报错 unable to find valid certification path to requested target executing

提示信息：

审核失败！sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target executing POST 。。。 。。。

出现原因
这个问题的根本原因是你安装JDK时，Java\jar 1.8.0_141\lib\ext\里面缺少了一个安全凭证jssecacerts证书文件，通过运行下面类可以生成证书，将生成的证书放在Java\jar 1.8.0_141\lib\ext\这个目录下，重启编译器就可以解决。

解决方式有两种 第一种直接在发送请求的时候忽略掉http证书验证，第二种方式本地下载个证书

第一种：解决方式是在发送http请求的时候，可以过滤掉所有的https证书验证。

/**
 * POST请求
 *
 * @param url
 * @param data
 * @return
 */
public String sendPost() {
    LOG.info("send to tanggong : " + data);
    String result = null;
    CloseableHttpClient httpClient = HttpClients.createDefault();
    //isNoSSL是否需要走特殊方法
    if(isNoSSL) 
    { 
        httpClient = (CloseableHttpClient)wrapClient(httpClient); 
    }
    HttpPost post = new HttpPost(httpUrl);
    post.addHeader("Content-type","application/json; charset=utf-8");
    post.setHeader("Accept", "application/json");
    CloseableHttpResponse response = null;
    try {
        StringEntity sen = new StringEntity(data.toString(),Charset.forName("UTF-8"));
        sen.setContentEncoding("UTF-8");
        sen.setContentType("application/json");
        post.setEntity(sen);
        response = httpClient.execute(post);
        if (response != null && response.getStatusLine().getStatusCode() == 200) {
            HttpEntity entity = response.getEntity();
            result = EntityUtils.toString(entity);
        }
        LOG.info("ZP return :" + result);
        return result;
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            httpClient.close();
            if (response != null) {
                response.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return null;
}
 
 
/**
 * 避免HttpClient的”SSLPeerUnverifiedException: peer not authenticated”异常
 * 不用导入SSL证书
 * @param base
 * @return
 */ 
public static HttpClient wrapClient(HttpClient base) { 
    try { 
        SSLContext ctx = SSLContext.getInstance("TLS"); 
        X509TrustManager tm = new X509TrustManager() { 
        
            @Override
            public void checkClientTrusted(java.security.cert.X509Certificate[] arg0, String arg1)
                    throws java.security.cert.CertificateException {
                // TODO Auto-generated method stub
                 
            }
 
            @Override
            public void checkServerTrusted(java.security.cert.X509Certificate[] arg0, String arg1)
                    throws java.security.cert.CertificateException {
                // TODO Auto-generated method stub
                 
            }
 
            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                // TODO Auto-generated method stub
                return null;
            } 
        }; 
        ctx.init(null, new TrustManager[] { tm }, null); 
        SSLConnectionSocketFactory ssf = new SSLConnectionSocketFactory(ctx,NoopHostnameVerifier.INSTANCE); 
        CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(ssf).build(); 
        return httpclient; 
    } catch (Exception ex) { 
        ex.printStackTrace(); 
        return HttpClients.createDefault(); 
    } 
} 

第二种方式：

1、生成安全证书
2、放入jre相应路径下

生成安全证书

import java.io.*;
import java.net.URL;
 
import java.security.*;
import java.security.cert.*;
 
import javax.net.ssl.*;
 
public class InstallCert {
 
    public static void main(String[] args) throws Exception {
        String host;
        int port;
        char[] passphrase;
        if ((args.length == 1) || (args.length == 2)) {
            String[] c = args[0].split(":");
            host = c[0];
            port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
            String p = (args.length == 1) ? "changeit" : args[1];
            passphrase = p.toCharArray();
        } else {
            System.out.println("Usage: java InstallCert <host>[:port] [passphrase]");
            return;
        }
 
