react本机android:TypeError:网络请求失败_Android_React Native

react本机android:TypeError:网络请求失败

android react-native

react本机android:TypeError:网络请求失败,android,react-native,Android,React Native,我正在使用fetch命令，运行在Android模拟器上。当我将它与端口“127.0.0.1”一起使用时，无论我执行的是哪种类型的请求，我都会遇到这个错误然后我将其更改为，GET requests通常可以正常工作，但我正在尝试发出POST请求并得到以下错误： TypeError: Network request failed 我的代码： const url = 'http://10.0.2.2:143' const payload = {

我正在使用fetch命令，运行在Android模拟器上。当我将它与端口“127.0.0.1”一起使用时，无论我执行的是哪种类型的请求，我都会遇到这个错误

然后我将其更改为，GET requests通常可以正常工作，但我正在尝试发出POST请求并得到以下错误：

TypeError: Network request failed

我的代码：

const url = 'http://10.0.2.2:143'


            const payload = {
                method,
                headers: {
                    Accept: 'application/json',
                    'Content-Type': 'application/json',
                    ['x-access-token']: `Bearer ${token}`,
                },
                body,
            }

            const response = await fetch(url, payload)

在iOS上，一切正常，所以我认为这段代码没有问题。我可以试着让它在Android上工作吗

请求甚至没有到达服务器

如果您使用的是android 9或更高版本，您应该使用https发出请求，http存在安全问题

如果您使用的是SDK 9，请尝试使用https，如果它仍然不起作用，然后您需要在Android/app/src/java/main应用程序中添加一些内容：

@Override
public void onCreate() {
  super.onCreate();
  SoLoader.init(this, /* native exopackage */ false);
  //  add below code
  OkHttpClientProvider.setOkHttpClientFactory(new CustomClientFactory());
}

然后编写另一个类：

import com.facebook.react.modules.network.OkHttpClientFactory;
import com.facebook.react.modules.network.OkHttpClientFactory;
import com.facebook.react.modules.network.OkHttpClientProvider;
import com.facebook.react.modules.network.ReactCookieJarContainer;

import java.security.cert.CertificateException;
import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.TimeUnit;


import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import okhttp3.CipherSuite;
import okhttp3.ConnectionSpec;
import okhttp3.OkHttpClient;
import okhttp3.TlsVersion;

import static android.content.ContentValues.TAG;

class CustomClientFactory implements OkHttpClientFactory {
  private static final String TAG = "OkHttpClientFactory";
  @Override
  public OkHttpClient createNewNetworkModuleClient() {
    try {
        // Create a trust manager that does not validate certificate chains
        final TrustManager[] trustAllCerts = new TrustManager[]{
                new X509TrustManager() {
                    @Override
                    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                        return new java.security.cert.X509Certificate[]{};
                    }
                }
        };

        // Install the all-trusting trust manager
        final SSLContext sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
        // Create an ssl socket factory with our all-trusting manager
        final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();



        OkHttpClient.Builder builder = new OkHttpClient.Builder()
                .connectTimeout(0, TimeUnit.MILLISECONDS).readTimeout(0, TimeUnit.MILLISECONDS)
                .writeTimeout(0, TimeUnit.MILLISECONDS).cookieJar(new ReactCookieJarContainer());
        builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
        builder.hostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        });

        OkHttpClient okHttpClient = builder.build();
        return okHttpClient;
    } catch (Exception e) {
        Log.e(TAG, e.getMessage());
        throw new RuntimeException(e);
    }
}

}

如果您使用的是SDK 9，请尝试使用https，如果它仍然不起作用，则需要在Android/app/src/java/main应用程序中添加一些内容：

@Override
public void onCreate() {
  super.onCreate();
  SoLoader.init(this, /* native exopackage */ false);
  //  add below code
  OkHttpClientProvider.setOkHttpClientFactory(new CustomClientFactory());
}

然后编写另一个类：

import com.facebook.react.modules.network.OkHttpClientFactory;
import com.facebook.react.modules.network.OkHttpClientFactory;
import com.facebook.react.modules.network.OkHttpClientProvider;
import com.facebook.react.modules.network.ReactCookieJarContainer;

import java.security.cert.CertificateException;
import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.TimeUnit;


import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import okhttp3.CipherSuite;
import okhttp3.ConnectionSpec;
import okhttp3.OkHttpClient;
import okhttp3.TlsVersion;

import static android.content.ContentValues.TAG;

class CustomClientFactory implements OkHttpClientFactory {
  private static final String TAG = "OkHttpClientFactory";
  @Override
  public OkHttpClient createNewNetworkModuleClient() {
    try {
        // Create a trust manager that does not validate certificate chains
        final TrustManager[] trustAllCerts = new TrustManager[]{
                new X509TrustManager() {
                    @Override
                    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                        return new java.security.cert.X509Certificate[]{};
                    }
                }
        };

        // Install the all-trusting trust manager
        final SSLContext sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
        // Create an ssl socket factory with our all-trusting manager
        final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();



        OkHttpClient.Builder builder = new OkHttpClient.Builder()
                .connectTimeout(0, TimeUnit.MILLISECONDS).readTimeout(0, TimeUnit.MILLISECONDS)
                .writeTimeout(0, TimeUnit.MILLISECONDS).cookieJar(new ReactCookieJarContainer());
        builder.sslSocketFactory(sslSocketFactory, (X509TrustManager) trustAllCerts[0]);
        builder.hostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        });

        OkHttpClient okHttpClient = builder.build();
        return okHttpClient;
    } catch (Exception e) {
        Log.e(TAG, e.getMessage());
        throw new RuntimeException(e);
    }
}

}

很抱歉，我忘了提到我尝试使用https，但它根本不起作用（所有类型的请求都失败）哦，检查另一个URL地址我很抱歉，我忘了提到我尝试使用https，但它根本不起作用（所有类型的请求都失败）哦，检查另一个URL地址