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1 package jodd.servlet;
2
3 import java.io.IOException;
4 import java.lang.reflect.Method;
5
6 import javax.servlet.RequestDispatcher;
7 import javax.servlet.ServletException;
8 import javax.servlet.http.HttpServlet;
9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11
12 import jodd.util.StringUtil;
13
14
85 public abstract class ActionServlet extends HttpServlet {
86
87 public static String parameterActionName = "action";
88 public static String parameterForwardName = "forward";
89 public static String parameterRedirectName = "redirect";
90
91
92
94 ActionController controller = null;
95
96
102 public ActionController getController() {
103 return controller;
104 }
105
106
108 public final static int METHOD_UNKNOWN = 0;
109 public final static int METHOD_GET = 1;
110 public final static int METHOD_POST = 2;
111
112 private int method = METHOD_UNKNOWN;
113
114
115
120 public final int getMethod() {
121 return method;
122 }
123
124
134 protected final void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
135 method = METHOD_GET;
136 doRequest(request, response);
137 }
138
139
149 protected final void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
150 method = METHOD_POST;
151 doRequest(request, response);
152 }
153
154
164 public void doRequest(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
165 }
166
167
184 public String doAction(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
185 return null;
186 }
187
188
190
202 public String invokeAction(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
203 String actionName = request.getParameter(parameterActionName);
204 return invokeAction(request, response, actionName);
205 }
206
207
219 public String invokeAction(HttpServletRequest request, HttpServletResponse response, String actionName) throws IOException, ServletException {
220 if (actionName == null) {
221 return null;
222 }
223 try {
224 Method m = this.getClass().getMethod(actionName, new Class[] {HttpServletRequest.class, HttpServletResponse.class});
225 Object result = m.invoke(this, new Object[] {request, response});
226 return StringUtil.toString(result);
227 } catch (Exception e) {
228 }
229 return null;
230 }
231
232
233
247 public String invokeExternalAction(HttpServletRequest request, HttpServletResponse response, String actionPath) throws IOException, ServletException {
248 return controller.invokeAction(request, response, actionPath);
249 }
250
251
253
263 protected boolean forward(HttpServletRequest request, HttpServletResponse response, String url) throws IOException, ServletException {
264 RequestDispatcher dispatcher = request.getRequestDispatcher(url);
265 if (dispatcher != null) {
266 dispatcher.forward(request, response);
267 return true;
268 }
269 return false;
270 }
271
272
283 protected boolean forwardParam(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
284 return forwardParam(request, response, null);
285 }
286
287
301 protected boolean forwardParam(HttpServletRequest request, HttpServletResponse response, String s) throws IOException, ServletException {
302 String paramName = parameterForwardName;
303 if ((s != null) && (s.equals("") == false)) {
304 paramName += "-" + s;
305 }
306 String url = request.getParameter(paramName);
307 if (url != null) {
308 return forward(request, response, url);
309 }
310 return false;
311 }
312
313
315
325 protected void redirect(HttpServletRequest request, HttpServletResponse response, String url) throws IOException {
326 if (url.startsWith("/") == true) {
327 url = request.getContextPath() + url;
328 }
329 response.sendRedirect(url);
330 }
331
332
343 protected boolean redirectParam(HttpServletRequest request, HttpServletResponse response) throws IOException {
344 return redirectParam(request, response, null);
345 }
346
347
360 protected boolean redirectParam(HttpServletRequest request, HttpServletResponse response, String s) throws IOException {
361 String paramName = parameterRedirectName;
362 if ((s != null) && (s.equals("") == false)) {
363 paramName += "-" + s;
364 }
365 String url = request.getParameter(paramName);
366 if (url != null) {
367 redirect(request, response, url);
368 return true;
369 }
370 return false;
371 }
372
373
374
376
385 public String getActionParameter(HttpServletRequest request, String name) {
386 ActionData actionData = (ActionData) request.getAttribute(ActionController.ACTION_DATA);
387 return actionData.getParameter(name);
388 }
389
390
391
400 public String getActionForwardPath(HttpServletRequest request, String name) {
401 ActionData actionData = (ActionData) request.getAttribute(ActionController.ACTION_DATA);
402 return actionData.getForwardPath(name);
403 }
404
405
413 public String getActionMethodName(HttpServletRequest request) {
414 ActionData actionData = (ActionData) request.getAttribute(ActionController.ACTION_DATA);
415 return actionData.getMethod();
416 }
417
418
419
427 public String getActionType(HttpServletRequest request) {
428 ActionData actionData = (ActionData) request.getAttribute(ActionController.ACTION_DATA);
429 return actionData.getType();
430 }
431
432
441 public boolean isActionForwardRedirect(HttpServletRequest request, String name) {
442 ActionData actionData = (ActionData) request.getAttribute(ActionController.ACTION_DATA);
443 return actionData.isForwardRedirect(name);
444 }
445
446
447
455 public String getActionPath(HttpServletRequest request) {
456 return (String) request.getAttribute(ActionController.ACTION_PATH);
457 }
458
459
460 }
461 |
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