随机SSLException不支持的记录版本Unknown-0.0 [英] Randomly SSLException Unsupported record version Unknown-0.0

问题描述

有时下面的代码会失败，有时它会起作用。我正在使用Java8。它是服务器端问题吗？

Sometimes the code below fails and sometimes it work. I'm using Java8. Is it a server side problem?

线程main中的异常javax.net.ssl.SSLException：不支持的记录版本Unknown-0.0。

Exception in thread "main" javax.net.ssl.SSLException: Unsupported record version Unknown-0.0.

编辑：
我从JDK8降级到JDK7并且它有效。我发现唯一有效的解决方案。

I downgrade to JDK7 from JDK8 and it works. The only solution i found that works.

public static void main(String[] args) throws Exception {
    URL u = new URL("https://c********.web.cddbp.net/webapi/xml/1.0/");
    HttpURLConnection connection = (HttpURLConnection) u.openConnection();
    connection.setDoOutput(true);
    connection.setDoInput(true);
    connection.setInstanceFollowRedirects(false);
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type", "text/plain");
    connection.setRequestProperty("charset", "utf-8");
    connection.setRequestProperty("Content-Length", "" + 140);
    connection.setUseCaches(false);
    DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
}

推荐答案

我收到了同样的错误信息在尝试使用强制256位加密的SSL连接时，在新的Java安装中。为了解决这个问题，我发现我需要安装Java Cryptography Extension（JCE）Unlimited Strength Jurisdiction Policy Files（例如 http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html ）

I got the same error message in a new java installation when trying to use an SSL connection that enforces 256-bit encryption. To fix the problem I found I needed to install the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files (e.g. http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html)

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