以下代码将CA cert文件
yourcert.cer插入您的密钥库，而无需使用
keytool：
import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.security.Key;import java.security.KeyStore;import java.security.cert.Certificate;import java.io.IOException;import java.io.InputStream;import java.io.DataInputStream;import java.io.ByteArrayInputStream;import java.security.spec.*;import java.security.cert.Certificate;import java.security.cert.CertificateFactory;import java.util.Collection;public class importCA { public static void main(String[] argv) throws Exception { String certfile = "yourcert.cer"; FileInputStream is = new FileInputStream("yourKeyStore.keystore"); KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType()); keystore.load(is, "yourKeyStorePass".toCharArray()); String alias = "youralias"; char[] password = "yourKeyStorePass".toCharArray(); ////// CertificateFactory cf = CertificateFactory.getInstance("X.509"); InputStream certstream = fullStream (certfile); Certificate certs = cf.generateCertificate(certstream); /// File keystoreFile = new File("yourKeyStorePass.keystore"); // Load the keystore contents FileInputStream in = new FileInputStream(keystoreFile); keystore.load(in, password); in.close(); // Add the certificate keystore.setCertificateEntry(alias, certs); // Save the new keystore contents FileOutputStream out = new FileOutputStream(keystoreFile); keystore.store(out, password); out.close(); } private static InputStream fullStream ( String fname ) throws IOException { FileInputStream fis = new FileInputStream(fname); DataInputStream dis = new DataInputStream(fis); byte[] bytes = new byte[dis.available()]; dis.readFully(bytes); ByteArrayInputStream bais = new ByteArrayInputStream(bytes); return bais; }}
