-Ptarget=C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\lib\main.dart -Ptrack-widget-creation=true
-Pfilesystem-scheme=org-dartlang-root -Ptarget-platform=android-x86 assembleDebug
[ +592 ms] Welcome to Gradle 5.6.2!
[   +2 ms] Here are the highlights of this release:
[   +1 ms]  - Incremental Groovy compilation
[   +3 ms]  - Groovy compile avoidance
[   +1 ms]  - Test fixtures for Java projects
[        ]  - Manage plugin versions via settings script
[   +1 ms] For more details see https://docs.gradle.org/5.6.2/release-notes.html
[+1184 ms] > Task :app:compileFlutterBuildDebug UP-TO-DATE
[   +3 ms] > Task :app:packLibsflutterBuildDebug UP-TO-DATE
[   +1 ms] > Task :app:preBuild UP-TO-DATE
[   +3 ms] > Task :app:preDebugBuild UP-TO-DATE
[   +1 ms] > Task :url_launcher:preBuild UP-TO-DATE
[   +3 ms] > Task :url_launcher:preDebugBuild UP-TO-DATE
[   +1 ms] > Task :url_launcher:compileDebugAidl NO-SOURCE
[   +3 ms] > Task :app:compileDebugAidl NO-SOURCE
[   +1 ms] > Task :url_launcher:packageDebugRenderscript NO-SOURCE
[   +4 ms] > Task :app:compileDebugRenderscript NO-SOURCE
[   +1 ms] > Task :app:checkDebugManifest UP-TO-DATE
[   +2 ms] > Task :app:generateDebugBuildConfig UP-TO-DATE
[   +1 ms] > Task :app:cleanMergeDebugAssets
[   +1 ms] > Task :app:mergeDebugShaders UP-TO-DATE
[   +2 ms] > Task :app:compileDebugShaders UP-TO-DATE
[   +1 ms] > Task :app:generateDebugAssets UP-TO-DATE
[   +3 ms] > Task :url_launcher:mergeDebugShaders UP-TO-DATE
[  +56 ms] > Task :url_launcher:compileDebugShaders UP-TO-DATE
[   +2 ms] > Task :url_launcher:generateDebugAssets UP-TO-DATE
[   +3 ms] > Task :url_launcher:packageDebugAssets UP-TO-DATE
[   +1 ms] > Task :app:mergeDebugAssets
[ +292 ms] > Task :app:copyFlutterAssetsDebug
[   +2 ms] > Task :app:mainApkListPersistenceDebug UP-TO-DATE
[   +3 ms] > Task :app:generateDebugResValues UP-TO-DATE
[   +1 ms] > Task :app:generateDebugResources UP-TO-DATE
[   +1 ms] > Task :url_launcher:generateDebugResValues UP-TO-DATE
[   +2 ms] > Task :url_launcher:compileDebugRenderscript NO-SOURCE
[   +1 ms] > Task :url_launcher:generateDebugResources UP-TO-DATE
[   +2 ms] > Task :url_launcher:packageDebugResources UP-TO-DATE
[        ] > Task :app:mergeDebugResources UP-TO-DATE
[   +1 ms] > Task :app:createDebugCompatibleScreenManifests UP-TO-DATE
[        ] > Task :url_launcher:checkDebugManifest UP-TO-DATE
[  +81 ms] > Task :url_launcher:processDebugManifest UP-TO-DATE
[   +3 ms] > Task :app:processDebugManifest UP-TO-DATE
[   +3 ms] > Task :url_launcher:parseDebugLibraryResources UP-TO-DATE
[   +1 ms] > Task :url_launcher:generateDebugRFile UP-TO-DATE
[   +2 ms] > Task :app:processDebugResources UP-TO-DATE
[   +3 ms] > Task :url_launcher:generateDebugBuildConfig UP-TO-DATE
[   +2 ms] > Task :url_launcher:javaPreCompileDebug UP-TO-DATE
[   +1 ms] > Task :url_launcher:compileDebugJavaWithJavac UP-TO-DATE
[   +1 ms] > Task :url_launcher:bundleLibCompileDebug UP-TO-DATE
[  +86 ms] > Task :app:compileDebugKotlin UP-TO-DATE
[   +2 ms] > Task :app:javaPreCompileDebug UP-TO-DATE
[   +3 ms] > Task :app:compileDebugJavaWithJavac UP-TO-DATE
[   +1 ms] > Task :app:compileDebugSources UP-TO-DATE
