⑴ java怎樣調用https類型的webservice
方法/步驟
第
一步按照Axis生成本地訪問客戶端，完成正常的webservice調用的開發，這里的細節我就不再描述，重點說明和http不同的地方-證書的生成和
使用。這里假設需要訪問的網址是https://www.abc.com
，那麼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，先寫一個InstallCert.java類放到自己電腦的D盤根目錄下，（注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，我這里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，我這里是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，需要注意）
⑵ java調用webservice 報(400) Bad Request
在網上查了一下，可能是本地cookie隱私設置的問題。一般在上網瀏覽網站的時候第一次打開完網頁再打開連接以後就出現HTTP 400 - 錯誤請求的問題。
解決的方法如下：
1、打開internet選項
2、刪除所有的cookies
3、點隱私把隱私級別設置到最高阻止所有的cookie
這樣瀏覽網頁的時候就不會再出現HTTP 400 - 錯誤請求的問題了。但是瀏覽某些需要cookie的網站（如：論壇或需要登陸的站點）時候就無法登陸了，所以在瀏覽完後記得要把隱私級別降低調回來，登陸站點以後保留cookies就可以了。
⑶ 現在java調用webservice是用什麼技術
JAVA調用WS介面現在用的比較多就是AXIS和CXF了
最早的時候是使用AXIS的比較多，因為這個是最早支持JAVA的WS介面的，像ECLIPSE里都自帶了AXIS，然後因為AXIS很久沒有更新了，這時候CXF慢慢進入大家眼中
CXF的介面實現起來更簡單，和其它語言實現的介面互相調用的時候兼容性也很好，再加上還有REST可以更簡單的訪問資源,現在很多新項目都會考慮用CXF，但是有很多老項目還是用的AXIS，如果維護的話也得能看懂，所以還是可以兩個都應該學學，必竟就是實現的方式有些不同而已，原理都是差不多的
關於CXF這個我之前找到一個哥們寫的一些很不錯的筆記，如果有興趣的話你可以去參考參考 http://my.oschina.net/huangyong/blog/294324