CAS4 之集成RESTful API

由于公司的需求，需要将现有的CAS4Server 集成Restful API，网上搜了一些资料、以及官方文档，但都是CAS3的，不过CAS3和CAS4是有一些区别的，以下看具体配置吧！

CAS本身已经提供了 restlet 的集成包，如果你用的是 maven 的话直接加入,我这里的Cas-server的版本是 4.0.0:

<dependency>
<groupId>org.jasig.cas</groupId>
<artifactId>cas-server-integration-restlet</artifactId>
<version>4.0.0</version>
<type>jar</type>
</dependency>

查看POM文件：我们可以发现需要如下依赖包：

org.restlet-2.1.0.jar
org.restlet.ext.spring-2.1.0.jar
org.restlet.ext.slf4j-2.1.0.jar
org.restlet.ext.servlet-2.1.0.jar

事实上我们还需要另外一个jar包

cglib-nodep-2.1_3.jar

如果自己编译的话工程的话，对应的JAR包也会下载到本地的maven仓库中的，或者直接去 maven.restlet.org 上找。

然后再在 web.xml 中加入:

<servlet>
<servlet-name>restlet</servlet-name>
<servlet-class>org.restlet.ext.spring.RestletFrameworkServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>restlet</servlet-name>
<url-pattern>/v1/*</url-pattern>
</servlet-mapping>

这里servlet-class要看好和CAS3的配置不一样！

restlet的配置在 cas-server中已经存在在： /WEB-INF/restlet-servlet.xml文件

客户端测试：

public class Client {public static String getTicket(final String server, final String username, final String password,final String service) {notNull(server, "server must not be null");notNull(username, "username must not be null");notNull(password, "password must not be null");notNull(service, "service must not be null");return getServiceTicket(server, getTicketGrantingTicket(server, username, password), service);}/*** 取得ST* @param server* @param ticketGrantingTicket* @param service*/private static String getServiceTicket(final String server, final String ticketGrantingTicket, final String service) {if (ticketGrantingTicket == null)return null;final HttpClient client = new HttpClient();final PostMethod post = new PostMethod(server + "/" + ticketGrantingTicket);post.setRequestBody(new NameValuePair[] { new NameValuePair("service", service) });try {client.executeMethod(post);final String response = post.getResponseBodyAsString();switch (post.getStatusCode()) {case 200:return response;default:warning("Invalid response code (" + post.getStatusCode() + ") from CAS server!");info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));break;}}catch (final IOException e) {warning(e.getMessage());}finally {post.releaseConnection();}return null;}/*** @param server* @param username* @param password*/private static String getTicketGrantingTicket(final String server, final String username, final String password) {final HttpClient client = new HttpClient();final PostMethod post = new PostMethod(server);post.setRequestBody(new NameValuePair[] { new NameValuePair("username", username),new NameValuePair("password", password) });try {client.executeMethod(post);final String response = post.getResponseBodyAsString();info("TGT="+response);switch (post.getStatusCode()) {case 201: {final Matcher matcher = Pattern.compile(".*action=\".*/(.*?)\".*").matcher(response);if (matcher.matches())return matcher.group(1);warning("Successful ticket granting request, but no ticket found!");info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));break;}default:warning("Invalid response code (" + post.getStatusCode() + ") from CAS server!");info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));break;}}catch (final IOException e) {warning(e.getMessage());}finally {post.releaseConnection();}return null;}private static void ticketValidate(String serverValidate, String serviceTicket, String service) {notNull(serviceTicket, "paramter 'serviceTicket' is not null");notNull(service, "paramter 'service' is not null");final HttpClient client = new HttpClient();GetMethod post = null;try {post = new GetMethod(serverValidate+"?"+"ticket="+serviceTicket+"&service="+URLEncoder.encode(service, "UTF-8"));client.executeMethod(post);final String response = post.getResponseBodyAsString();info(response);switch (post.getStatusCode()) {case 200: {info("成功取得用户数据");}default: {}}} catch (Exception e) {warning(e.getMessage());} finally {//释放资源post.releaseConnection();}}private static void notNull(final Object object, final String message) {if (object == null)throw new IllegalArgumentException(message);}public static void main(final String[] args) throws Exception {final String server = "http://localhost:8080/CASServer/v1/tickets";final String username = "username";final String password = "username";final String service = "http://localhost:8080/service";  //随意写final String proxyValidate = "http://localhost:8080/<span style="font-family: Arial, Helvetica, sans-serif;">CASServer</span>/proxyValidate";ticketValidate(proxyValidate, getTicket(server, username, password, service), service);}private static void warning(String msg) {System.out.println(msg);}private static void info(String msg) {System.out.println(msg);}}

返回数据：

<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'><cas:authenticationSuccess><cas:user>jy</cas:user></cas:authenticationSuccess>
</cas:serviceResponse>

cglib-nodep-2.1_3.jar

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