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解决PKIX path building failed的问题以及示例

java 来源:chenz_yang 2次浏览

这个是证书出问题了,服务器不信任我们自己创建的证书,所以在代码中必须要忽略证书信任问题。
解决方法:
第一步:首先创建一个SslUtil工具类,在里面做忽略证书信任操作:

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 SslUtil { 
    private 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请求的SSL证书,必须在openConnection之前调用 * @throws Exception */
    public static void ignoreSsl() throws Exception{
        HostnameVerifier hv = new HostnameVerifier() {
            public boolean verify(String urlHostName, SSLSession session) {
                System.out.println("Warning: URL Host: " + urlHostName + " vs. " + session.getPeerHost());
                return true;
            }
        };
        trustAllHttpsCertificates();
        HttpsURLConnection.setDefaultHostnameVerifier(hv);
    }
}

示例代码:

String urlStr="测试网址";
URL urlPost = null;
urlPost = new URL(urlStr);
if("https".equalsIgnoreCase(urlPost.getProtocol())){//判定网址是否信任,不信任则调用忽略信任工具类SslUtil
    SslUtil.ignoreSsl();
}
...//往下就是建立连接connection了

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