[   +1 ms] > Task :app:processDebugJavaRes NO-SOURCE
[   +3 ms] > Task :url_launcher:processDebugJavaRes NO-SOURCE
[   +1 ms] > Task :url_launcher:bundleLibResDebug UP-TO-DATE
[   +3 ms] > Task :app:mergeDebugJavaResource UP-TO-DATE
[   +6 ms] > Task :url_launcher:bundleLibRuntimeDebug UP-TO-DATE
[   +4 ms] > Task :url_launcher:createFullJarDebug UP-TO-DATE
[   +1 ms] > Task :app:checkDebugDuplicateClasses UP-TO-DATE
[  +64 ms] > Task :app:desugarDebugFileDependencies UP-TO-DATE
[   +2 ms] > Task :app:mergeExtDexDebug UP-TO-DATE
[   +3 ms] > Task :app:transformClassesWithDexBuilderForDebug UP-TO-DATE
[   +1 ms] > Task :app:mergeDexDebug UP-TO-DATE
[   +1 ms] > Task :app:validateSigningDebug UP-TO-DATE
[   +1 ms] > Task :app:signingConfigWriterDebug UP-TO-DATE
[   +3 ms] > Task :app:mergeDebugJniLibFolders UP-TO-DATE
[   +1 ms] > Task :url_launcher:mergeDebugJniLibFolders UP-TO-DATE
[   +5 ms] > Task :url_launcher:mergeDebugNativeLibs UP-TO-DATE
[   +5 ms] > Task :url_launcher:stripDebugDebugSymbols UP-TO-DATE
[   +4 ms] > Task :url_launcher:transformNativeLibsWithIntermediateJniLibsForDebug UP-TO-DATE
[  +63 ms] > Task :app:mergeDebugNativeLibs UP-TO-DATE
[   +2 ms] > Task :app:stripDebugDebugSymbols UP-TO-DATE
[   +2 ms] Compatible side by side NDK version was not found.
[   +1 ms] > Task :app:packageDebug UP-TO-DATE
[        ] > Task :app:assembleDebug UP-TO-DATE
[        ] > Task :url_launcher:extractDebugAnnotations UP-TO-DATE
[        ] > Task :url_launcher:mergeDebugGeneratedProguardFiles UP-TO-DATE
[   +2 ms] > Task :url_launcher:mergeDebugConsumerProguardFiles UP-TO-DATE
[        ] > Task :url_launcher:prepareLintJarForPublish UP-TO-DATE
[   +2 ms] > Task :url_launcher:mergeDebugJavaResource UP-TO-DATE
[   +1 ms] > Task :url_launcher:transformClassesAndResourcesWithSyncLibJarsForDebug UP-TO-DATE
[        ] > Task :url_launcher:transformNativeLibsWithSyncJniLibsForDebug UP-TO-DATE
[        ] > Task :url_launcher:bundleDebugAar UP-TO-DATE
[        ] > Task :url_launcher:compileDebugSources UP-TO-DATE
[   +2 ms] > Task :url_launcher:assembleDebug UP-TO-DATE
[        ] BUILD SUCCESSFUL in 2s
[   +2 ms] 58 actionable tasks: 3 executed, 55 up-to-date
[ +350 ms] Running Gradle task 'assembleDebug'... (completed in 3,1s)
[  +30 ms] calculateSha: LocalDirectory:
'C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\build\app\outputs\apk'/app.apk
[  +41 ms] calculateSha: reading file took 38us
[ +445 ms] calculateSha: computing sha took 443us
[   +7 ms] √ Built build\app\outputs\apk\debug\app-debug.apk.
[   +7 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\build-tools\29.0.3\aapt dump xmltree
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\build\app\outputs\apk\app.apk AndroidManifest.xml
[  +21 ms] Exit code 0 from: C:\Users\USER\AppData\Local\Android\sdk\build-tools\29.0.3\aapt dump xmltree
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\build\app\outputs\apk\app.apk AndroidManifest.xml
[   +2 ms] N: android=http://schemas.android.com/apk/res/android
             E: manifest (line=2)
               A: android:versionCode(0x0101021b)=(type 0x10)0x1
               A: android:versionName(0x0101021c)="1.0.0" (Raw: "1.0.0")
