对于android，在AndroidManifest.xml的应用程序标签中添加android:networkSecurityConfig="@xml/network_security_config"，如下所示:

    <?xml version="1.0" encoding="utf-8"?>
    <manifest ... >
        <application android:networkSecurityConfig="@xml/network_security_config"
                        ... >
            ...
        </application>
    </manifest>

Network_security_config.xml文件内容:

<?xml version='1.0' encoding='utf-8'?>
<network-security-config>
<debug-overrides>
    <trust-anchors>
        <!-- Trust user added CAs while debuggable only -->
        <certificates src="user" />
    </trust-anchors>
</debug-overrides>

<!-- let application to use http request -->
<base-config cleartextTrafficPermitted="true" />
</network-security-config>

如果你在REST api中使用docker，我的一个工作案例是将主机名:http://demo.test/api替换为机器ip地址:http://x.x.x.x/api。你可以通过检查你的无线网络的ipv4来获取IP。你的手机也应该有wifi。

只是你有Fetch....的变化

fetch('http://facebook.github.io/react-native/movies.json')
    .then((response) => response.json())
    .then((responseJson) => {
        /*return responseJson.movies; */
        alert("result:"+JSON.stringify(responseJson))
        this.setState({
            dataSource:this.state.dataSource.cloneWithRows(responseJson)
        })
     }).catch((error) => {
         console.error(error);
     });

如果你使用localhost，只需更改它:

来自:http://localhost: 3030 : http://10.0.2.2:3030

不建议允许http的所有域。 只对必要的域进行例外处理。

来源:在iOS 9和OSX 10.11中配置应用程序传输安全例外

将以下内容添加到信息中。你的应用的Plist文件:

<key>NSAppTransportSecurity</key>
<dict>
  <key>NSExceptionDomains</key>
  <dict>
    <key>yourserver.com</key>
    <dict>
      <!--Include to allow subdomains-->
      <key>NSIncludesSubdomains</key>
      <true/>
      <!--Include to allow HTTP requests-->
      <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
      <true/>
      <!--Include to specify minimum TLS version-->
      <key>NSTemporaryExceptionMinimumTLSVersion</key>
      <string>TLSv1.1</string>
    </dict>
  </dict>
</dict>

修复TypeError:在Android调试版本中将文件上传到http而不是https时网络请求失败

在react-native 0.63.2(我正在测试)或更高版本中，如果只是使用fetch将文件上传到http(而不是https)服务器，将会遇到TypeError:网络请求失败。

在这里，我使用axios@0.27.2作为运行在Android手机上的客户端，成功地将文件上传到react-native-file-server作为运行在另一台Android手机上的服务器。

客户端需要编辑JAVA和JS代码，服务器不需要编辑JAVA代码。

在调试构建中，必须注释掉这个文件android/app/src/debug/java/com/YOUR_PACKAGE_NAME/ReactNativeFlipper.java中的43行

38      NetworkFlipperPlugin networkFlipperPlugin = new NetworkFlipperPlugin();
39      NetworkingModule.setCustomClientBuilder(
40          new NetworkingModule.CustomClientBuilder() {
41            @Override
42            public void apply(OkHttpClient.Builder builder) {
43      //        builder.addNetworkInterceptor(new FlipperOkhttpInterceptor(networkFlipperPlugin));
44            }
45          });
46      client.addPlugin(networkFlipperPlugin);

也许还需要添加android:usesCleartextTraffic="true"下的<应用程序的android/app/src/main/AndroidManifest.xml，在我的测试，这是不必要的调试和发布构建。

  onFileSelected = async (file) => {
    // API ref to the server side BE code `addWebServerFilter("/api/uploadtodir", new WebServerFilter()`
    // https://github.com/flyskywhy/react-native-file-server/blob/1034a33dd6d8b0999705927ad78368ca1a639add/android/src/main/java/webserver/WebServer.java#L356
    // could not be 'localhost' but IP address
    const serverUploadApi = 'http://192.168.1.123:8080/api/uploadtodir';

    // the folder on server where file will be uploaded to, could be e.g. '/storage/emulated/0/Download'
    const serverFolder = '/storage/emulated/0/FileServerUpload';

    const fileToUpload = {
      // if want to upload and rename, it can be `name: 'foo.bar'`, but can not be 'foo'
      // only if your server upload code support file name without type, on our server
      // https://github.com/flyskywhy/react-native-file-server/blob/1034a33dd6d8b0999705927ad78368ca1a639add/android/src/main/java/webserver/WebServer.java#L372
      // will cause java.lang.StringIndexOutOfBoundsException in substring()
      name: file.name,

      // type is necessary in Android, it can be 'image/jpeg' or 'foo/bar', but can not be
      // 'foo', 'foo/', '/foo' or undefined, otherwise will cause `[AxiosError: Network Error]`
      type: 'a/b',

      uri: Platform.OS === 'android' ? file.uri : file.uri.replace('file://', ''),
    };

    const form = new FormData();
    form.append('path', serverFolder);
    form.append('uploadfile', fileToUpload);

    // ref to the server side FE code `this.axios.post("/api/uploadtodir", parms, config)`
    // https://github.com/flyskywhy/react-native-file-server/blob/1034a33dd6d8b0999705927ad78368ca1a639add/fileserverwebdoc/src/views/Manage.vue#L411
    let res = await axios.post(serverUploadApi, form, {
      headers: {
        'Content-Type': 'multipart/form-data',
      },
      onUploadProgress: function (progressEvent) {
        console.warn(progressEvent);
      },
    });

    // ref to the server side BE code `return newFixedLengthResponse("Suss");`
    // https://github.com/flyskywhy/react-native-file-server/blob/1034a33dd6d8b0999705927ad78368ca1a639add/android/src/main/java/webserver/WebServer.java#L380
    if (res.data === 'Suss') {
      console.warn('Upload Successful');
    } else if (res.data === 'fail') {
      console.warn('Upload Failed');
    }
  };