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 程式師世界 >> 編程語言 >> JAVA編程 >> 關於JAVA >> java獲取https網站證書,附帶調用https:webservice接口

java獲取https網站證書,附帶調用https:webservice接口

編輯:關於JAVA

java獲取https網站證書,附帶調用https:webservice接口。本站提示廣大學習愛好者:(java獲取https網站證書,附帶調用https:webservice接口)文章只能為提供參考,不一定能成為您想要的結果。以下是java獲取https網站證書,附帶調用https:webservice接口正文


 一、java 獲取https網站證書:

  1、創立一個java工程,新建InstallCert類,將以下代碼復制出來

package com;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;  
 /**
  * 從網站獲取java所需的證書,調用時傳入域名。
  */
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);  
    }  
    }  
  
}  
InstallCert.java

     2、eclipse 傳入參數(需求獲取證書的域名或ip,例:www.baidu.com)運轉main辦法:

  

注:這裡留意更改參數的類,不要弄錯了。

 3、點擊 run 後控制台會報錯,不必管:

在控制台輸出 1 回車:

4、完成,會在工程目錄下生成證書文件 jssecacerts

==================以上就是獲取https網站證書的整個進程。======================

 

二、 調用https的webservice接口,假如不注冊證書的話就會報錯。上面是注冊證書的步驟:

1、在需求調用webservice接口的類裡加一個靜態代碼塊:

    /*
     * 設置證書。
     */
    static{
        javax.net.ssl.HttpsURLConnection.setDefaultHostnameVerifier(
                new javax.net.ssl.HostnameVerifier(){
                    public boolean verify(String hostname,
                            javax.net.ssl.SSLSession sslSession) {
                        //域名或ip地址
                        if (hostname.equals("www.baidu.com")) {
                            return true;
                        }
                        return false;
                    }
                });
        //第二個參數為證書的途徑
        System.setProperty("javax.net.ssl.trustStore", "C:\\Program Files\\Java\\jdk1.7.0_45\\jre\\lib\\security\\jssecacerts");
        System.setProperty("javax.net.ssl.trustStorePassword", "changeit");
    }
View Code

 

2、將域名修正為獲取證書的域名,這裡是 www.baidu.com。

3、設置證書途徑,我這裡將獲取到的證書復制到了jdk的security目錄下了。這個目錄為jdk的證書寄存目錄,建議將證書放到此目錄。

4、完成,如今可以調用https的webservice接口了。

 注:假如經過以上步驟後仍然報錯,請反省:

1、證書途徑能否正確;

2、獲取證書時分所填寫的域名或ip,能否是要調用的webservice接口的域名或ip;

3、靜態代碼塊裡的域名或ip,能否與獲取證書的域名或ip對應;

 

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