SSL证书问题msgraph sdk java

如果您在使用msgraph sdk java时遇到SSL证书问题，可以尝试以下解决方法：

方法1：信任自定义证书

import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.microsoft.graph.http.IHttpRequest;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.*;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class CustomAuthenticationProvider implements IAuthenticationProvider {
    private String clientId;
    private String clientSecret;
    private String tenantId;
    private String certificatePath;
    private String certificatePassword;

    public CustomAuthenticationProvider(String clientId, String clientSecret, String tenantId, String certificatePath, String certificatePassword) {
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.tenantId = tenantId;
        this.certificatePath = certificatePath;
        this.certificatePassword = certificatePassword;
    }

    @Override
    public void authenticateRequest(IHttpRequest request) {
        PrivateKey privateKey;
        try {
            // Load the certificate
            KeyStore keystore = KeyStore.getInstance("JKS");
            InputStream certificateInputStream = new FileInputStream(certificatePath);
            keystore.load(certificateInputStream, certificatePassword.toCharArray());

            // Get the private key from the certificate
            privateKey = (PrivateKey) keystore.getKey("alias", certificatePassword.toCharArray());
        } catch (KeyStoreException | NoSuchAlgorithmException | CertificateException | IOException | UnrecoverableKeyException e) {
            e.printStackTrace();
            return;
        }

        String accessToken;
        try {
            // Authenticate using client credentials and private key
            IConfidentialClientApplication app = ConfidentialClientApplication.builder(clientId, ClientCredentialFactory.createFromCertificate(privateKey))
                    .authority("https://login.microsoftonline.com/" + tenantId)
                    .build();
            IAuthenticationResult result = app.acquireToken(new ClientCredentialParameters().scopes(Collections.singleton("https://graph.microsoft.com/.default"))).join();
            accessToken = result.accessToken();
        } catch (MalformedURLException e) {
            e.printStackTrace();
            return;
        }

        // Add the access token to the request headers
        request.addHeader("Authorization", "Bearer " + accessToken);
    }
}

方法2：禁用SSL证书验证

import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.microsoft.graph.http.IHttpRequest;
import javax.net.ssl.*;

public class DisableSSLCertificateValidationProvider implements IAuthenticationProvider {
    @Override
    public void authenticateRequest(IHttpRequest request) {
        try {
            // Create a trust manager that does not validate certificate chains
            TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                    return null;
                }

                public void checkClientTrusted(
                        java.security.cert.X509Certificate[] certs, String authType) {
                }

                public void checkServerTrusted(
                        java.security.cert.X509Certificate[] certs, String authType) {
                }
            }};

            // Install the trust manager
            SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
            HttpsURLConnection.setDefaultHostnameVerifier((hostname, sslSession) -> true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

使用示例：

import com.microsoft.graph.models.extensions.*;
import com.microsoft.graph.requests.extensions.*;
import com.microsoft.graph.authentication.IAuthenticationProvider;
import com.microsoft.graph.http.IHttpRequest;

public class Main {
    public static void main(String[] args) {
        final String clientId = "YOUR_CLIENT_ID";
        final String clientSecret = "YOUR_CLIENT_SECRET";
        final String tenantId = "YOUR_TENANT_ID";
        final String certificatePath = "YOUR_CERTIFICATE_PATH";
        final String certificatePassword = "YOUR_CERTIFICATE_PASSWORD";

        // Create the authentication provider
        IAuthenticationProvider authenticationProvider = new CustomAuthenticationProvider(clientId, clientSecret, tenantId, certificatePath, certificatePassword);

        // Create the GraphServiceClient with the authentication provider
        GraphServiceClient graphClient = GraphServiceClient.builder()
                .authenticationProvider(authenticationProvider)
                .buildClient();

        // Use the GraphServiceClient to make API calls
        User me = graphClient.me().buildRequest().get();
        System.out.println("Hello, " + me.displayName);
    }
}

请替换示例代码中的YOUR_CLIENT_ID、YOUR_CLIENT_SECRET、YOUR_TENANT_ID、YOUR_CERTIFICATE_PATH和YOUR_CERTIFICATE_PASSWORD为您自己的值。方法1使用自定义证书进行