Spring 2 遠程服務統一封裝：RMI、Hessian、Burlap、HTTP Invoker 完整配置指南

Spring Remote 核心價值

Spring 2 org.springframework.remoting 提供統一抽象，讓業務介面無感知切換底層協議：RMI、Hessian/Burlap（HTTP 二進制/XML）、HTTP Invoker（Java 序列化）。

共享介面與實現

public interface IBookService { Book getById(String id); }
public class Book { public String name, id, author; }
public class BookService implements IBookService {
    public Book getById(String id) { return BookStore.getById(id); }
}
// 客戶端
public class BookQueryService {
    private IBookService bookService;
    public void setAccountService(IBookService s) { this.bookService = s; }
    public Book getBookById(String id) { return bookService.getById(id); }
}

1. RMI 服務

服務端

<bean id="bookService" class="com.xmatthew.spring.remote.BookService"/>
<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
    <property name="serviceName" value="bookService"/>
    <property name="service" ref="bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
    <property name="registryPort" value="1800"/>
</bean>

客戶端

<bean class="com.xmatthew.spring.remote.client.BookQueryService">
    <property name="bookService" ref="bookService"/>
</bean>
<bean id="bookService" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
    <property name="serviceUrl" value="rmi://localhost:1800/bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
</bean>

2. Hessian（HTTP 二進制）

需在 web.xml 配置 DispatcherServlet 映射 /remoting/*。

服務端

<bean name="/bookService" class="org.springframework.remoting.caucho.HessianServiceExporter">
    <property name="service" ref="bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
</bean>

客戶端

<bean id="bookService" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
    <property name="serviceUrl" value="https://localhost:8080/remoting/bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
</bean>

3. Burlap（HTTP XML）

配置同 Hessian，僅將類名替換：
BurlapServiceExporter / BurlapProxyFactoryBean。

4. HTTP Invoker（Java 序列化）

同樣需 DispatcherServlet。

服務端

<bean name="/bookService" class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
    <property name="service" ref="bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
</bean>

客戶端

<bean id="bookService" class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean">
    <property name="serviceUrl" value="https://localhost:8080/remoting/bookService"/>
    <property name="serviceInterface" value="com.xmatthew.spring.remote.IBookService"/>
</bean>

協議選型建議