抓取https网页报错sun.security.validator.ValidatorException: PKIX path building failed解决
原文链接: https://www.cnblogs.com/zdz8207/p/java-https-ssl-jsoup.html
抓取https网页时,报错sun.security.validator.ValidatorException: PKIX path building failed 解决办法
原因是https证书问题,java抓取时忽略掉证书才能访问。jsoup在调用前先执行下以下忽略证书请求就可以了。
try { //先调用下忽略https证书的再请求才可以 HttpsUrlValidator.retrieveResponseFromServer(url); doc = Jsoup .connect(url) .header("User-Agent",rand_agents) .timeout(10000).get(); body = doc.getElementsByTag("body").html(); } catch (Exception e) { log.info(e.getMessage()); }
StringUtils.substringBetween("hello world", "l", "r"); //结果是: lo wo 第一个字符“l”与第一个字符“r”之间的字符串
datas.retainAll(arrs);
HttpsUrlValidator 类:
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLSession; public class HttpsUrlValidator { static HostnameVerifier hv = new HostnameVerifier() { public boolean verify(String urlHostName, SSLSession session) { System.out.println("Warning: URL Host: " + urlHostName + " vs. " + session.getPeerHost()); return true; } }; public final static String retrieveResponseFromServer(final String url) { HttpURLConnection connection = null; try { URL validationUrl = new URL(url); trustAllHttpsCertificates(); HttpsURLConnection.setDefaultHostnameVerifier(hv); connection = (HttpURLConnection) validationUrl.openConnection(); final BufferedReader in = new BufferedReader(new InputStreamReader( connection.getInputStream())); String line; final StringBuffer stringBuffer = new StringBuffer(255); synchronized (stringBuffer) { while ((line = in.readLine()) != null) { stringBuffer.append(line); stringBuffer.append("\n"); } return stringBuffer.toString(); } } catch (final IOException e) { System.out.println(e.getMessage()); return null; } catch (final Exception e1){ System.out.println(e1.getMessage()); return null; }finally { if (connection != null) { connection.disconnect(); } } } public static void trustAllHttpsCertificates() throws Exception { javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1]; javax.net.ssl.TrustManager tm = new miTM(); trustAllCerts[0] = tm; javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext .getInstance("SSL"); sc.init(null, trustAllCerts, null); javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc .getSocketFactory()); } static class miTM implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager { public java.security.cert.X509Certificate[] getAcceptedIssuers() { return null; } public boolean isServerTrusted( java.security.cert.X509Certificate[] certs) { return true; } public boolean isClientTrusted( java.security.cert.X509Certificate[] certs) { return true; } public void checkServerTrusted( java.security.cert.X509Certificate[] certs, String authType) throws java.security.cert.CertificateException { return; } public void checkClientTrusted( java.security.cert.X509Certificate[] certs, String authType) throws java.security.cert.CertificateException { return; } } }