               A: android:compileSdkVersion(0x01010572)=(type 0x10)0x1c
               A: android:compileSdkVersionCodename(0x01010573)="9" (Raw: "9")
               A: package="com.example.p2portfolio" (Raw: "com.example.p2portfolio")
               A: platformBuildVersionCode=(type 0x10)0x1c
               A: platformBuildVersionName=(type 0x10)0x9
               E: uses-sdk (line=7)
                 A: android:minSdkVersion(0x0101020c)=(type 0x10)0x10
                 A: android:targetSdkVersion(0x01010270)=(type 0x10)0x1c
               E: uses-permission (line=14)
                 A: android:name(0x01010003)="android.permission.INTERNET" (Raw: "android.permission.INTERNET")
               E: application (line=22)
                 A: android:label(0x01010001)="p2portfolio" (Raw: "p2portfolio")
                 A: android:icon(0x01010002)=@0x7f080000
                 A: android:name(0x01010003)="io.flutter.app.FlutterApplication" (Raw:
                 "io.flutter.app.FlutterApplication")
                 A: android:debuggable(0x0101000f)=(type 0x12)0xffffffff
                 A: android:appComponentFactory(0x0101057a)="androidx.core.app.CoreComponentFactory" (Raw:
                 "androidx.core.app.CoreComponentFactory")
                 E: activity (line=28)
                   A: android:theme(0x01010000)=@0x7f0a0000
                   A: android:name(0x01010003)="com.example.p2portfolio.MainActivity" (Raw:
                   "com.example.p2portfolio.MainActivity")
                   A: android:launchMode(0x0101001d)=(type 0x10)0x1
                   A: android:configChanges(0x0101001f)=(type 0x11)0x40003fb4
                   A: android:windowSoftInputMode(0x0101022b)=(type 0x11)0x10
                   A: android:hardwareAccelerated(0x010102d3)=(type 0x12)0xffffffff
                   E: intent-filter (line=35)
                     E: action (line=36)
                       A: android:name(0x01010003)="android.intent.action.MAIN" (Raw: "android.intent.action.MAIN")
                     E: category (line=38)
                       A: android:name(0x01010003)="android.intent.category.LAUNCHER" (Raw:
                       "android.intent.category.LAUNCHER")
                 E: meta-data (line=45)
                   A: android:name(0x01010003)="flutterEmbedding" (Raw: "flutterEmbedding")
                   A: android:value(0x01010024)=(type 0x10)0x2
                 E: activity (line=49)
                   A: android:theme(0x01010000)=@0x01030007
                   A: android:name(0x01010003)="io.flutter.plugins.urllauncher.UrlLauncherPlugin$WebViewActivity" (Raw:
                   "io.flutter.plugins.urllauncher.UrlLauncherPlugin$WebViewActivity")
                   A: android:exported(0x01010010)=(type 0x12)0x0
[   +4 ms] Stopping app 'app.apk' on Android SDK built for x86.
[   +1 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell am
force-stop com.example.p2portfolio
[  +54 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell pm list
packages com.example.p2portfolio
[  +52 ms] package:com.example.p2portfolio
[   +4 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell cat
