Java SSL握手警报无协商

与Web服务通信时发生此错误

客户端报告的错误：

javax.net.ssl.SSLException: Received fatal alert: unexpected_message
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1991)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1098)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:903)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:102)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
    at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:687)
    at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:633)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1324)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
    at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:2223)
    at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:2192)
    at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:2036)

服务器日志中有一个错误

---

javax.net.ssl.SSLProtocolException:handshake\u alert

看起来服务器没有更新到RFC 5746

我偶然发现并发现

如果服务器没有按照RFC 5746响应，则客户端必须中止重新协商握手

然后我发现

sun.security.ssl.allowUnsafeRenegotiation-在第1阶段引入，它控制是否允许遗留（不安全）重新协商

临时修复程序是添加系统属性

-Dsun.security.ssl.allowUnsafeRenegotiation=true

但这并不是错误发生的真正原因。真正的原因是我的客户机使用的是旧的SSL

tlsClientParameters.setSecureSocketProtocol（“SSL”）

我对该行进行了注释，因此使用了默认值：
“TLS”
，之后通信工作正常