我在项目中也写了一个模仿Struct的Action类，目前还不成熟，先拿出来讨论讨论。
mfaction.xml
<?xml version="1.0" encoding="GBK"?>
<thinkwide><include file="user.xml"/> <constant name="MFSys.Debug" value="true"/><constant name="MFSys.encoding" value="GB2312"/><package name="test" namespace="test/">    <action name="user" class="weaver.test.testuser" method="test">    <result name="success">testExcel.jsp</result> <result name="test">/login.jsp</result>   </action>  </package>
</thinkwide>/***************************************************************** <strong>MFActionManager动作管理类</strong>* * <p>* MFActionManager动作管理类* </p>* * @author  AndyZhang 2011* @version 0.1 * ToDo:2011-12-29***************************************************************/package weaver.action;import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;import weaver.core.MFPath;
import weaver.core.MFString;
import weaver.debug.MFDebug;
import weaver.ormapping.MFDbTypeTransfer;
import weaver.ormapping.MFReflect;public class MFActionManager {private List<String> includeFiles;private Map<String,String> configs;private MFActionItems items;private HttpServletRequest request;private HttpServletResponse response;private static String ext=".tw";private static String execute="execute";public MFActionManager(){includeFiles=new ArrayList<String>();configs=new HashMap<String, String>();//loadMain();items=new MFActionItems();}public MFActionManager(HttpServletRequest request,HttpServletResponse response){this();updateState(request,response); }public void updateState(HttpServletRequest request,HttpServletResponse response){this.request=request;this.response=response;}public boolean prepareProperty(Class<?> classType,Object obj) throws Throwable{if (obj instanceof IMFRequestAware){((IMFRequestAware) obj).setRequest(request);((IMFRequestAware) obj).setResponse(response);}Enumeration params=request.getParameterNames();while(params.hasMoreElements()){String name=(String)params.nextElement();String value=request.getParameter(name);if (MFString.NotNullOrEmpty(name) && MFReflect.IsHaveProperty(obj,name)){Class<?> type=MFReflect.GetPropertyType(obj, name);Object typedValue = MFDbTypeTransfer.toJavaType(type, value);MFReflect.SetProperty(obj, name, typedValue);}}return true;}public boolean runAction(MFActionItem item) throws Throwable{if (item!=null){Class<?> c=Class.forName(item.getClassName());Object obj=c.newInstance();prepareProperty(c,obj);String methodName =MFString.NullToString(item.getMethod(),execute);Method method=c.getDeclaredMethod(methodName, null);Object value=method.invoke(obj, null);if (value!=null){String url=item.getResults().get(value);if (MFString.NotNullOrEmpty(url)){//String path=MFString.NullToString(item.getNamespace())+url;response.sendRedirect(url);}             }}return false;}public boolean runAction(String url) throws Throwable{MFActionItem item=findAction(url);return runAction(item);}public String CheckPath(String url){if (MFString.NotNullOrEmpty(url)  && !url.startsWith(MFPath.useparator)) url=MFPath.useparator+url;return url;}public MFActionItem findAction(String url){for(MFActionItem item:items){String Str=MFString.NullToString(item.getNamespace())+item.getActionName()+ext;Str=CheckPath(Str);if (MFString.ComparerNoCase(url, Str)) {MFDebug.println("find");return item;}}return null;}public String getAttrValue(Element item,String name){Attribute attr=item.attribute(name);if (attr!=null){String text=attr.getText();return text;}return null;   }public boolean loadConfig(String filePath) throws DocumentException{File file = new File(filePath);SAXReader reader = new SAXReader();Document doc=reader.read(file);Element root = doc.getRootElement(); //load include filefor (Iterator<?> i = root.elementIterator("include"); i.hasNext();) {Element item = (Element) i.next();String value=getAttrValue(item,"file");if (MFString.NotNullOrEmpty(value)) includeFiles.add(value);   }//load constantfor (Iterator<?> i = root.elementIterator("constant"); i.hasNext();) {Element item = (Element) i.next();String conName=getAttrValue(item,"name");String conValue=getAttrValue(item,"value");if (MFString.NotNullOrEmpty(conName)&&MFString.NotNullOrEmpty(conValue) ) {configs.put(conName, conValue);}     }//load actionfor (Iterator<?> i = root.elementIterator("package"); i.hasNext();) {Element packageItem = (Element) i.next();String packageName=getAttrValue(packageItem,"name");String namespace=getAttrValue(packageItem,"namespace");for (Iterator<?> j = packageItem.elementIterator("action"); j.hasNext();) {MFActionItem action=new MFActionItem();Element actionItem = (Element) j.next();String actionName=getAttrValue(actionItem,"name");String className=getAttrValue(actionItem,"class");String method=getAttrValue(actionItem,"method");action.setPackageName(packageName);action.setNamespace(namespace);action.setActionName(actionName);action.setActionName(actionName);action.setClassName(className);action.setMethod(method);for (Iterator<?> k = actionItem.elementIterator("result"); k.hasNext();) {Element resultItem = (Element) k.next();String resultName=getAttrValue(resultItem,"name");String url=(String)resultItem.getData();action.getResults().put(resultName, url);}items.add(action);}}return true;}public void setIncludeFiles(List<String> includeFiles) {this.includeFiles = includeFiles;}public List<String> getIncludeFiles() {return includeFiles;}
}