ssh學習（一）struts-spring整合

使用 Spring 的 ContextLoaderPlugin 爲 Struts 的 ActionServlet 裝載 Spring 應用程序環境。在struts-config.xml中加入以下代碼：

	<plug-in
		className="org.springframework.web.struts.ContextLoaderPlugIn">
		<set-property property="contextConfigLocation"
			value="classpath*:modules/**/struts-spring-conf/*.xml" />
	</plug-in>

1. Action 中，使用IOC 獲得服務，配置struts-config.xml

	<!-- 一個Action 注意其type Spring 代理類 -->
	<action path="/searchSubmit"
		type="org.springframework.web.struts.DelegatingActionProxy"
		input="/searchEntry.do" validate="true" name="searchForm">
		<forward name="success" path="/WEB-INF/pages/detail.jsp" />
		<forward name="failure" path="/WEB-INF/pages/search.jsp" />
	</action>

2. Spring 配置文件中註冊該動作

	<bean id="bookService"
		class="ca.nexcel.books.business.BookServiceImpl" />
	<bean name="/searchSubmit"
		class="ca.nexcel.books.actions.SearchSubmit">
		<property name="bookService">
			<ref bean="bookService" />
		</property>
	</bean>

3. 寫具有 JavaBean 屬性的 Struts 動作

public class SearchSubmit extends Action {
	// 一個Service屬性
	private BookService bookService;

	// getter...
	public BookService getBookService() {
		return bookService;
	}

	// setter...
	public void setBookService(BookService bookService) {
		this.bookService = bookService;
	}

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws IOException, ServletException {
		// 調用bookService,不需要new
		Book book = getBookService().read(isbn.trim());
	}
}