引起:java.net.ConnectException:连接被拒绝:连接 org.springframework.web.client.ResourceAccessException:POST 上的 I/O 错误 [英] Caused by: java.net.ConnectException: Connection refused: connect org.springframework.web.client.ResourceAccessException: I/O error on POST

问题描述

我有以下 CURL 命令，它工作得很好.但是当通过java代码使用时.我正在使用 WSO2 API Manager 版本 1.9.1

I've the following CURL command which works very fine. But when using through java code. I am using WSO2 API Manager version 1.9.1

 curl -k -d "grant_type=password&username=test&password=test" -H 
"Authorization: Basic QU01dE04MXFrdzg5ZFNFTjk2Vm0waGgwWnBNYTpzeHcxbko3c2gzdm5NVVlmUDEzVmV1bWtsbTRh, 
Content-Type: application/x-www-form-urlencoded" https://XXXXXX:8243/token

我使用 RestTemplate API 开发了以下代码

I developed the following code using RestTemplate API

public class Demo {

    public static void main(String[] args) {
        String url = "https://xxxxxxxx:8243/token";

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.add("Authorization", "Basic QU01dE04MXFrdzg5ZFNFTjk2Vm0waGgwWnBNYTpzeHcxbko3c2gzdm5NVVlmUDEzVmV1bWtsbTRh");
        headers.add("Content-Type", "application/x-www-form-urlencoded");
        headers.add("data", "grant_type=password&username=mahesh&password=mahesh00");

        String json =" {\"data\":\"grant_type=password&username=test&password=test\"}";
        HttpEntity<String> postEntity = new HttpEntity<String>(json, headers);

        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> response =restTemplate.exchange(url, HttpMethod.POST,postEntity,String.class);

        System.out.println("\nSTATUS : "+ response.getStatusCode()+" "+response.getStatusCode().getReasonPhrase());
        System.out.println("Response :"+ response.getBody());
    }
}

当我在下面执行时，我看到以下错误:

When I execute below, I see the following error:

Exception in thread "main" org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://192.168.0.102:8243/token":java.security.cert.CertificateException: No subject alternative names present; nested exception is javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative names present
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:580)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:530)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:448)
    at com.java.pushNotifications.Demo.main(Demo.java:25)
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative names present
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1904)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:279)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:273)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1446)
    at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:209)
    at sun.security.ssl.Handshaker.processLoop(Handshaker.java:901)
    at sun.security.ssl.Handshaker.process_record(Handshaker.java:837)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1023)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1332)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1359)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1343)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153)
    at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:81)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:569)
    ... 3 more
Caused by: java.security.cert.CertificateException: No subject alternative names present
    at sun.security.util.HostnameChecker.matchIP(HostnameChecker.java:142)
    at sun.security.util.HostnameChecker.match(HostnameChecker.java:91)
    at sun.security.ssl.X509TrustManagerImpl.checkIdentity(X509TrustManagerImpl.java:347)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:203)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:126)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1428)
    ... 17 more

推荐答案

您忘记在 Java 代码中指定端口:

You forgot to specify the port in your java code:

https://192.168.0.102:/token

应该是:

https://192.168.0.102:8243/token

您还忘记像使用 curl 命令那样在此处隐藏 IP，但由于它是内部 IP，因此无需理会它，因此在您自己的 LAN 之外没有任何意义.所以我也没有掩盖它.

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