Brap 远程访问调用 和Spring整合（三）

??? Brap和Spring整合的学习，当需要验证时必须实现AuthenticationProvider接口中相关的方法：

public interface AuthorizationProvider {    /**     * The authorization call. Is made from the <code>ProxyServlet</code>     * after an incoming invocation request is authenticated, and before the     * method is invoked on the exposed service.     *     * If a successful auhtorization is made, true is returned.     *     * Normally the <code>AuthenticationContext#getPrincipal()</code> method is consulted     * to retrieve the principal, so that the principal and the invocationRequest     * can be matched.     */    void authorize(InvocationRequest invocationRequest) throws AuthorizationFailedException;}

??在Brap中提供的权限授权供应认证器（AuthorizationProvider）：

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AuthenticationNotRequiredAuthenticator：权限不需要认证的处理器。

SingleUsernamePasswordAuthenticator：单用户权限认证处理器。

DatabaseUsernamePasswordAuthenticator：数据库认证处理器。

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在Brap中提供的权限认证处理提供者（AuthenticationProvider）：

AuthenticationNotRequiredAuthorizer：不需要认证。

AuthenticationRequiredAuthorizer：需要认证。

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服务接口：

package com.easyway.brap.spring.auth;/** * 服务端的接口 * @author longgangbai * */public interface HelloService {    public String sayHello(String name);}

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?服务接口的实现：

package com.easyway.brap.spring.auth;import java.io.Serializable;import no.tornado.brap.auth.AnonymousPrincipal;import no.tornado.brap.auth.AuthenticationContext;import no.tornado.brap.common.UsernamePasswordPrincipal;/** * 服务端的接口的实现 * @author longgangbai * */public class HelloServiceImpl  implements HelloService{ /**  * 服务端的验证方法的实现  */ public String sayHello(String name) {    //获取验证信息        Serializable principal = AuthenticationContext.getPrincipal();        //验证信息        if (principal instanceof UsernamePasswordPrincipal) {            UsernamePasswordPrincipal upp = (UsernamePasswordPrincipal) AuthenticationContext.getPrincipal();            return "Hello there, " + name + ", your username is " + upp.getUsername() + " and your password is " + upp.getPassword();        //匿名验证        } else if (principal instanceof AnonymousPrincipal) {            return "Hello there, " + name + ", you are authenticated anonymously.";        } else {            return "Hello there, " + name;        }    }}

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Spring配置如下：

<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">  <!-- 所要 暴露的服务-->  <bean id="helloService" />      </property>      <property name="authorizationProvider">       <ref bean="authorizationProvider"/>      </property>  </bean>      </beans>

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web.xml配置：

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"><!-- Spring的配置信息 -->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath*:applicationContext.xml</param-value>    </context-param>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>     <!-- 远程服务对应的Spring --><servlet><servlet-name>helloService</servlet-name><servlet-class>no.tornado.brap.spring.SpringProxyServlet</servlet-class>        <init-param>            <param-name>beanName</param-name>            <param-value>helloRemoteService</param-value>        </init-param>        <load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>helloService</servlet-name><url-pattern>/remoting/helloService</url-pattern></servlet-mapping></web-app>

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客服端实现：

package com.easyway.brap.spring.auth;import no.tornado.brap.client.ServiceProxyFactory;import no.tornado.brap.common.UsernamePasswordPrincipal;/** * 服务器客户端的 * @author longgangbai * */public class HelloRemoteServiceClient {public static void main(String[] args) {UsernamePasswordPrincipal upp = new UsernamePasswordPrincipal("john", "secret");HelloService service = ServiceProxyFactory.createProxy(HelloService.class, "http://localhost:8080/BrapSpring/remoting/helloService", upp);System.out.println(service.sayHello("Hello"));}}

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