Thursday, September 18, 2014

Tài liệu cơ bản về XML (sưu tầm)

Đây là một tài liệu rất cơ bản và chi tiết về XML

Can ban - xml

(sưu tầm từ nguồn Internet)

Thursday, September 11, 2014

JSF and Strut questions and anwsers

Struts was first developed
1. in an online exchange between several open source developers
2. over a long holiday weekend(TRUE)
3. as a commercial package

The reset method on an ActionForm
1. Sets all properties to their initial value
2. Sets all properties to null
3. Repopulates all properties from the request parameters
4. None of the above(TRUE)

Each Struts Action element is uniquely identified by its
1. Input attribute
2. Name attribute
3. Page attribute
4. Path attribute(TRUE)

The name of the Application Resources file is set by the servlet init-param named
1. Application(TRUE)
2. Resources
3. ApplicationResources
4. messages

The validating init-param of the ActionServlet is used to
1. Bypass calls to the ActionForm validate method
2. Bypass validation of the Struts configuration file(TRUE)
3. Generate an error message if an unknown message key is used

To specify an ActionMapping to use when a request doesn't match any other mapping, you can
1. Use an asterisk for the path property
2. Set the "default" property of the mapping to "true"
3. Set the "unknown" property of the mapping to "true"(TRUE)
4. Set the "missing" init-param of the ActionServlet to the mapping's path

In Struts 1.1, you can change how Struts populates a form by
1. Overriding the populate method of the ActionForm
2. Overriding the processPopulate method of the Request Processor(TRUE)
3. Overriding the populateBean method of the ActionMapping

The < bean:write > tag is:
1. Always converts HTML markup to entity equivalents, like <
2. Never converts HTML markup to entity equivalents
3. Converts markup when filter=true(TRUE)
4. Converts markup when markup=false

From a MVC perspective, Struts provides the
1. Model
2. View
3. Controller(TRUE)

Struts Framework is well suited for application of ____ size.
1. Small
2. Any(TRUE)
3. Average
4. Very small

MVC is :
1. Mode-View-Controller
2. Model-View-Converter
3. Model-Viewer-Controller
4. Model-View-Controller(TRUE)

What is Action Class ?
1. The Action Class is a wrapper around the business logic and is a part of Model(TRUE)
2. Nothing special about the Action class
3. Action Class is a wrapper around the Internet logic
4. None of the above

An ActionForm is a JavaBean which extends the:
1. struts.action.ActionForm(TRUE)
2. apache.struts.action.ActionForm
3. action.ActionForm
4. ActionForm

Use the following command (tag) to display the error on the jsp page:
1. < html:errors/ >
2. < html:errors/ >(TRUE)
3. < errors / >
4. < html=errors/ >

What of following features can _not_ be configured in the JSF configuration file?
1. Navigation rules
2. Managed Beans
3. Custom components
4. Application Name(TRUE)

In JSF - Which tag must enclose all other tags on a Faces JSP page?
1. < f:faces >
2. < f:view >(TRUE)
3. < h:jsf >
4. < h:view >

In JSF - Why does the HtmlForm component render a <hidden> field?
1. Command events
2. Submit events
3. Action events(TRUE)
4. Click events

In JSF - Why does the HtmlForm component render a < hidden > field
1. To keep track of its identifier
2. To keep track of the components in tree
3. To set its submitted property(TRUE)
4. For JavaScript integration

What are the main features of JSF ? ( Choose many )
1. Page navigation specification(TRUE)
2. Standard user interface components like input fields, buttons, and links(TRUE)
3. Read xml file
4. Easy error handling(TRUE)

In JSF - Components can be nested within another component
1. True(TRUE)
2. False

Next 20 -->

Which one of the following tags renders a single radio button?
1. <h:selectBooleanCheckbox>
2. <h:selectOneRadio>
3. <h:selectOneCheckbox>
4. <h:selectManyCheckbox>

The tag library that allows you to keep common content in a Web application, at a common location and insert it where necessary is
1. HTML tag library
2. Logic tag library
3. Bean tag library
4. Template tag library

The tag used to create an input field that is not visible to the user is _______________.
1. <h:inputSecret>
2. <h:inputHidden>
3. <h:inputPassword>
4. <h:inputText>

______________ class is used to uniquely represent a locale of a country.
1. faces.render.Locale
2. util.Locale
3. faces.context.Locale

Creating and using a custom converter requires implementing _____________ and _____________ methods provided by Converter interface.
1. getObject()
2. getAsObject()
3. getAsString()
4. getString()

It is possible to have more than one Faces configuration file.
1. True
2. False

________ classplays the role of the controller and is responsible for handling all the requests.
1. Action
2. ActionServlet
3. RequestProcessor
4. Plugin

The tag used to create a text box to accept a password is _______________.
1. <h:inputSecret>
2. <h:inputHidden>
3. <h:inputPassword>
4. <h:inputText>

