问如何集成Spring Security和GWT？

EN

<?xml version="1.0" encoding="UTF-8"?>
<global-method-security secured-annotations="enabled"
    jsr250-annotations="disabled" />
<http auto-config="true">
    <!-- <intercept-url pattern="/**/*.rpc" access="ROLE_USER" /> -->
    <intercept-url pattern="/gwt/**" access="ROLE_USER" />
    <intercept-url pattern="/**" access="IS_AUTHENTICATED_ANONYMOUSLY" />
</http>
<authentication-provider>
    <user-service>
        <user name="rod" password="koala"
            authorities="ROLE_SUPERVISOR, ROLE_USER, ROLE_TELLER" />
        <user name="dianne" password="emu" authorities="ROLE_USER,ROLE_TELLER" />
        <user name="scott" password="wombat" authorities="ROLE_USER" />
        <user name="peter" password="opal" authorities="ROLE_USER" />
    </user-service>
</authentication-provider>
<beans:bean id="greetService" class="com.ct.test.server.GreetingServiceImpl" />

<?xml version="1.0" encoding="UTF-8"?>
<web-app>
<!-- Default page to serve -->
<welcome-file-list>
    <welcome-file>Spring_test.html</welcome-file>
</welcome-file-list>
<!--  Spring related configuration  -->
<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>
<!-- Initialise the Spring MVC DispatcherServlet -->
<servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<!-- Map the DispatcherServlet to only intercept RPC requests -->
<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/spring_test/greet.rpc</url-pattern>
    <!--
        <url-pattern>/org.example.gwtwisdom.GwtWisdom/services/*</url-pattern>
    -->
</servlet-mapping>
<servlet>
    <servlet-name>greetServlet</servlet-name>
    <servlet-class>com.ct.test.server.GreetingServiceImpl</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>greetServlet</servlet-name>
    <url-pattern>/spring_test/greet.rpc</url-pattern>
</servlet-mapping>
<!-- Spring security -->
<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<?xml version="1.0" encoding="UTF-8"?>
<!-- The application context definition for the DispatcherServlet -->
<bean id="urlMapping" class="com.gwtincubator.security.server.GWTSecuredHandler">
    <property name="mappings">
        <map>
            <entry key="/spring_test/greet.rpc" value-ref="greetService" />
        </map>
    </property>
</bean>