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1
15
16 package com.jdon.strutsutil;
17
18 import org.apache.struts.action.ActionMapping;
19 import org.apache.struts.action.ActionForm;
20 import org.apache.struts.action.ActionErrors;
21 import javax.servlet.http.HttpServletRequest  ;
22
23 import javax.servlet.http.HttpSession ;
24 import com.jdon.controller.events.EventModel;
25 import org.apache.commons.beanutils.PropertyUtils;
26 import com.jdon.util.Debug;
27 import com.jdon.controller.events.EventSupport;
28 import java.security.Principal ;
29 import com.jdon.controller.model.ModelIF;
30 import com.jdon.model.ModelForm;
31 import org.apache.struts.config.ModuleConfig;
32 import org.apache.struts.config.FormBeanConfig;
33 import org.apache.struts.util.ModuleUtils;
34 import org.apache.struts.action.ActionMessages;
35 import org.apache.struts.action.ActionMessage;
36
37
45 public final class FormBeanUtil {
46
47 public final static String module = FormBeanUtil.class.getName();
48
49 private final static ModuleUtils moduleUtils = ModuleUtils.getInstance();
50
51 public final static String FORWARD_SUCCESS_NAME = "success";
52
53 public final static String FORWARD_FAILURE_NAME = "failure";
54
55
61 public static void saveActionForm(ActionForm form, ActionMapping mapping,
62 HttpServletRequest request) {
63 if ((form != null) && (mapping.getAttribute() != null)) {
64 if ("request".equals(mapping.getScope())) {
65 request.setAttribute(mapping.getAttribute(), form);
66 } else {
67 HttpSession session = request.getSession();
68 session.setAttribute(mapping.getAttribute(), form);
69 request.setAttribute(mapping.getAttribute(), form);
70 }
71 }
72 }
73
74
80 public static ActionForm loadActionForm(ActionMapping mapping,
81 HttpServletRequest request) {
82 if ("request".equals(mapping.getScope())) {
83 return (ActionForm) request.getAttribute(mapping.getAttribute());
84 } else {
85 HttpSession session = request.getSession();
86 return (ActionForm) session.getAttribute(mapping.getAttribute());
87 }
88 }
89
90
95 public static ActionForm lookupActionForm(HttpServletRequest request,
96 String formName) {
97 ActionForm actionForm = null;
98 actionForm = (ActionForm) request.getAttribute(formName);
99 if (actionForm == null) {
100 HttpSession session = request.getSession();
101 actionForm = (ActionForm) session.getAttribute(formName);
102 }
103 return actionForm;
104 }
105
106
111 public static void removeActionForm(ActionMapping mapping,
112 HttpServletRequest request) {
113 if (mapping.getAttribute() != null) {
114 if ("request".equals(mapping.getScope()))
115 request.removeAttribute(mapping.getAttribute());
116 else {
117 HttpSession session = request.getSession();
118 session.removeAttribute(mapping.getAttribute());
119 request.removeAttribute(mapping.getAttribute());
120 }
121 }
122 }
123
124 public static String getFormName(ActionMapping mapping) throws Exception {
125 String formName = "NoFormName Error!";
126 if (mapping.getName() != null)
127 formName = mapping.getName();
128 else if ((mapping.getAttribute() != null))
129 formName = mapping.getAttribute();
130 else
131 throw new Exception ("not found the actionForm name in action configure");
132 return formName;
133 }
134
135 public static ModelForm getModelForm(ActionMapping actionMapping,
136 ActionForm actionForm, HttpServletRequest request) throws Exception {
137
138 if (actionForm == null) {
139 String msg = " not found the actionForm name in action configure";
140 Debug.logError(msg);
141 throw new Exception (msg);
142 }
144
145 ModelForm modelForm = null;
146 try {
147 modelForm = (ModelForm) actionForm;
148 } catch (ClassCastException e) {
149 String msg = "your class:" + actionForm.getClass().getName()
150 + " isn't the subclass of com.jdon.model.ModelForm";
151 Debug.logVerbose(msg, module);
152 throw new Exception (msg);
153 }
154
155 return modelForm;
156 }
157
158
167 private static ModelForm createModelFormNow(ActionMapping actionMapping,
168 ActionForm actionForm, HttpServletRequest request) throws Exception {
169
170 Debug.logVerbose(
171 "[JdonFramework] not found a existed ModelForm, create it now",
172 module);
173 ModuleConfig moduleConfig = moduleUtils.getModuleConfig(request,
174 request.getSession().getServletContext());
175 ModelForm form = null;
176 String formName = null;
177 String formClass = null;
178 try {
179 formName = getFormName(actionMapping);
180 FormBeanConfig formConfig = moduleConfig.findFormBeanConfig(formName);
181 if (formConfig == null) {
182 throw new Exception (" not found config for " + formName);
183 }
184 formClass = formConfig.getType();
185
186 ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
187 form = (ModelForm) classLoader.loadClass(formClass).newInstance();
188
189 String action = request.getParameter("action");
190 if (action == null)
191 action = request.getParameter("method");
192 form.setAction(action);
193
194 request.setAttribute(formName, form);
195 } catch (Exception ex) {
196 Debug.logError("[JdonFramework] formName:" + formName
197 + "formClass create error :" + formClass + ex, module);
198 }
199 return form;
200 }
201
202 public static boolean validateAction(String actionName,
203 ActionMapping mapping) {
204 boolean res = true;
205 int result = actionTransfer(actionName); if (result == 0)
207 res = false;
208
209 if (mapping.findForward(actionName) == null) res = false;
211
212 return res;
213
214 }
215
216 public static String getName(HttpServletRequest request) throws Exception {
217 Principal principal = request.getUserPrincipal();
218 if (principal == null) {
219 Debug.logError("[JdonFramework] No Principal", module);
220 throw new Exception (" No Principal");
221 }
222 return principal.getName();
223 }
224
225 public static ActionErrors notNull(Object object, String errorsInfo) {
226 ActionErrors errors = new ActionErrors();
227 String Id = (String ) object;
228 if (object == null) {
229 errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
230 errorsInfo));
231 }
232 return errors;
233 }
234
235
239 public static EventModel createEvent(ModelForm form, ModelIF model)
240 throws Exception {
241 EventModel em = new EventModel();
242 try {
243 PropertyUtils.copyProperties(model, form);
244 em.setModelIF(model);
245 String action = form.getAction();
246 em.setActionName(action);
247 em.setActionType(FormBeanUtil.actionTransfer(action));
248 } catch (Exception ex) {
249 Debug.logError("[JdonFramework]create Event error:" + ex, module);
250 throw new Exception (ex);
251 }
252 return em;
253 }
254
255 public static int actionTransfer(String actionName) {
256 if (actionName.equalsIgnoreCase(ModelForm.CREATE_STR))
257 return EventSupport.CREATE;
258 else if (actionName.equalsIgnoreCase(ModelForm.EDIT_STR))
259 return EventSupport.EDIT;
260 else if (actionName.equalsIgnoreCase(ModelForm.UPDATE_STR))
261 return EventSupport.EDIT;
262 else if (actionName.equalsIgnoreCase(ModelForm.DELETE_STR))
263 return EventSupport.DELETE;
264 else
265 return 0;
266 }
267
268 }
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