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1
23
24 package org.mdarad.framework.util.struts;
25
26
27 import org.apache.commons.beanutils.ConvertUtils;
28 import org.apache.struts.Globals;
29 import org.apache.struts.action.Action;
30 import org.apache.struts.action.ActionForm;
31 import org.apache.struts.action.ActionForward;
32 import org.apache.struts.action.ActionMapping;
33 import org.apache.struts.action.ActionMessages;
34 import org.apache.struts.action.ActionServlet;
35 import org.apache.struts.config.ForwardConfig;
36 import org.apache.struts.config.ModuleConfig;
37 import org.apache.struts.tiles.TilesRequestProcessor;
38 import org.mdarad.framework.exception.SystemException;
39
40 import javax.servlet.ServletException  ;
41 import javax.servlet.http.HttpServletRequest ;
42 import javax.servlet.http.HttpServletResponse ;
43 import java.io.IOException ;
44 import java.io.UnsupportedEncodingException ;
45 import java.net.URI ;
46 import java.util.Currency ;
47 import java.util.Locale ;
48
49 public abstract class AbstractRequestProcessor extends org.apache.struts.action.SecureTilesRequestProcessor {
50 private final static String EXCEPTION_KEY = "org.mdarad.framework.util.struts.AbstractRequestProcessor.EXCEPTION_KEY";
51 private final static String ACTION_KEY = "org.mdarad.framework.util.struts.AbstractRequestProcessor.ACTION_KEY";
52
53
56 protected ActionForward processActionPerform(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Action action, ActionForm actionForm, ActionMapping actionMapping) throws IOException , ServletException {
57 StrutsChainedException exception = (StrutsChainedException) httpServletRequest.getAttribute(EXCEPTION_KEY);
58 if (exception != null) {
59 return processException(httpServletRequest, httpServletResponse, (Exception ) exception.getThrowable(0), actionForm, actionMapping);
60 }
61 return super.processActionPerform(httpServletRequest, httpServletResponse, action, actionForm, actionMapping);
62 }
63
64 protected ActionForward processException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Exception e, ActionForm actionForm, ActionMapping actionMapping) throws IOException , ServletException {
65 e.printStackTrace(System.err);
66 return super.processException(httpServletRequest, httpServletResponse, e, actionForm, actionMapping); }
68
69
70 public void init(ActionServlet servlet, ModuleConfig moduleConfig) throws ServletException {
71 StrutsConverter strutsConverter = new StrutsConverter();
72 ConvertUtils.register(strutsConverter, Locale .class);
73 ConvertUtils.register(strutsConverter, Currency .class);
74 ConvertUtils.register(strutsConverter, URI .class);
75 ConvertUtils.register(strutsConverter, Integer .class);
76 super.init(servlet, moduleConfig);
77 }
78
79 static public void chainException(HttpServletRequest httpServletRequest, Throwable throwable) {
80 StrutsChainedException exception = (StrutsChainedException) httpServletRequest.getAttribute(EXCEPTION_KEY);
81 if (exception == null) exception = new StrutsChainedException();
82 exception.chain(throwable);
83 httpServletRequest.setAttribute(EXCEPTION_KEY, exception);
84 }
85
86 protected Action processActionCreate(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ActionMapping actionMapping) throws IOException {
87 Action action = (Action) httpServletRequest.getAttribute(ACTION_KEY);
88 if (action == null) action = super.processActionCreate(httpServletRequest, httpServletResponse, actionMapping);
89 return action;
90 }
91
92 protected void processLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
93 try {
94 httpServletRequest.setCharacterEncoding("UTF-8");
95 } catch (UnsupportedEncodingException e) {
96 throw new RuntimeException (e);
97 }
98 super.processLocale(httpServletRequest, httpServletResponse);
99 }
100
101 protected boolean processRoles(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ActionMapping actionMapping) throws IOException , ServletException {
102 return true;
103 }
104
105 protected abstract boolean processAuthenticationRoles(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ActionForm actionForm, ActionMapping actionMapping) throws IOException , ServletException ;
106
107 protected boolean processLocalization(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ActionForm actionForm, ActionMapping actionMapping) throws IOException , ServletException {
108 try {
109 StrutsLocalizationUtils.processLocale(httpServletRequest, "org.mdarad.framework.util.struts.AbstractAction.webLocalizationContext");
110 } catch (Exception e) {
111 processForwardConfig(httpServletRequest, httpServletResponse, processException(httpServletRequest, httpServletResponse, e, actionForm, actionMapping));
112 return false;
113 }
114 return true;
115 }
116
117 protected boolean processInvalidForm(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ActionForm actionForm, ActionMapping actionMapping) throws IOException , ServletException {
118 Action action = super.processActionCreate(httpServletRequest, httpServletResponse, actionMapping);
119 httpServletRequest.setAttribute(ACTION_KEY, action);
120
121 if (action instanceof InvalidFormRequestPopulator) {
122 InvalidFormRequestPopulator requestPopulatorAction = (InvalidFormRequestPopulator) action;
123 try {
124 requestPopulatorAction.populateRequestOnInvalidForm(httpServletRequest, actionForm);
125 } catch (SystemException e) {
126 processForwardConfig(httpServletRequest, httpServletResponse, processException(httpServletRequest, httpServletResponse, e, actionForm, actionMapping));
127 return false;
128 }
129 }
130 return true;
131 }
132
133 protected boolean processValidate(HttpServletRequest request, HttpServletResponse response, ActionForm form, ActionMapping mapping) throws IOException , ServletException {
134 if (!processLocalization(request, response, form, mapping)) {
135 return false;
136 }
137 if (!processAuthenticationRoles(request, response, form, mapping)) {
138 return false;
139 }
140
141 if (form == null) {
142 return (true);
143 }
144
145 if (request.getAttribute(Globals.CANCEL_KEY) != null) {
147 return (true);
148 }
149
150 if (!mapping.getValidate()) {
152 return (true);
153 }
154
155 ActionMessages errors = form.validate(mapping, request);
157 if ((errors == null) || errors.isEmpty()) {
158 return (true);
159 } else {
160 if (!processInvalidForm(request, response, form, mapping)) {
161 return false;
162 }
163 }
164
165 if (form.getMultipartRequestHandler() != null) {
167 form.getMultipartRequestHandler().rollback();
168 }
169
170 String input = mapping.getInput();
172 if (input == null) {
173 response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
174 getInternal().getMessage("noInput",
175 mapping.getPath()));
176 return (false);
177 }
178
179 request.setAttribute(Globals.ERROR_KEY, errors);
181
182 if (moduleConfig.getControllerConfig().getInputForward()) {
183 ForwardConfig forward = mapping.findForward(input);
184 processForwardConfig(request, response, forward);
185 } else {
186 internalModuleRelativeForward(input, request, response);
187 }
188
189 return (false);
190 }
191 } |
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