Java中https請求報錯,信任所有ssl證書。解決javax.net.ssl.SSLHandshakeException: PKIX path building failed

Java 信任所有SSL證書，HTTPS請求拋錯，忽略證書請求完美解決

• 解決方案：在openConnection之前調用該util

• util代碼

package com.warren.util;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

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

public class SslUtils {

    public static void trustAllHttpsCertificates() throws Exception {
        TrustManager[] trustAllCerts = new TrustManager[1];
        TrustManager tm = new miTM();
        trustAllCerts[0] = tm;
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, null);
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    }

    static class miTM implements TrustManager,X509TrustManager {
        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public boolean isServerTrusted(X509Certificate[] certs) {
            return true;
        }

        public boolean isClientTrusted(X509Certificate[] certs) {
            return true;
        }

        public void checkServerTrusted(X509Certificate[] certs, String authType)
                throws CertificateException {
            return;
        }

        public void checkClientTrusted(X509Certificate[] certs, String authType)
                throws CertificateException {
            return;
        }
    }

    /**
     * 忽略HTTPS請求的SSL證書，必須在openConnection之前調用
     * @throws Exception
     */
    public static void ignoreSsl() throws Exception{
        HostnameVerifier hv = new HostnameVerifier() {
            public boolean verify(String urlHostName, SSLSession session) {
                return true;
            }
        };
        trustAllHttpsCertificates();
        HttpsURLConnection.setDefaultHostnameVerifier(hv);
    }
}

• 使用方式：

//1. 下載地址
        URL url = new URL("https://p1.music.126.net/qsRYc_3XeaXUWR1vGnm6vA==/109951164743134727.jpg?param=140y140");
        //https協議的鏈接會因為證書問題報錯
        //在openConnection前調用該方法,信任所有SSL證書
        SslUtils.ignoreSsl();
        //2. 連接到這個資源
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();

        InputStream inputStream = urlConnection.getInputStream();

OK!