String2与spring3的巧妙结合实现零配置
1、配置web.xml
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<!-- springListener --><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><!-- struts2Filter --><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><filter-mapping><filter-name>struts2</filter-name><url-pattern>*.action</url-pattern></filter-mapping>?
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2、spring配置，使用全注解配置
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<!-- 注解配置 --><context:annotation-config></context:annotation-config><context:component-scan base-package="com.example"></context:component-scan>?
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3、struts2的配置,这部分是关键
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<constant name="struts.objectFactory" value="spring"></constant><!--允许使用*/*的配置--><constant name="struts.enable.SlashesInActionNames" value="true"></constant><package name="restful" extends="struts-default"><action name="*/*" method="{2}"><result name="success">${forward_page}</result><result name="redirect" type="redirect">${redirect_page}</result></action></package>?
4、BaseAction,配合struts.xml用来控制页面跳转，传递属性
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public class BaseAction{ public static final String SUCCESS = "success"; public static final String REDIRECT = "redirect"; private String forward_page; private String redirect_page; //转发 public String forward(String viewPath) { forward_page = viewPath; return SUCCESS; } //重定向 public String redirect(String viewPath) { redirect_page = viewPath; return REDIRECT; } //添加属性 public BaseAction addAttr(String key, Object value) { Map<String, Object> request = (Map<String, Object>) ActionContext .getContext().get("request"); request.put(key, value); return this; } public String getForward_page() { return forward_page; } public String getRedirect_page() { return redirect_page; }}??
5、自定义的Action
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@Controllerpublic class AccountAction extends BaseAction{ public String add() { //转发 return forward("/add.jsp"); } public String get() { //重定向 return redirect("get.jsp"); } public String list() { @SuppressWarnings("unchecked") List list = new ArrayList(); int count = 10; // 添加属性及跳转 return addAttr("list", list).addAttr("count", count).forward( "/list.jsp"); }}?这样的好处就是可以省去一切struts2中Action的配置，当我们访问account/add.action时，自动调用AccountAction.add()方法。
如果我们想调用TestAction中的delete()方法，可以直接通过test/delete.action去调用。
在这里，我们采用的约定大于配置，如xxx/yyy.action,xxx对应Action的名字，此处对应xxxAction,yyy对应方法名.
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