        File file = new File("jssecacerts");
        if (file.isFile() == false) {
            char SEP = File.separatorChar;
            File dir = new File(System.getProperty("java.home") + SEP
                    + "lib" + SEP + "security");
            file = new File(dir, "jssecacerts");
            if (file.isFile() == false) {
                file = new File(dir, "cacerts");
            }
        }
        System.out.println("Loading KeyStore " + file + "...");
        InputStream in = new FileInputStream(file);
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(in, passphrase);
        in.close();
 
        SSLContext context = SSLContext.getInstance("TLS");
        TrustManagerFactory tmf =
                TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(ks);
        X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0];
        SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
        context.init(null, new TrustManager[] {tm}, null);
        SSLSocketFactory factory = context.getSocketFactory();
 
        System.out.println("Opening connection to " + host + ":" + port + "...");
        SSLSocket socket = (SSLSocket)factory.createSocket(host, port);
        socket.setSoTimeout(10000);
        try {
            System.out.println("Starting SSL handshake...");
            socket.startHandshake();
            socket.close();
            System.out.println();
            System.out.println("No errors, certificate is already trusted");
        } catch (SSLException e) {
            System.out.println();
            e.printStackTrace(System.out);
        }
 
        X509Certificate[] chain = tm.chain;
        if (chain == null) {
            System.out.println("Could not obtain server certificate chain");
            return;
        }
 
        BufferedReader reader =
                new BufferedReader(new InputStreamReader(System.in));
 
        System.out.println();
        System.out.println("Server sent " + chain.length + " certificate(s):");
        System.out.println();
        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        for (int i = 0; i < chain.length; i++) {
            X509Certificate cert = chain[i];
            System.out.println
                    (" " + (i + 1) + " Subject " + cert.getSubjectDN());
            System.out.println("   Issuer  " + cert.getIssuerDN());
            sha1.update(cert.getEncoded());
            System.out.println("   sha1    " + toHexString(sha1.digest()));
            md5.update(cert.getEncoded());
            System.out.println("   md5     " + toHexString(md5.digest()));
            System.out.println();
        }
 
        System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
        String line = reader.readLine().trim();
        int k;
        try {
            k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
        } catch (NumberFormatException e) {
            System.out.println("KeyStore not changed");
            return;
        }
 
        X509Certificate cert = chain[k];
        String alias = host + "-" + (k + 1);
        ks.setCertificateEntry(alias, cert);
 
        OutputStream out = new FileOutputStream("jssecacerts");
        ks.store(out, passphrase);
        out.close();
 
        System.out.println();
        System.out.println(cert);
        System.out.println();
        System.out.println
                ("Added certificate to keystore 'jssecacerts' using alias '"
                        + alias + "'");
    }
 
    private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
 
    private static String toHexString(byte[] bytes) {
        StringBuilder sb = new StringBuilder(bytes.length * 3);
        for (int b : bytes) {
            b &= 0xff;
            sb.append(HEXDIGITS[b >> 4]);
            sb.append(HEXDIGITS[b & 15]);
            sb.append(' ');
        }
        return sb.toString();
    }
 
    private static class SavingTrustManager implements X509TrustManager {
 
        private final X509TrustManager tm;
        private X509Certificate[] chain;
 
        SavingTrustManager(X509TrustManager tm) {
            this.tm = tm;
        }
 
        public X509Certificate[] getAcceptedIssuers() {
            throw new UnsupportedOperationException();
        }
 
        public void checkClientTrusted(X509Certificate[] chain, String authType)
                throws CertificateException {
            throw new UnsupportedOperationException();
        }
 
        public void checkServerTrusted(X509Certificate[] chain, String authType)
                throws CertificateException {
            this.chain = chain;
            tm.checkServerTrusted(chain, authType);
        }
    }
 
}

D:\桌面\ 。。。\src\main\java\com\ideal\sk>java InstallCert 需要访问的地址:端口

或者设置idea 运行的args参数

执行完后会出现这样的界面

直接输入1，然后会在相应的目录下产生一个名为‘jssecacerts’的证书

将证书copy到$JAVA_HOME/jre/lib/security目录下

重启程序即可解决文章来源地址https://www.toymoban.com/news/detail-776312.html

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