/data/local/tmp/sky.com.example.p2portfolio.sha1
[  +36 ms] 768e24b43bd762cc7b46297693baa55fc0695949
[   +2 ms] Latest build already installed.
[   +2 ms] Android SDK built for x86 startApp
[   +2 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 shell am start -a
android.intent.action.RUN -f 0x20000000 --ez enable-background-compilation true --ez enable-dart-profiling true --ez
enable-checked-mode true --ez verify-entry-points true com.example.p2portfolio/com.example.p2portfolio.MainActivity
[ +100 ms] Starting: Intent { act=android.intent.action.RUN flg=0x20000000 cmp=com.example.p2portfolio/.MainActivity
(has extras) }
[   +3 ms] Waiting for observatory port to be available...
[ +500 ms] D/FlutterActivity( 8233): Using the launch theme as normal theme.
[   +7 ms] D/FlutterActivityAndFragmentDelegate( 8233): Setting up FlutterEngine.
[   +1 ms] D/FlutterActivityAndFragmentDelegate( 8233): No preferred FlutterEngine was provided. Creating a new
FlutterEngine for this FlutterFragment.
[ +359 ms] D/FlutterActivityAndFragmentDelegate( 8233): Attaching FlutterEngine to the Activity that owns this Fragment.
[  +57 ms] D/FlutterView( 8233): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@23f561f
[  +27 ms] D/FlutterActivityAndFragmentDelegate( 8233): Executing Dart entrypoint: main, and sending initial route: /
[ +196 ms] Observatory URL on device: http://127.0.0.1:36511/H9d_JaoyPI4=/
[  +18 ms] executing: C:\Users\USER\AppData\Local\Android\sdk\platform-tools\adb.exe -s emulator-5554 forward tcp:0
tcp:36511
[ +128 ms] 9700
[  +15 ms] Forwarded host port 9700 to device port 36511 for Observatory
[  +78 ms] Connecting to service protocol: http://127.0.0.1:9700/H9d_JaoyPI4=/
[+1320 ms] Successfully connected to service protocol: http://127.0.0.1:9700/H9d_JaoyPI4=/
[   +4 ms] Sending to VM service: getVM({})
[   +6 ms] Result: {type: VM, name: vm, architectureBits: 32, hostCPU: Intel(R) Core(TM) i7-4720HQ CPU @ 2.60GHz,
operatingSystem: android, targetCPU: ia32, version: 2.7.0 (Fri Dec 6 16:26:51 2019 +0100) on "android_ia32",
_profilerMode: VM, _nativeZoneMemoryUsage: ...
[   +6 ms] Sending to VM service: getIsolate({isolateId: isolates/4001318716464607})
[   +4 ms] Sending to VM service: _flutter.listViews({})
[   +7 ms] Result: {type: FlutterViewList, views: [{type: FlutterView, id: _flutterView/0xf3332210, isolate: {type:
@Isolate, fixedId: true, id: isolates/4001318716464607, name: main.dart$main-4001318716464607, number:
4001318716464607}}]}
[   +6 ms] DevFS: Creating new filesystem on the device (null)
[   +2 ms] Sending to VM service: _createDevFS({fsName: P2PortfolioApp})
[  +40 ms] Result: {type: FileSystem, name: P2PortfolioApp, uri:
file:///data/user/0/com.example.p2portfolio/code_cache/P2PortfolioAppQQIXEI/P2PortfolioApp/}
[   +2 ms] DevFS: Created new filesystem on the device
(file:///data/user/0/com.example.p2portfolio/code_cache/P2PortfolioAppQQIXEI/P2PortfolioApp/)
[   +4 ms] Updating assets
[ +160 ms] Syncing files to device Android SDK built for x86...
[   +4 ms] Scanning asset files
[   +4 ms] <- reset
[   +4 ms] Compiling dart to kernel with 0 updated files
[   +9 ms] C:\flutter\bin\cache\dart-sdk\bin\dart.exe