Which of the following UI Component acts as a container for all other components?
1. UIParameter
2. UIForm
3. UIViewRoot
4. UISelectItem

Which of the following statements are true about the reset() method of ActionForm class?
1. Sets all properties to their initial value
2. Sets all properties to null
3. Repopulates all properties from the request parameters
4. None of the above

_______________________ declares a set of rules that define the next view for the user based on his/her actions.
1. JSF Navigation Model
2. JSF View Model
3. JSF Forward Model
4. JSF Model

The file that provides a set of utility classes and interfaces that handle data structures used to store data in an application is _________.
1. commons-beanutils.jar
2. commons-collections.jar
3. commons-digester.jar
4. commons-logging.jar

Which method of ActionServlet class maps the servlet name to a URL in the Web application?
1. init()
2. save()
3. addmapping()
4. addServletMapping()

The JSF tag used to show all the error messages in a JSP page is ____________.
1. <h:message>
2. <h:messages>
3. <f:messages>
4. <f:message>

Which one of the following JSF expressions, references an application's context path?
1. #{contextPath}
2. #{requestContextPath}
3. #{facesContext.externalContext.requestContextPath}
4. ${request.contextPath}

Each Struts Action element is uniquely identified by its __________.
1. Input attribute
2. Name attribute
3. Path attribute
4. Page attribute

Which one of the following events is generated by the <h:commandButton> tag of JSF ?
1. Command event
2. Submit event
3. Action event
4. Click event

Which one of the following Action classes provides a mechanism for switching between modules in a modularized Struts application?
1. SwitchAction
2. DispatchAction
3. IncludeAction
4. LocaleAction

The Struts class which handles the actual execution of the request is ________.
1. ActionForward
2. Action
3. RequestProcessor
4. ActionServlet

The Struts tag used to display the error in the JSP page is ______________.
1. <html:errors/>
2. <html:errors>
3. <errors>
4. <html=errors>

Next 13 (sun)

Struts was first developed
1. in an online exchange between several open source developers
2. over a long holiday weekend
3. as a commercial package

The reset method on an ActionForm
1. Sets all properties to their initial value
2. Sets all properties to null
3. Repopulates all properties from the request parameters
4. None of the above (do nothing)

Each Struts Action element is uniquely identified by its
1. Input attribute
2. Name attribute
3. Page attribute
4. Path attribute

The name of the Application Resources file is set by the servlet init-param named
1. application
2. resources
3. ApplicationResources
4. messages

The validating init-param of the ActionServlet is used to
1. Bypass calls to the ActionForm validate method
2. Bypass validation of the Struts configuration file
3. Generate an error message if an unknown message key is used

To specify an ActionMapping to use when a request doesn't match any other mapping, you can
1. Use an asterisk for the path property
2. Set the "default" property of the mapping to "true"
3. Set the "unknown" property of the mapping to "true"
4. Set the "missing" init-param of the ActionServlet to the mapping's path

If you have created a custom ActionMapping subclass with the property "service", you can initialize the value to "selectRecord" using
1. <init-property name="service" value="selectRecord"/>
2. <set-property property="service" value="selectRecord"/>
3. <put-field key="service" content="selectRecord"/>

In Struts 1.1, you can change how Struts populates a form by
1. Overriding the populate method of the ActionForm
2. Overriding the processPopulate method of the Request Processor
3. Overriding the populateBean method of the ActionMapping

The <bean:write> tag is:
1. Always converts HTML markup to entity equivalents, like <
2. Never converts HTML markup to entity equivalents
3. Converts markup when filter=true
4. Converts markup when markup=false

To prevent possible security issues with the <html:password> tag, you should
1. Call the reset method if validation fails
2. Set the tag's redisplay property to false
3. Set the tag's reset property to false
4. Use a plain html tag instead

To localize Tiles, you can
1. Create separate configuration files for each locale
2. Specify an locale for a definition
3. Either A or B

To localize Validator forms, you can
1. Create separate configuration files for each locale
2. Specify a locale for a form-set
3. Either A or B

From a MVC perspective, Struts provides the
1. Model
2. View
3. Controller

Next 20 -->> 20 question_3

Tuesday, September 9, 2014

Friday, September 5, 2014

Bài thực hành strut 1x

Strut2 --> tổng quan

LAB 02 Strut - Dynamic Form Internationalization --> lab

LAB 02 Strut --> lab

lab02_List_add --> lab

Strut_Client_Side_validation --> lab

Mã nguồn ===> ở đây

Video hướng dẫn ===> ở đây

Hướng dẫn sử dụng SVN + netbean quản lý mã nguồn chung

[youtube=http://youtu.be/O4Ct7NAi-q0]

Thursday, September 4, 2014

Basic exercise:

Using Strut 2 to develop login application.

