ServerBean.java Messages Bean add result messages auto populates using bean getters/setters becomes request parameter category[0].value added to form using LoggingForm.getCategory(0).setValue(value) For each one that user has changed… call business logic to change on server browser adds form variables to request results.jsp">
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Published byRoland Kelly Modified over 9 years ago
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Page 1 Controller Action2.java Struts- config. xml Mappings Business Logic Layer Data Layer View Layer Business Bean 1 Jsp Engine Jsp 1 Action3.java Action4.java Action1.java Business Bean 2 Business Bean 3 Jsp 2Jsp 3 Form Bean 1 Form Bean 2 Other Bean 1 request/session Web Browser Db Server path action [form bean] [forwards] Jsp 2 Web Server Jsp 2
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Web Server creates / reuses index.htm Controller Show Logging Action.java Mappings Business Logic Layer Data Layer View Layer Jsp Engine LoggingBean.java logging.jsp Logging Form request/session Web Browser Db Server Request: ShowLogging.do creates form bean in correct scope perform(mapping, form, request, response) calls business logic rule to get logging info returns forward(success) mainpulates data setCategoryList(list) forwards – logging.jsp expands custom tags response sent to browser – pure html looks up <action path="/ShowLogging" type="beans.ShowLoggingAction" name="LoggingForm"> <forward name="success“ path="/logging.jsp" /> ServerBean.java populates form values …. logging.jsp Messages Resources displays internationalized messages
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Web Server creates / reuses action instance logging.jsp Controller Show Logging Action.java Mappings Business Logic Layer Data Layer View Layer Jsp Engine LoggingBean.java results.jsp Logging Form request/session Web Browser Db Server form submit – action=‘SaveLogging.do’ reuses form bean in correct scope calls perform(mapping, form, request, response) getCategoryList() returns mapping.findForward("success") forwards – result.jsp expands custom tags Displays internationalized messages from bean response sent to browser – pure html looks up <action path="/SaveLogging" type="beans.SaveLoggingAction" name="LoggingForm"> <forward name="success“ path="/result.jsp" /> ServerBean.java Messages Bean add result messages auto populates using bean getters/setters becomes request parameter category[0].value added to form using LoggingForm.getCategory(0).setValue(value) For each one that user has changed… call business logic to change on server browser adds form variables to request results.jsp
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if submit, auto populates form bean from request params Page 1 Controller Action2.java Struts- config. xml Mappings Business Logic Layer Data Layer View Layer Business Bean 1 Jsp Engine Jsp 1 Action3.java Action4.java Action1.java Business Bean 2 Business Bean 3 Jsp 2Jsp 3 Form Bean 1 Form Bean 2 Other Bean 1 request/session Web Browser Business Data reads on start-up creates incoming requests creates/reuses any associated form bean path action [form bean] [forwards] passes control to relevant action to handle interacts with lower layers - acts as adaptor between HTTP and layers below gets data to display (adds to beans in request/session)…or saves data from beans via business rules looks up path to determine action/ form bean returns appropriate forward relevant page called processes custom tags – fill form elements from beans, display internationalized messages pure HTML sent to browser Jsp 2 Action2.java Form Bean 2 Web Server Jsp 2
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