jax-rs jax-ws

讓我們假設一家企業(yè)正在一個集中式系統(tǒng)中維護用戶身份驗證詳細信息。 我們需要創(chuàng)建一個AuthenticationService，它將獲取憑據(jù)，對其進行驗證并返回狀態(tài)。 其余的應用程序將使用AuthenticationService對用戶進行身份驗證。

創(chuàng)建AuthenticationService接口，如下所示：

package com.sivalabs.caas.services; import javax.jws.WebService;import com.sivalabs.caas.domain.AuthenticationStatus; import com.sivalabs.caas.domain.Credentials; import com.sivalabs.caas.exceptions.AuthenticationServiceException;@WebService public interface AuthenticationService { public AuthenticationStatus authenticate(Credentials credentials) throws AuthenticationServiceException; }package com.sivalabs.caas.domain; /*** @author siva**/ public class Credentials {private String userName;private String password;public Credentials() {}public Credentials(String userName, String password) {super();this.userName = userName;this.password = password;}//setters and getters}package com.sivalabs.caas.domain;/*** @author siva**/ public class AuthenticationStatus {private String statusMessage;private boolean success;//setters and getters}package com.sivalabs.caas.exceptions;/*** @author siva**/ public class AuthenticationServiceException extends RuntimeException {private static final long serialVersionUID = 1L;public AuthenticationServiceException(){}public AuthenticationServiceException(String msg){super(msg);} }

現(xiàn)在讓我們實現(xiàn)AuthenticationService。

package com.sivalabs.caas.services;import java.util.HashMap; import java.util.Map;import javax.jws.WebService;import com.sivalabs.caas.domain.AuthenticationStatus; import com.sivalabs.caas.domain.Credentials; import com.sivalabs.caas.exceptions.AuthenticationServiceException;/*** @author siva**/ @WebService(endpointInterface="com.sivalabs.caas.services.AuthenticationService",serviceName="AuthenticationService", targetNamespace="http://sivalabs.blogspot.com/services/AuthenticationService") public class AuthenticationServiceImpl implements AuthenticationService {private static final Map<string, string> CREDENTIALS = new HashMap<string, string>();static{CREDENTIALS.put("admin", "admin");CREDENTIALS.put("test", "test"); }@Overridepublic AuthenticationStatus authenticate(Credentials credentials) throws AuthenticationServiceException{if(credentials == null){throw new AuthenticationServiceException("Credentials is null");}AuthenticationStatus authenticationStatus = new AuthenticationStatus();String userName = credentials.getUserName();String password = credentials.getPassword();if(userName==null || userName.trim().length()==0 || password==null || password.trim().length()==0){authenticationStatus.setStatusMessage("UserName and Password should not be blank");authenticationStatus.setSuccess(false);}else{if(CREDENTIALS.containsKey(userName) && password.equals(CREDENTIALS.get(userName))){authenticationStatus.setStatusMessage("Valid UserName and Password");authenticationStatus.setSuccess(true);}else{authenticationStatus.setStatusMessage("Invalid UserName and Password");authenticationStatus.setSuccess(false);}}return authenticationStatus;} }

為了簡單起見，我們在此根據(jù)存儲在HashMap中的靜態(tài)數(shù)據(jù)檢查憑據(jù)。 在實際的應用程序中，將根據(jù)數(shù)據(jù)庫進行此檢查。

現(xiàn)在，我們將發(fā)布WebService。

package com.sivalabs.caas.publisher;import javax.xml.ws.Endpoint;import com.sivalabs.caas.services.AuthenticationServiceImpl;public class EndpointPublisher {public static void main(String[] args){Endpoint.publish("http://localhost:8080/CAAS/services/AuthenticationService", new AuthenticationServiceImpl());}}

運行此獨立的類以發(fā)布AuthenticationService。

要檢查服務是否已成功發(fā)布，請將瀏覽器指向URL http：// localhost：8080 / CAAS / services / AuthenticationService？wsdl。 如果該服務成功發(fā)布，您將看到WSDL內容。

現(xiàn)在，讓我們創(chuàng)建一個獨立測試客戶端來測試Web服務。

package com.sivalabs.caas.client;import java.net.URL;import javax.xml.namespace.QName; import javax.xml.ws.Service;import com.sivalabs.caas.domain.AuthenticationStatus; import com.sivalabs.caas.domain.Credentials; import com.sivalabs.caas.services.AuthenticationService;/*** @author siva**/ public class StandaloneClient {public static void main(String[] args) throws Exception{URL wsdlUrl = new URL("http://localhost:8080/CAAS/services/AuthenticationService?wsdl");QName qName = new QName("http://sivalabs.blogspot.com/services/AuthenticationService", "AuthenticationService");Service service = Service.create(wsdlUrl,qName);AuthenticationService port = service.getPort(AuthenticationService.class);Credentials credentials=new Credentials();credentials.setUserName("admin1");credentials.setPassword("admin");AuthenticationStatus authenticationStatus = port.authenticate(credentials);System.out.println(authenticationStatus.getStatusMessage());credentials.setUserName("admin");credentials.setPassword("admin");authenticationStatus = port.authenticate(credentials);System.out.println(authenticationStatus.getStatusMessage());}}