If login fail

If login successful

1. Create Java web application base on Strut2 framework as figure below.

2. Create some file as structure

3. Open struts.xml and modify as

4. Open appResources: create some keys

5. Open Login class and add new code as

6. Generate getter/setter for two field above

7. Next, design login page

8. Next, index.jsp page

9. Next, error.jsp page

10. Now, deploy and run login.jsp page

Strut2-Validation

Using Strut validate input data

If input data invalid

If input data is valid

1. Design customer.jsp as

2. Add some new key to appResources

3. Assign Customer action in struts.xml

4. Add new class with name “Customer” into codes package

5. Generate setter and getter for 4 fields

6. Add new file “Customer-validation.xml” into package

Now, re-deploy and run

Using annotations

All action class must be inside actions package

Strut Controller now change to org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

 1 <filter>
 2 <filter-name>struts2</filter-name>
 3 <filter-class>
 4 org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter 
 5 </filter-class>
 6 <init-param>
 7 <param-name>actionPackages</param-name>
 8 <param-value>codes</param-value>
 9 </init-param>
10 </filter>
11 <filter-mapping>
12 <filter-name>struts2</filter-name>
13 <url-pattern>/*</url-pattern>
14 </filter-mapping>

If your Action extend from ActionSupport, then your Action class name has no rule required.

Ex: Login action beloved

Otherwise, action class name must end with Action string

Ex: account action

 1 @Namespace("/")
 2 @ResultPath(value = "/")
 3 @Results({
 4   @Result(name = "success", location = "index.jsp"),
 5   @Result(name = "error", location = "error.jsp")}
 6 )
 7 public class accountAction {
 8   @Action(value="account")
 9   public String execute() throws Exception {
10     if ("nvmit".equals(getName())) {
11       return SUCCESS;
12     } else {
13       return ERROR;
14     }
15   }
16 private String name ="";
17   public String getName() {
18     return name;
19   }
20   public void setName(String name) {
21     this.name = name;
22   }
23 }

@Namespace Annotation in Struts 2

@Namespace is used at class level or package level. This helps to change the namespace for action class. While accessing or calling action class, it hides package structure. When namespace is applied at package level, all the action of that package gets that namespace as default.

 1 @Results({
 2         @Result(name = "SUCCESS", location = "/user/index.jsp"),
 3         @Result(name = "ERROR", location = "/user/error.jsp")
 4 })
 5 @Namespaces(
 6     @Namespace("/user")
 7 )
 8 public class Login extends ActionSupport{
 9     @Action(value = "/user/login")
10     public String execute() throws Exception {
11         if ("nvmit".equals(getName()) && "nvmit".equals(getPwd())) {
12             return "SUCCESS";
13         } else {
14             return "ERROR";
15         }
16     }
17 
18     //Java Bean to hold the form parameters
19     private String name;
20     private String pwd;
21 
22     public String getName() {
23         return name;
24     }
25 
26     public void setName(String name) {
27         this.name = name;
28     }
29 
30     public String getPwd() {
31         return pwd;
32     }
33 
34     public void setPwd(String pwd) {
35         this.pwd = pwd;
36     }
37 }
38

The above class can be accessed by @Namespace + @Action that is /user/form
http://localhost:8080/Struts2Demo-1/user/form

Create Project with beloved structure

Project Structure

user/login.jsp

 1 <%@ taglib uri="/struts-tags" prefix="s"%>
 2 <html>
 3     <head>
 4         <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
 5         <title>Login Page</title>
 6     </head>
 7     <body>
 8         <h3>Welcome User, please login below</h3>
 9     <s:form action="/user/login">
10         <s:textfield name="name" label="User Name"></s:textfield>
11         <s:textfield name="pwd" label="Password" type="password"></s:textfield>
12         <s:submit value="Login"></s:submit>
13     </s:form>
14 </body>
15 </html>

user/index.jsp

 1 <%@page contentType="text/html" pageEncoding="UTF-8"%>
 2 <%@taglib prefix="s" uri="/struts-tags" %>
 3 <!DOCTYPE html>
 4 <html>
 5     <head>
 6         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7         <title>JSP Page</title>
 8     </head>
 9     <body>
10         <h1>Hello <s:property value="name" /></h1>
11     </body>
12 </html>

account.jsp

 1 <%@page contentType="text/html" pageEncoding="UTF-8"%>
 2 <%@taglib prefix="s" uri="/struts-tags" %>
 3 <!DOCTYPE html>
 4 <html>
 5     <head>
 6         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7         <title>JSP Page</title>
 8     </head>
 9     <body>
10         <h1>Hello <s:property value="name" /></h1>
11     </body>
12 </html>
13

Index.jsp same above

Download source code ===> here

Wednesday, September 3, 2014

The Beautiful Design Summer 2014 Collection

http://android-developers.blogspot.com/2014/09/beautiful-design-collection-summer-2014.html

Ngo Tuong Dan