1.接上面文章的内容initActionMapping();该方法我会详细讲解

private void initActionMapping() {		actionMapping = new ActionMapping(Config.getRoutes(), Config.getInterceptors());		actionMapping.buildActionMapping();	}

ActionMapping(Routes routes, Interceptors interceptors) {		this.routes = routes;		this.interceptors = interceptors;	}

2.上面的actionMapping.buildActionMapping();我会详细介绍

private final Map
    
      mapping = new HashMap
     
      ();
     
    

void buildActionMapping() {		mapping.clear();		Set
    
      excludedMethodName = buildExcludedMethodName();		InterceptorBuilder interceptorBuilder = new InterceptorBuilder();		Interceptor[] defaultInters = interceptors.getInterceptorArray();		interceptorBuilder.addToInterceptorsMap(defaultInters);		for (Entry
     
      > entry : routes.getEntrySet()) {			Class
       controllerClass = entry.getValue();			Interceptor[] controllerInters = interceptorBuilder.buildControllerInterceptors(controllerClass);			Method[] methods = controllerClass.getMethods();			for (Method method : methods) {				String methodName = method.getName();				if (!excludedMethodName.contains(methodName) && method.getParameterTypes().length == 0) {					Interceptor[] methodInters = interceptorBuilder.buildMethodInterceptors(method);					Interceptor[] actionInters = interceptorBuilder.buildActionInterceptors(defaultInters, controllerInters, controllerClass, methodInters, method);					String controllerKey = entry.getKey();										ActionKey ak = method.getAnnotation(ActionKey.class);					if (ak != null) {						String actionKey = ak.value().trim();						if ("".equals(actionKey))							throw new IllegalArgumentException(controllerClass.getName() + "." + methodName + "(): The argument of ActionKey can not be blank.");												if (!actionKey.startsWith(SLASH))							actionKey = SLASH + actionKey;												if (mapping.containsKey(actionKey)) {							warnning(actionKey, controllerClass, method);							continue;						}												Action action = new Action(controllerKey, actionKey, controllerClass, method, methodName, actionInters, routes.getViewPath(controllerKey));						mapping.put(actionKey, action);					}					else if (methodName.equals("index")) {						String actionKey = controllerKey;												Action action = new Action(controllerKey, actionKey, controllerClass, method, methodName, actionInters, routes.getViewPath(controllerKey));						action = mapping.put(actionKey, action);												if (action != null) {							warnning(action.getActionKey(), action.getControllerClass(), action.getMethod());						}					}					else {						String actionKey = controllerKey.equals(SLASH) ? SLASH + methodName : controllerKey + SLASH + methodName;												if (mapping.containsKey(actionKey)) {							warnning(actionKey, controllerClass, method);							continue;						}												Action action = new Action(controllerKey, actionKey, controllerClass, method, methodName, actionInters, routes.getViewPath(controllerKey));						mapping.put(actionKey, action);					}				}			}		}				// support url = controllerKey + urlParas with "/" of controllerKey		Action actoin = mapping.get("/");		if (actoin != null)			mapping.put("", actoin);	}
     
    

3.上面的类比较长,我会结合我的例子来讲

第一个方法buildExcludedMethodName,代码很简单,就是将Controller类中方法无参数的取出来放到excludeMethodName,主要用在下面的判断,我这里简要介绍,就是我们继承Controller的自己类中的方法取出来

private Set
    
      buildExcludedMethodName() {		Set
     
       excludedMethodName = new HashSet
      
       ();		Method[] methods = Controller.class.getMethods();		for (Method m : methods) {			if (m.getParameterTypes().length == 0)				excludedMethodName.add(m.getName());		}		return excludedMethodName;	}
      
     
    

4.上面两段代码非常简单,自己看看就明白啦

InterceptorBuilder interceptorBuilder = new InterceptorBuilder(); Interceptor[] defaultInters = interceptors.getInterceptorArray(); 5.interceptorBuilder.addToInterceptorsMap(defaultInters);这个代码我详细讲一下

@SuppressWarnings("unchecked")	void addToInterceptorsMap(Interceptor[] defaultInters) {		for (Interceptor inter : defaultInters)			intersMap.put((Class
    
     )inter.getClass(), inter);	}
    

defaultInters的类就是全局的拦截器,对所有action都是有效的,就是我们下面配置的

/**	 * 配置全局拦截器	 */	public void configInterceptor(Interceptors me) {		me.add(new BlogInterceptor1());		me.add(new BlogInterceptor2());	}

6.routes.getEntrySet()就是我前面配置的, 在我的例子里面就是就是下面map.put中

private final Map
    
     > map = new HashMap
     
      >();public Set
      
       
        >> getEntrySet() {		return map.entrySet();	}
       
      
     
    

map.put("/", "CommonController.class");

map.put("/blog","BlogController.class")

7.Class<? extends Controller> controllerClass = entry.getValue(); 获取到CommonController.class 8.interceptorBuilder.buildControllerInterceptors(controllerClass);这段代码就是相当于

/**	 * Build interceptors of Controller	 */	Interceptor[] buildControllerInterceptors(Class
     controllerClass) {		Before before = controllerClass.getAnnotation(Before.class);		return before != null ? createInterceptors(before) : NULL_INTERCEPTOR_ARRAY;	}	/**	 * Create interceptors with Annotation of Before. Singleton version.	 */	private Interceptor[] createInterceptors(Before beforeAnnotation) {		Interceptor[] result = null;		@SuppressWarnings("unchecked")		Class
    
     [] interceptorClasses = (Class
     
      []) beforeAnnotation.value();		if (interceptorClasses != null && interceptorClasses.length > 0) {			result = new Interceptor[interceptorClasses.length];			for (int i=0; i
     
    

相当于获取类上面的Before的注解,并且放入到 intersMap中 controllerInters相当于自定义Controller上面的注解信息,BlogInterceptor3.class和BlogInterceptor4.class private Map<Class<Interceptor>, Interceptor> intersMap = new HashMap<Class<Interceptor>, Interceptor>();

/** * BlogController * 注意：在实际项目中业务与sql需要写在Model中，此demo仅为示意,故将sql写在了Controller中 */@Before({BlogInterceptor3.class,BlogInterceptor4.class})public class BlogController extends Controller {

今天就介绍到这里,明天继续接下来的代码,我会详细的讲,如果谁有问题,请留言,我会及时回复