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("
");
}
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("
");
// }
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。