实习笔记4

spring webservice

• Remote Method Invocation (RMI). 通过使用 RmiProxyFactoryBean 和 RmiServiceExporter 接口,spring支持两种传统的RMI(java.rmi.Remote 和 java.rmi.RemoteException) 和 透明远程通过RMI invokers (任何java接口).
• Spring’s HTTP invoker. 提供特别策略 通过 HTTP 使java持久化, 支持任何java接口 (类似RMI invoker). 相应的类是 HttpInvokerProxyFactoryBean 和HttpInvokerServiceExporter.
• Hessian. 通过 HessianProxyFactoryBean 和HessianServiceExporter 使用轻量级二进制 HTTP为基础的协议 （provided by Caucho.）
• Burlap.  Caucho’s XML为基础的用来替代 Hessian. 相应类是 BurlapProxyFactoryBean 和 BurlapServiceExporter.
• JAX-WS. 远程支持通过 JAX-WS (比如JAX-RPC, 在 Java EE 5 and Java 6被介绍).
• JMS. JMS作为底层协议通过 JmsInvokerServiceExporter 和JmsInvokerProxyFactoryBean .
• AMQP.  AMQP作为底层协议在spring AMQP project.

下面是spring例子：

public class Account implements Serializable{    private String name;    public String getName(){        return name;    }    public void setName(String name) {        this.name = name;    }}

public interface AccountService {    public void insertAccount(Account account);    public List<Account> getAccounts(String name);}

// the implementation doing nothing at the momentpublic class AccountServiceImpl implements AccountService {    public void insertAccount(Account acc) {        // do something...    }    public List<Account> getAccounts(String name) {        // do something...    }}

<bean id="accountService" class="example.AccountServiceImpl">    <!-- any additional properties, maybe a DAO? --></bean>

Spring RMI

与EJB RMI区别：对安全上下文传播或远程事务传播的支持没有标准的支持，你可以自己插入插入安全框架或自定义安全凭据通过spring提供的接口

通过 RmiServiceExporter获取RMI

<bean class="org.springframework.remoting.rmi.RmiServiceExporter">    <!-- does not necessarily have to be the same name as the bean to be exported -->    <property name="serviceName" value="AccountService"/>    <property name="service" ref="accountService"/>    <property name="serviceInterface" value="example.AccountService"/>    <!-- defaults to 1099 -->    <property name="registryPort" value="1199"/></bean>

服务将被绑定在 'rmi://HOST:1199/AccountService'. 

servicePort 被省略(默认 0). 将会有匿名端口被用来通信.

连接服务的客户端：

public class SimpleObject {    private AccountService accountService;    public void setAccountService(AccountService accountService) {        this.accountService = accountService;    }    // additional methods using the accountService}

<bean class="example.SimpleObject">    <property name="accountService" ref="accountService"/></bean><bean id="accountService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">    <property name="serviceUrl" value="rmi://HOST:1199/AccountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

 Hessian or Burlap 调用服务通过 HTTP

 'web.xml'

<servlet>    <servlet-name>remoting</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <load-on-startup>1</load-on-startup></servlet><servlet-mapping>    <servlet-name>remoting</servlet-name>    <url-pattern>/remoting/*</url-pattern></servlet-mapping>

第一、'WEB-INF' 下创建 'remoting-servlet.xml' 

<bean id="accountService" class="example.AccountServiceImpl">    <!-- any additional properties, maybe a DAO? --></bean><bean name="/AccountService" class="org.springframework.remoting.caucho.HessianServiceExporter">    <property name="service" ref="accountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

http://HOST:8080/remoting/AccountService'.可以访问到结果

第二、'WEB-INF/applicationContext.xml'

<servlet>    <servlet-name>accountExporter</servlet-name>    <servlet-class>org.springframework.web.context.support.HttpRequestHandlerServlet</servlet-class></servlet><servlet-mapping>    <servlet-name>accountExporter</servlet-name>    <url-pattern>/remoting/AccountService</url-pattern></servlet-mapping>

客户端调用：

<bean class="example.SimpleObject">    <property name="accountService" ref="accountService"/></bean><bean id="accountService" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">    <property name="serviceUrl" value="http://remotehost:8080/remoting/AccountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