不用我們自己編寫StandaloneClient，我們可以使用wsimport命令行工具生成Client。

wsimport工具在JDK / bin目錄中。

轉到項目的src目錄，然后執(zhí)行以下命令。

wsimport -keep -p com.sivalabs.caas.client http：// localhost：8080 / CAAS / services / AuthenticationService？wsdl

它將在com.sivalabs.caas.client軟件包中生成以下Java和類文件。

Authenticate.java
AuthenticateResponse.java
AuthenticationService_Service.java AuthenticationService.java AuthenticationServiceException_Exception.java AuthenticationServiceException.java AuthenticationStatus.java Credentials.java ObjectFactory.java 包信息.java

現(xiàn)在，您可以使用生成的Java文件來測試服務。

public static void main(String[] args) throws Exception {AuthenticationService_Service service = new AuthenticationService_Service();com.sivalabs.caas.client.AuthenticationService authenticationServiceImplPort = service.getAuthenticationServiceImplPort();com.sivalabs.caas.client.Credentials credentials = new com.sivalabs.caas.client.Credentials();credentials.setUserName("admin1");credentials.setPassword("admin");com.sivalabs.caas.client.AuthenticationStatus authenticationStatus = authenticationServiceImplPort.authenticate(credentials);System.out.println(authenticationStatus.getStatusMessage());credentials.setUserName("admin");credentials.setPassword("admin");authenticationStatus = authenticationServiceImplPort.authenticate(credentials);System.out.println(authenticationStatus.getStatusMessage()); }

現(xiàn)在，我們將看到如何在Tomcat服務器上部署JAX-WS WebService。

我們將在apache-tomcat-6.0.32上部署在http://sivalabs.blogspot.com/2011/09/developing-webservices-using-jax-ws.html中開發(fā)的AuthenticationService。

要部署我們的AuthenticationService，我們需要添加以下配置。

1.web.xml

<web-app><listener><listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class></listener><servlet><servlet-name>authenticationService</servlet-name><servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>authenticationService</servlet-name><url-pattern>/services/AuthenticationService</url-pattern></servlet-mapping> </web-app>

2.創(chuàng)建一個新文件WEB-INF / sun-jax-ws.xml

<?xml?version="1.0"?encoding="UTF-8"?> <endpointsxmlns="http://java.sun.com/xml/ns/jax-ws/ri/runtime"version="2.0"><endpointname="AuthenticationService"implementation="com.sivalabs.caas.services.AuthenticationServiceImpl"url-pattern="/services/AuthenticationService"/></endpoints>

3.從http://jax-ws.java.net/下載JAX-WS參考實現(xiàn)。

將所有jar文件從jaxws-ri / lib文件夾復制到WEB-INF / lib。

現(xiàn)在，將應用程序部署在Tomcat服務器上。
您不需要像使用EndpointPublisher那樣由我們自己發(fā)布服務。
Tomcat啟動并運行后，請在http：// localhost：8080 / CAAS / services / AuthenticationService？wsdl中查看生成的wsdl。

現(xiàn)在，如果您使用獨立客戶端測試AuthenticationService，它將可以正常工作。

public static void testAuthenticationService()throws Exception {URL wsdlUrl = new URL("http://localhost:8080/CAAS/services/AuthenticationService?wsdl");QName qName = new QName("http://sivalabs.blogspot.com/services/AuthenticationService", "AuthenticationService");Service service = Service.create(wsdlUrl,qName);AuthenticationService port = service.getPort(AuthenticationService.class);Credentials credentials=new Credentials();credentials.setUserName("admin");credentials.setPassword("admin");AuthenticationStatus authenticationStatus = port.authenticate(credentials);System.out.println(authenticationStatus.getStatusMessage()); }

但是，如果嘗試使用wsimport工具生成的客戶端代碼進行測試，請確保在客戶端類路徑中沒有jax-ws-ri jar。

否則，您將得到以下錯誤：

Exception in thread "main" java.lang.NoSuchMethodError: javax.xml.ws.WebFault.messageName()Ljava/lang/String;at com.sun.xml.ws.model.RuntimeModeler.processExceptions(RuntimeModeler.java:1162)at com.sun.xml.ws.model.RuntimeModeler.processDocWrappedMethod(RuntimeModeler.java:898)

參考： “ 我的實驗”博客上的 JCG合作伙伴 Siva Reddy提供了使用JAX-WS開發(fā)WebServices和在Tomcat-6上部署JAX-WS WebService的信息 。

翻譯自: https://www.javacodegeeks.com/2012/03/web-services-with-jax-ws-on-tomcat.html

jax-rs jax-ws

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