如何从Java应用程序访问HTTPS URL
我知道这是一个非常基本的问题,但是有些问题使我无法找到解决该问题的方法.我有一个具有主要方法的Java类.在这种方法中,我尝试按如下方式访问https网址:
I know this is a very basic question, but some how I have managed to not find a solution to this problem. I have a java class that has a main method. In that method, I try to access an https url as below:
package helloworld;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
public class ConnectHttps
{
public static void main(String[] argsd)
{
System.out.println("***************Https testing started **************");
try
{
URL u = new URL("https://localhost:8443/myapp/test");
HttpsURLConnection http = (HttpsURLConnection) u.openConnection();
http.setAllowUserInteraction(true);
http.setRequestMethod("GET");
http.connect();
InputStream is = http.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder stringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
stringBuilder.append(line
+ "\n");
}
System.out.println(stringBuilder.toString());
System.out.println("***************Https testing completed **************");
}
catch (IOException e)
{
System.out.println("***************Https testing failed **************");
e.printStackTrace();
}
}
}
执行该程序时,我得到的输出是:
On executing this program, the output I get is:
***************Https testing started **************
***************Https testing failed **************
javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No name matching localhost found
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1886)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:276)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:270)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1341)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:153)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:868)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:804)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1016)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1312)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:515)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153)
at helloworld.ConnectHttps.main(ConnectHttps.java:59)
我想我在这里犯了一个非常基本的错误.
I guess I am doing a very basic mistake here.
我正在使用JDK 1.7.0_25.
I am using JDK 1.7.0_25.
java.net.ConnectException: Connection timed out: connect
这与SSL/TLS无关.相反,您的客户端根本无法连接到服务器(至少在合理的时间内).
This is not really related to SSL/TLS. Rather, your client can't connect to the server at all (at least not within a reasonable time).
很有可能存在防火墙阻止您进行此类连接.
It's quite possible that there's a firewall preventing you from making such connections.
您可能必须通过代理,在这种情况下,HttpsURLConnection
应考虑设置https.proxyHost
和https.proxyPort
系统属性.
You might have to go through a proxy, in which case setting the https.proxyHost
and https.proxyPort
system properties should be taken into account by HttpsURLConnection
.