cas 单点登录出现org.jasig.cas.client.util.CommonUtils.getResponseFromServer - 拒绝连接 Connection refused

2022-10-11 18:35:13

cas 单点登录出现org.jasig.cas.client.util.CommonUtils.getResponseFromServer - 拒绝连接 Connection refused

环境：

  • CentOS Linux release 7.2.1511 (Core)
  • cas-client-core-3.1.12.jar

最近在对cas环境进行切换，原来好好的环境。部署在新环境下却出现org.jasig.cas.client.util.CommonUtils.getResponseFromServer - 拒绝连接异常。

2016-08-18 17:05:08.718 [http-bio-8080-exec-9] ERROR org.jasig.cas.client.util.CommonUtils.getResponseFromServer - 拒绝连接

java.net.ConnectException: 拒绝连接

        at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.7.0_80]

        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) ~[na:1.7.0_80]

        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) ~[na:1.7.0_80]

        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) ~[na:1.7.0_80]

        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.7.0_80]

        at java.net.Socket.connect(Socket.java:579) ~[na:1.7.0_80]

        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:625) ~[na:1.7.0_80]

        at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:160) ~[na:1.7.0_80]

        at sun.net.NetworkClient.doConnect(NetworkClient.java:180) ~[na:1.7.0_80]

        at sun.net.www.http.HttpClient.openServer(HttpClient.java:432) ~[na:1.7.0_80]

        at sun.net.www.http.HttpClient.openServer(HttpClient.java:527) ~[na:1.7.0_80]

        at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264) ~[na:1.7.0_80]

        at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367) ~[na:1.7.0_80]

        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191) ~[na:1.7.0_80]

        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:933) ~[na:1.7.0_80]

        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177) ~[na:1.7.0_80]

        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1301) ~[na:1.7.0_80]

        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254) ~[na:1.7.0_80]

        at org.jasig.cas.client.util.CommonUtils.getResponseFromServer(CommonUtils.java:313) [cas-client-core-3.1.12.jar:na]

        at org.jasig.cas.client.util.CommonUtils.getResponseFromServer(CommonUtils.java:291) [cas-client-core-3.1.12.jar:na]

        at org.jasig.cas.client.validation.AbstractCasProtocolUrlBasedTicketValidator.retrieveResponseFromServer(AbstractCasProtocolUrlBasedTicketValidator.java:32) [cas-client-core-3.1.12.jar:na]

        at org.jasig.cas.client.validation.AbstractUrlBasedTicketValidator.validate(AbstractUrlBasedTicketValidator.java:187) [cas-client-core-3.1.12.jar:na]

        at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:164) [cas-client-core-3.1.12.jar:na]

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.68]

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.68]

        at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:102) [cas-client-core-3.1.12.jar:na]

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.68]

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.68]

        at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:65) [cas-client-core-3.1.12.jar:na]

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.68]

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.68]

        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]

        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.68]

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.68]

        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [catalina.jar:7.0.68]

        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.68]

        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) [catalina.jar:7.0.68]

        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) [catalina.jar:7.0.68]

        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina.jar:7.0.68]

        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) [catalina.jar:7.0.68]

        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) [catalina.jar:7.0.68]

        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) [catalina.jar:7.0.68]

        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) [tomcat-coyote.jar:7.0.68]

        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) [tomcat-coyote.jar:7.0.68]

        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) [tomcat-coyote.jar:7.0.68]

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_80]

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_80]

        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-coyote.jar:7.0.68]

        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80]

找了很久也找不到是什么原因，最后换了一种链接方式后问题才得以解决。估计这是个bug。

修改org.jasig.cas.client.util.CommonUtils类的public static String getResponseFromServer(final URL constructedUrl, final HostnameVerifier hostnameVerifier, final String encoding) 方法。

将原有的

public static String getResponseFromServer(final URL constructedUrl, final HostnameVerifier hostnameVerifier, final String encoding) {

        URLConnection conn = null;

        try {

        conn = constructedUrl.openConnection();

        if (conn instanceof HttpsURLConnection) {

            ((HttpsURLConnection)conn).setHostnameVerifier(hostnameVerifier);

        }

        final BufferedReader in;

        if (CommonUtils.isEmpty(encoding)) {

            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

        } else {

            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), encoding));

        }

        String line;

        final StringBuilder stringBuffer = new StringBuilder(255);

        while ((line = in.readLine()) != null) {

            stringBuffer.append(line);

            stringBuffer.append("\n");

        }

        return stringBuffer.toString();

    } catch (final Exception e) {

        LOG.error(e.getMessage(), e);

        throw new RuntimeException(e);

    } finally {

        if (conn != null && conn instanceof HttpURLConnection) {

            ((HttpURLConnection)conn).disconnect();

        }

    }

}

cas客户端作如下修改

  • 添加远程连接类：
public class HttpRemote {

    /**

     * 以Post方法访问

     * @param url 请求地址

     * @param argsMap 携带的参数

     * @return String 返回结果

     * @throws Exception

     */

    public static String POSTMethod(String url, Map<String, Object> argsMap) throws Exception {

        byte[] dataByte = null;

        // 创建HttpClientBuilder

        HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();

        // HttpClient

        CloseableHttpClient httpClient = httpClientBuilder.build();

        HttpPost httpPost = new HttpPost(url);

        // 设置参数

        UrlEncodedFormEntity encodedFormEntity = new UrlEncodedFormEntity(setHttpParams(argsMap), "UTF-8");

        httpPost.setEntity(encodedFormEntity);

        // 执行请求

        HttpResponse httpResponse = httpClient.execute(httpPost);

        // 获取返回的数据

        HttpEntity httpEntity = httpResponse.getEntity();

        if (httpEntity != null) {

            byte[] responseBytes = getData(httpEntity);

            dataByte = responseBytes;

            httpPost.abort();

        }

        // 将字节数组转换成为字符串

        String result = bytesToString(dataByte);

        return result;

    }

}
  • 将getResponseFromServer方法修改为：
public static String getResponseFromServer(final URL constructedUrl, final HostnameVerifier hostnameVerifier, final String encoding) {

    URLConnection conn = null;

    try {

//            conn = constructedUrl.openConnection();

//            if (conn instanceof HttpsURLConnection) {

//                ((HttpsURLConnection)conn).setHostnameVerifier(hostnameVerifier);

//            }

//            final BufferedReader in;

//

//            if (CommonUtils.isEmpty(encoding)) {

//                in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

//            } else {

//                in = new BufferedReader(new InputStreamReader(conn.getInputStream(), encoding));

//            }

//

//            String line;

        final StringBuilder stringBuffer = new StringBuilder(255);

//

//            while ((line = in.readLine()) != null) {

//                stringBuffer.append(line);

//                stringBuffer.append("\n");

//            }

        stringBuffer.append(HttpRemote.POSTMethod(constructedUrl.toString(),null));

        return stringBuffer.toString();

    } catch (final Exception e) {

        LOG.error(e.getMessage(), e);

        throw new RuntimeException(e);

    } finally {

        if (conn != null && conn instanceof HttpURLConnection) {

            ((HttpURLConnection)conn).disconnect();

        }

    }

}

重新打包重启即可。

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