HttpClient跳过https证书认证

- 日理万妓 2021-12-21 23:21 323阅读 0赞

起因是因为报了一个错

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    	at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    	at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949)
    	at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302)
    	at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
    	at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1509)
    	at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
    	at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
    	at sun.security.ssl.Handshaker.process_record(Handshaker.java:914)
    	at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062)
    	at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
    	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
    	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
    	at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:396)
    	at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:355)
    	at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    	at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:373)
    	at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:394)
    	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)
    	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
    	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
    	at com.cyj.demo.Demo02.main(Demo02.java:48)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    	at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
    	at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292)
    	at sun.security.validator.Validator.validate(Validator.java:260)
    	at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
    	at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
    	at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
    	at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1491)
    	... 20 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    	at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
    	at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
    	at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
    	at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
    	... 26 more

研究了一下，是因为我们进行https连接时，需要证书进行认证，我们在java代码中可以通过跳过认证来避免这种情况

import org.apache.http.client.config.RequestConfig;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.config.Registry;
    import org.apache.http.config.RegistryBuilder;
    import org.apache.http.conn.socket.ConnectionSocketFactory;
    import org.apache.http.conn.socket.PlainConnectionSocketFactory;
    import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClients;
    import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
    
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.X509TrustManager;
    import java.security.cert.CertificateException;
    import java.security.cert.X509Certificate;
    
    public class Demo02 { 
    
        public static void main(String[] args) { 
            HttpPost httpPost = new HttpPost("XXXXXXXXX");
            // 请求头
            httpPost.addHeader("Accept", "application/json");
            httpPost.addHeader("Connection", "keep-alive");
            httpPost.addHeader("Content-Type", "application/json");
    
    
            RequestConfig config = RequestConfig
                    .custom()
                    .setConnectTimeout(100)
                    .setSocketTimeout(80)
                    .build();
    
            //这部分代码是重点
            SSLContext sslContext = getSSLContext();
            Registry<ConnectionSocketFactory> socketFactoryRegistry =
                    RegistryBuilder.<ConnectionSocketFactory>create()
                            .register("http", PlainConnectionSocketFactory.INSTANCE)
                            .register("https", new SSLConnectionSocketFactory(sslContext)).build();
            PoolingHttpClientConnectionManager mananger = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
            mananger.setMaxTotal(100);
            mananger.setDefaultMaxPerRoute(20);
    
            CloseableHttpClient client = HttpClients
                    .custom()
                    .setDefaultRequestConfig(config)
                    .setConnectionManager(mananger)
                    .build();
    
            try { 
                client.execute(httpPost);
            } catch (Exception e) { 
                e.printStackTrace();
            }
    
        }
    
        private static SSLContext getSSLContext() { 
            try { 
                // 这里可以填两种值 TLS和LLS , 具体差别可以自行搜索
                SSLContext sc = SSLContext.getInstance("TLS");
                // 构建新对象
                X509TrustManager manager = new X509TrustManager() { 
                    @Override
                    public void checkClientTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException { 
                    }
    
                    @Override
                    public void checkServerTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException { 
                    }
    
                    // 这里返回Null
                    @Override
                    public X509Certificate[] getAcceptedIssuers() { 
                        return null;
                    }
                };
                sc.init(null, new TrustManager[]{ manager}, null);
                return sc;
            } catch (Exception e) { 
                e.printStackTrace();
            }
            return null;
        }
    
    }