Burlap

配置：Hessian 换成Burlap 

web.xml 里配置安全，

<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">    <property name="interceptors" ref="authorizationInterceptor"/></bean><bean id="authorizationInterceptor"        class="org.springframework.web.servlet.handler.UserRoleAuthorizationInterceptor">    <property name="authorizedRoles" value="administrator,operator"/></bean>

HTTP invokers

Spring Web MVC DispatcherServlet

<bean name="/AccountService" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">    <property name="service" ref="accountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

WEB-INF/applicationContext.xml

<bean name="accountExporter" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">    <property name="service" ref="accountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

'web.xml'

<servlet>    <servlet-name>accountExporter</servlet-name>    <servlet-class>org.springframework.web.context.support.HttpRequestHandlerServlet</servlet-class></servlet><servlet-mapping>    <servlet-name>accountExporter</servlet-name>    <url-pattern>/remoting/AccountService</url-pattern></servlet-mapping>

客户端调用

<bean id="httpInvokerProxy" class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean">    <property name="serviceUrl" value="http://remotehost:8080/remoting/AccountService"/>    <property name="serviceInterface" value="example.AccountService"/></bean>

Web services

 JAX-WS

/** * JAX-WS compliant AccountService implementation that simply delegates * to the AccountService implementation in the root web application context. * * This wrapper class is necessary because JAX-WS requires working with dedicated * endpoint classes. If an existing service needs to be exported, a wrapper that * extends SpringBeanAutowiringSupport for simple Spring bean autowiring (through * the @Autowired annotation) is the simplest JAX-WS compliant way. * * This is the class registered with the server-side JAX-WS implementation. * In the case of a Java EE 5 server, this would simply be defined as a servlet * in web.xml, with the server detecting that this is a JAX-WS endpoint and reacting * accordingly. The servlet name usually needs to match the specified WS service name. * * The web service engine manages the lifecycle of instances of this class. * Spring bean references will just be wired in here. */import org.springframework.web.context.support.SpringBeanAutowiringSupport;@WebService(serviceName="AccountService")public class AccountServiceEndpoint extends SpringBeanAutowiringSupport {    @Autowired    private AccountService biz;    @WebMethod    public void insertAccount(Account acc) {        biz.insertAccount(acc);    }    @WebMethod    public Account[] getAccounts(String name) {        return biz.getAccounts(name);    }}

JMS

package com.foo;public interface CheckingAccountService {    public void cancelAccount(Long accountId);}

package com.foo;public class SimpleCheckingAccountService implements CheckingAccountService {    public void cancelAccount(Long accountId) {        System.out.println("Cancelling account [" + accountId + "]");    }}

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd">    <bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">        <property name="brokerURL" value="tcp://ep-t43:61616"/>    </bean>    <bean id="queue" class="org.apache.activemq.command.ActiveMQQueue">        <constructor-arg value="mmm"/>    </bean></beans>

服务端

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd">    <bean id="checkingAccountService"            class="org.springframework.jms.remoting.JmsInvokerServiceExporter">        <property name="serviceInterface" value="com.foo.CheckingAccountService"/>        <property name="service">            <bean class="com.foo.SimpleCheckingAccountService"/>        </property>    </bean>    <bean class="org.springframework.jms.listener.SimpleMessageListenerContainer">        <property name="connectionFactory" ref="connectionFactory"/>        <property name="destination" ref="queue"/>        <property name="concurrentConsumers" value="3"/>        <property name="messageListener" ref="checkingAccountService"/>    </bean></beans>

客户端

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd">    <bean id="checkingAccountService"            class="org.springframework.jms.remoting.JmsInvokerProxyFactoryBean">        <property name="serviceInterface" value="com.foo.CheckingAccountService"/>        <property name="connectionFactory" ref="connectionFactory"/>        <property name="queue" ref="queue"/>    </bean></beans>

27.7 AMQP

Refer to the Spring AMQP Reference Document 'Spring Remoting with AMQP' section for more information.

 

用Spring JMS使异步消息变得简单

http://my.oschina.net/xpbug/blog/264475