C:\flutter\bin\cache\artifacts\engine\windows-x64\frontend_server.dart.snapshot --sdk-root
C:\flutter\bin\cache\artifacts\engine\common\flutter_patched_sdk/ --incremental --target=flutter
-Ddart.developer.causal_async_stacks=true --output-dill
C:\Users\USER\AppData\Local\Temp\flutter_tool.c68a6d6d-612d-11ea-ae76-d07e35d5bcd0\app.dill --packages
C:\Users\USER\source\repos\P2PortfolioApp\P2PortfolioApp\.packages -Ddart.vm.profile=false -Ddart.vm.product=false
--bytecode-options=source-positions,local-var-info,debugger-stops,instance-field-initializers,keep-unreachable-code,avoi
d-closure-call-instructions --enable-asserts --track-widget-creation --filesystem-scheme org-dartlang-root
[   +5 ms] D/EGL_emulation( 8233): eglMakeCurrent: 0xe7fb3240: ver 2 0 (tinfo 0xc8c55440)
[   +7 ms] <- compile package:p2portfolio/main.dart
[  +21 ms] Result: {type: Isolate, id: isolates/4001318716464607, name: main, number: 4001318716464607, _originNumber:
4001318716464607, startTime: 1583665988595, _heaps: {new: {type: HeapSpace, name: new, vmName: Scavenger, collections:
2, avgCollectionPeriodMillis...
[  +24 ms] I/Choreographer( 8233): Skipped 117 frames!  The application may be doing too much work on its main thread.
[ +224 ms] D/EGL_emulation( 8233): eglMakeCurrent: 0xdff1a240: ver 2 0 (tinfo 0xdff0f740)
[+1077 ms] W/IInputConnectionWrapper( 8233): getTextBeforeCursor on inactive InputConnection
[   +2 ms] W/IInputConnectionWrapper( 8233): getSelectedText on inactive InputConnection
[   +1 ms] W/IInputConnectionWrapper( 8233): getTextAfterCursor on inactive InputConnection
[  +19 ms] W/IInputConnectionWrapper( 8233): beginBatchEdit on inactive InputConnection
[   +2 ms] W/IInputConnectionWrapper( 8233): endBatchEdit on inactive InputConnection
[+4401 ms] Updating files
[ +148 ms] DevFS: Sync finished
[   +4 ms] Syncing files to device Android SDK built for x86... (completed in 5.961ms, longer than expected)
[   +2 ms] Synced 0.9MB.
[   +3 ms] Sending to VM service: _flutter.listViews({})
[   +4 ms] Result: {type: FlutterViewList, views: [{type: FlutterView, id: _flutterView/0xf3332210, isolate: {type:
@Isolate, fixedId: true, id: isolates/4001318716464607, name: main.dart$main-4001318716464607, number:
4001318716464607}}]}
[   +2 ms] <- accept
[   +1 ms] Connected to _flutterView/0xf3332210.
[   +3 ms] 🔥  To hot reload changes while running, press "r". To hot restart (and rebuild state), press "R".
[   +3 ms] An Observatory debugger and profiler on Android SDK built for x86 is available at:
http://127.0.0.1:9700/H9d_JaoyPI4=/
[   +4 ms] For a more detailed help message, press "h". To detach, press "d"; to quit, press "q".

Answer 1

跳過ssl認證問題的最佳方法。

class MyHttpOverrides extends HttpOverrides{
  @override
  HttpClient createHttpClient(SecurityContext context){
    return super.createHttpClient(context)
      ..badCertificateCallback = (X509Certificate cert, String host, int port)=> true;
    }
  }

void main(){
    HttpOverrides.global = new MyHttpOverrides();
    runApp(new MyApp());
}

Answer 2

你用過請求包嗎？

https://pub.dev/packages/requests

這里的例子：

var r = await Requests.get('https://expired.badssl.com/', **verify: false**);
r.raiseForStatus();