之前在做http改造成https时使用JDK生成的keystore证书文件，在不同的中间件上使用的证书文件有所不同。我需要将keystore文件转换成pfx文件，（下面代码忘记从那个大神的博客拷贝下来的）这里记录一下以防之后找不到

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.security.Key;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.util.Enumeration;public class TestCa {public static final String PKCS12 = "PKCS12";public static final String JKS = "JKS";public static final String PFX_KEYSTORE_FILE = "D:\\ca\\kf.pfx";public static final String KEYSTORE_PASSWORD = "123456";public static final String JKS_KEYSTORE_FILE = "D:\\ca\\kf.keystore";/*** 将pfx或p12的文件转为keystore*/public static void coverTokeyStore() {try {KeyStore inputKeyStore = KeyStore.getInstance("PKCS12");FileInputStream fis = new FileInputStream(PFX_KEYSTORE_FILE);char[] nPassword = null;if ((KEYSTORE_PASSWORD == null)|| KEYSTORE_PASSWORD.trim().equals("")) {nPassword = null;} else {nPassword = KEYSTORE_PASSWORD.toCharArray();}inputKeyStore.load(fis, nPassword);fis.close();KeyStore outputKeyStore = KeyStore.getInstance("JKS");outputKeyStore.load(null, KEYSTORE_PASSWORD.toCharArray());Enumeration enums = inputKeyStore.aliases();while (enums.hasMoreElements()) { // we are readin just one// certificate.String keyAlias = (String) enums.nextElement();System.out.println("alias=[" + keyAlias + "]");if (inputKeyStore.isKeyEntry(keyAlias)) {Key key = inputKeyStore.getKey(keyAlias, nPassword);Certificate[] certChain = inputKeyStore.getCertificateChain(keyAlias);outputKeyStore.setKeyEntry(keyAlias, key,KEYSTORE_PASSWORD.toCharArray(), certChain);}}FileOutputStream out = new FileOutputStream(JKS_KEYSTORE_FILE);outputKeyStore.store(out, nPassword);out.close();} catch (Exception e) {e.printStackTrace();}}/*** 将keystore转为pfx*/public static void coverToPfx() {try {KeyStore inputKeyStore = KeyStore.getInstance("JKS");FileInputStream fis = new FileInputStream(JKS_KEYSTORE_FILE);char[] nPassword = null;if ((KEYSTORE_PASSWORD == null)|| KEYSTORE_PASSWORD.trim().equals("")) {nPassword = null;} else {nPassword = KEYSTORE_PASSWORD.toCharArray();}inputKeyStore.load(fis, nPassword);fis.close();KeyStore outputKeyStore = KeyStore.getInstance("PKCS12");outputKeyStore.load(null, KEYSTORE_PASSWORD.toCharArray());Enumeration enums = inputKeyStore.aliases();while (enums.hasMoreElements()) { // we are readin just one// certificate.String keyAlias = (String) enums.nextElement();System.out.println("alias=[" + keyAlias + "]");if (inputKeyStore.isKeyEntry(keyAlias)) {Key key = inputKeyStore.getKey(keyAlias, nPassword);Certificate[] certChain = inputKeyStore.getCertificateChain(keyAlias);outputKeyStore.setKeyEntry(keyAlias, key,KEYSTORE_PASSWORD.toCharArray(), certChain);}}FileOutputStream out = new FileOutputStream(PFX_KEYSTORE_FILE);outputKeyStore.store(out, nPassword);out.close();} catch (Exception e) {e.printStackTrace();}}public static void main(String[] args) {coverToPfx();}}