小编use*_*897的帖子

我有一个在Java 6上运行的旧版应用程序。但是，由于某些安全因素，我们需要升级到TLS 1.2。为此，我尝试了以下代码：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLParameters;

public class TlsCheck {

/**
 * test whether this client can connect to TLS v1.2 or not
 */

public static boolean isSuccessfulTLS12connection(){
    try{
        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(null, null, null);
        HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());

        URL url = new URL("https://tlstest.paypal.com");
        HttpsURLConnection httpsConnection = (HttpsURLConnection)url.openConnection();
        httpsConnection.connect();
        BufferedReader reader = new BufferedReader(new InputStreamReader(httpsConnection.getInputStream()));
        StringBuilder body = new StringBuilder();
        while(reader.ready()){
            body.append(reader.readLine());
        } …