JAVA怎樣調用https類型的webservice

第

壹步按照Axis生成本地訪問客戶端，完成正常的webservice調用的開發，這裏的細節我就不再描述，重點說明和

，那麽就需要生成網址的安全證書設置到系統屬性中，並且需要在調用代碼前。如下圖

第二步就是介紹怎樣生成證書，先寫壹個InstallCert.java類放到自己電腦的D盤根目錄下，（註意這個類是沒有包名的）類中代碼如下：

/**

*

*/

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;

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);

}

}

}

將上面的InstallCert.java編譯成InstallCert.class文件放到自己電腦的D盤根目錄下。這是正常的情況下D盤根目錄下會有3個文件，

打開cmd進入到d盤開始執行生成證書命令，我這裏不便於那我的網址測試我用支付寶的網址來測試的，輸入：java InstallCert

當出現了：Enter certificate to add to trusted keystore or 'q' to quit: [1]

這行代碼時，輸入1，回車。正常執行完後在D盤根目錄下就會出現證書“jssecacerts”文件，

得到證書後將證書拷貝到$JAVA_HOME/jre/lib/security目錄下，我這裏是win7系統，在嘗試的過程中需要將證書重命名為：cacerts 放進去才會有用。（這個步驟在不同的環境和操作系統下有點不同，需要註意）