Struts2 Default configuration
1, global View jump configuration, configuration of the default values
This is configured in CONFIG.
<!-- 配置全局跳转视图 --> <global-results> <result name="success">/index.jsp</result> </global-results>
<!--Configure each of the default values -- <!--name only configures the access path name class by default the action that is executed in Struts-default has the configuration <default-c Lass-ref class= "Com.opensymphony.xwork2.ActionSupport"/> method defaults to execute default methods execute return value is Su ccess, the corresponding page to go to the global view to find. - <action name="Test"></Action> <!--What happens when class is not configured? That is processed Aciton-- <!--answer: When you just need to jump to web-inf resources. - <action name="Test2"> <result name="Success" type="redirect">/web-inf/index.jsp</result> </Action>2, structs2 the centralized way of data processing
1) Get Servletapi directly
2) through the Actioncontext class
3) How to implement the interface
Public class dataaction_bak extends actionsupport{ @Override PublicStringExecute()throwsException {//1. Request data encapsulation; 2. Call service to process business logic and get result data //3. Data is saved to the domain /* *//data manipulation in struts, Mode 1: Get Servletapi directly, perform operation HttpServletRequest request = Servletactioncontex T.getrequest (); HttpSession session = Request.getsession (); ServletContext application = Servletactioncontext.getservletcontext (); Operation Request.setattribute ("Request_data", "request_data1"); Session.setattribute ("Session_data", "session_data1"); Application.setattribute ("Application_data", "application_data1"); */ //"Recommended: decoupled way to manipulate data" //Struts in data manipulation, Mode 2: Through the Actioncontext classActioncontext AC = Actioncontext.getcontext ();//Get struts to encapsulate the HttpServletRequest object as a map //Get a map representing the request objectmap<string,object> request = Ac.getcontextmap ();//Get a map representing the session objectMap<string, object> session = Ac.getsession ();//Get a map representing the ServletContext objectmap<string, object> application = Ac.getapplication ();//DataRequest.put ("Request_data","Request_data1_actioncontext"); Session.put ("Session_data","Session_data1_actioncontext"); Application.put ("Application_data","Application_data1_actioncontext");returnSUCCESS; }/** * Data processing, Mode 3: Ways to Implement Interfaces * */ Public class dataaction extends actionsupport implements Requestaware, sessionaware, applicationaware{ PrivateMap<string, object> request;PrivateMap<string, object> session;PrivateMap<string, object> Application;//When struts runs, it injects the map object representing the request @Override Public void setrequest(map<string, object> request) { This. request = Request; }//Inject session @Override Public void setsession(Map<string, object> session) { This. session = Session; }//Injection application @Override Public void setapplication(map<string, object> application) { This. application = Application; }@Override PublicStringExecute()throwsException {//DataRequest.put ("Request_data","Request_data1_actionaware"); Session.put ("Session_data","Session_data1_actionaware"); Application.put ("Application_data","Application_data1_actionaware");// returnSUCCESS; }}3. Request Data Encapsulation
regist.jsp
<body> <form Action="${pagecontext.request.contextpath}/user_register.action" Method="POST">User name:<input type="text" name="User.Name"><br/>Password:<input type="text" name="User.pwd"><br/>Age:<input type="text" name="User.age"><br/>Birthday:<input type="text" name="User.birth"><br/> <input type="Submit" value="register"> </form> </body>User
Public classUser {//Encapsulate Request data PrivateString name;//must give Set/get can not give PrivateString pwd;Private intAgePrivateDate birth; Public void SetName(String name) { This. name = name; } Public void setpwd(String pwd) { This. pwd = pwd; } Public void Setage(intAge) { This. Age = Age; } Public void Setbirth(Date birth) { This. Birth = Birth; } PublicStringGetName() {returnName } PublicStringgetpwd() {returnPwd } Public int Getage() {returnAge } PublicDateGetbirth() {returnBirth }}Useraction
/** * Struts core business: Request data Auto-encapsulation and type conversion * */ Public class useraction { //object type, be sure to give the Get method PrivateUser user; Public void SetUser(User user) { This. user = user; } PublicUserGetUser() {returnUser }//Processing registration requests PublicStringRegister() {System.out.println (User.getname ()); System.out.println (User.getpwd ()); System.out.println (User.getage ()); System.out.println (User.getbirth ());return "Success"; }}4. Structs2 Date Converter
The date is supported by default only YYYY-MM–DD
Converter class
/** * Custom type converter class * */ Public class myconverter extends strutstypeconverter { //New requirement: Requires the format to be supported in the project, such as: yyyy-mm-dd/yyyymmdd/yyyy MM month DD Day . //define the format of the transformations supported in the projectDateformat[] df = {NewSimpleDateFormat ("Yyyy-mm-dd"),NewSimpleDateFormat ("YyyyMMdd"),NewSimpleDateFormat ("yyyy year mm DD Day") };/** * Converts a string to the specified type "string to Date" * @param Context * Current context * @pa Ram Values * The value of the string submitted by the JSP form * @param Toclass * The target type to be converted to */ @Override PublicObjectconvertfromstring(Map context, string[] values, Class toclass) {//Judgment: Content cannot be empty if(Values = =NULL|| Values.length = =0) {return NULL; }//Judgment type must be date if(Date.class! = Toclass) {return NULL; }//Iteration: Conversion failed to continue the conversion of the next format; the conversion succeeds and returns directly for(intI=0; i<df.length; i++) {Try{returnDf[i].parse (values[0]); }Catch(ParseException e) {Continue; } }return NULL; }@Override PublicStringconverttostring(Map context, Object O) {return NULL; }}Local
Global
3. Struts2 default configuration, centralized mode of data processing, request data encapsulation, date converter
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